Ask HN: Who is hiring? (May 2026)

Infisical | Full-Time | Senior Fullstack Engineers | Remote, Americas

(https://infisical.com/) Secure Secrets, Certificates, and AI Agents.

Infisical is the all-in-one platform to securely manage application secrets, certificates, SSH keys, and privileged access across classic and AI infrastructure — trusted by engineering teams at LG, NVIDIA, Hugging Face, and thousands of teams worldwide.

* Apply here: https://infisical.com/careers * Email: [email protected] * LinkedIn: https://www.linkedin.com/in/austinthompson14/

Sumble is the newco from the founders of Kaggle. We are hiring full stack engineers, ai/ml engineers and growth/marketing. Can view our roles and apply here: https://sumble-inc.workable.com/ We are building a knowledge graph from web data with a first focus on data for go-to-market teams.

We use web data to identify things like org structure, tech stack, and key projects (e.g., GenAI initiatives, cloud migrations). Our product already has strong product-market fit, early revenue, and happy customers — and now we’re ready to accelerate.

Our long-term vision is to become the world's best data vendor. Try the product at sumble.com.

We are a team of 25 with experience at companies such as Google, Meta, Stack Overflow, Rippling, Snowflake, Confluent and Kaggle.

We raised $38.5MM from Coatue, Canaan, Square Peg Capital https://techcrunch.com/2025/10/22/sumble-emerges-from-stealt...

Burnin (London or NYC) | Founding Research Scientist + Founding Engineering Lead | Hybrid (Some on-site) | Full-time

We are building the trust stack for AI code generation, targeted at high-stakes computing where wrong numbers cost real money: a statically typed functional language designed for coding models, a compiler whose guarantees double as audit-grade trust infrastructure, and a coding model fine-tuned on the language with compiler fitness as the training signal. Language and model are co-designed.

Small team out of PyTorch, FAIR, and Meta. Strong institutional VC support from our pre-seed; active investor interest heading into seed.

Founding Research Scientist: own the agenda across the language and the model. Type system design, compiler analyses that produce useful fitness gradients, and fine-tuning open-weight coding models on a language with no pretraining footprint. Publish in PL and ML venues. Strongest fits cross between machine learning, programming languages, and formal methods. PhD preferred, equivalent output equally fine. Stack is Rust, Lean 4, Python.

Founding Engineering Lead: own engineering across compiler internals, language runtime, GPU backends, notebook and library tooling, and the AI infrastructure around training, evaluation, model release, and likely public inference. We already support x86 and ARM, CUDA and AMD, macOS and Linux, and the matrix grows. Real feel for statically typed functional programming expected; the kind of engineer who picks up Lean or Haskell on a weekend because they wanted to. Have led engineering before, formally or not. Stack is mostly Rust with Python where it earns its place, primarily on AWS.

Both roles: comfortable with early-stage ambiguity, define your own roadmap, defend it with evidence.

Apply: RS: https://wellfound.com/l/2Carrr Eng Lead: https://wellfound.com/l/2CewDC

Socials: YT: https://www.youtube.com/channel/UC4DLS_emqwKXO7A9qaOtxlw SS: https://burninai.substack.com/

Two Six Technologies | Technical Lead, Principal, and Senior Principal Vulnerability Researcher | Arlington, VA | ONSITE | Full Time | https://job-boards.greenhouse.io/twosixtechnologies/jobs/589... Two Six Technologies is seeking highly experienced Technical Leads, Principals, and Senior Principal Vulnerability Researchers to drive our in-depth reverse engineering and exploit development efforts. In these advanced roles, you will own the technical direction of critical projects and transition research findings into operational capabilities. We are looking for elite embedded security researchers to tackle complex challenges in firmware and hardware reverse engineering, as well as Linux/UNIX kernel development. You should have a strong track record of technical leadership or principal-level contributions, along with a preference for an active TS clearance and the ability to obtain SCI at a minimum.

If you are interested in pushing the boundaries of vulnerability research and embedded security, please apply via the link above or reach out directly to our team at [email protected].

SerpApi | https://serpapi.com | Junior to Senior Fullstack Engineer multiple positions | Customer Success Engineer | Hiring Coordinator | Python/Ruby/PHP/Js/Rust/Cotlin/C#/Crystal/Nim/Elixir Developer Advocate positions | Based in Austin, TX but remote-first structure | Full-time | ONSITE or FULLY REMOTE | $150K - 180K a year 1099 for US or local avg + 20% for outside the US

SerpApi is the leading API to scrape and parse search engine results. We provide 100+ APIs to Google, Google Maps, Google Images, Bing, Baidu, and more.

Our current stack is Ruby, Rails, MongoDB, and React.JS. We are looking for more Junior and Senior FullStack Engineers.

We have an awesome work environment: We are a remote first company (before Covid!). We do continuous integration, continuous deployments, code reviews, code pairings, profit sharing, and most of communication is async via GitHub.

We value super strongly transparency, do open books, have a public roadmap, and contribute to the EFF.

Apply at: https://serpapi.com/careers

Caribou | Toronto| Full Time | Hybrid (one day in office) | https://www.caribou.care/

Caribou helps homecare organizations attract, engage, and retain staff through data-driven recognition, rewards, and coordination tools that make the lives of patients and their caregivers better. We're a small company of ~50 people who are mostly based in the GTA.

We are building on our core product such as deploying AI-powered agentic systems that work alongside agency coordinators to handle routine coordination, outreach, and administrative workflows to improve agency operations.

We are hiring:

Senior Software Engineer: https://caribou.breezy.hr/p/66f1f5c2f30f-senior-software-eng...

Senior Analytics Engineer: https://caribou.breezy.hr/p/990e66f091e4-senior-analytics-en...

Wick | Applied AI Product Engineer | REMOTE | Contract (to hire) We're a funded, Atlanta-based audience intelligence platform — we sit between enterprise teams' raw market data (surveys, engagement, research) and their AI stack, giving models the market context they need to reason accurately. Looking for someone who lives in prompts. You'll own the AI experience end-to-end: write them, eval them, watch real users break them, make them measurably better. We have an AI architect. We don't need another one. You're either shipping production LLM features professionally, or you're running local models at home because you can't help yourself. Either works. Familiarity with RAG, evals tooling (Braintrust, Langfuse), and the major model providers matters. Domain background in market research or audience analytics is a bonus. Apply: [email protected]

MongoDB | Senior+ Developer Advocate | REMOTE (Europe + Remote, USA) | Full Time

My team is hiring for multiple openings for Senior+ Developer Advocate roles. We aren't just doing "content." My team is the technical "tip of the spear" for MongoDB’s largest global accounts.

- The Scale: You’ll be solving data architecture and performance bottlenecks at a scale very few engineers ever get to see. - The Impact: It’s incredibly rewarding to optimize systems for household-name companies and see the immediate ripple effect. - The Culture: You’ll join a tight-knit group of MongoDB experts who actually enjoy collaborating. - The Mix: This is a high-engagement role.

There are multiple open positions:

For significant travel to work face-to-face with devs, balanced with deep-dive technical work. Apply at https://www.mongodb.com/careers/jobs/7241758 (Europe)

For mostly remote, apply at https://www.mongodb.com/careers/jobs/7495485 (Europe) https://www.mongodb.com/careers/jobs/7571308 (USA)

If you have 5+ years of experience in consulting/SA/DevRel and want to bypass the recruiter screen, contact Hubert directly: https://www.linkedin.com/in/hubertnguyen/

INDATA | AI Development Associate | REMOTE (US) or San Diego | FULL-TIME | $95,000–$115,000

We're hiring a junior dev who is genuinely AI-native — your primary tool is Claude Code or Cursor, not your own typing. You'll extend our agentic AI copilot embedded in Architect AI, our portfolio-management web app: text-to-SQL over financial schemas (holdings, transactions, performance), RAG over our internal docs, action tools, deploy and operate the system on Linux + Docker.

Stack: Python/FastAPI, LangGraph, LangSmith, React/TS, SQL Server, Qdrant, Redis, Anthropic + OpenAI + Azure AI.

Required: real SQL chops, ability to read Python and judge AI-generated code, a public project we can look at where you actually used Claude Code / Cursor / Copilot to ship something. 0–2 years professional experience. Recent grads welcome. You'll report directly to the Director of PM who built the system.

Apply: https://forms.microsoft.com/Pages/ResponsePage.aspx?id=-HA4S...

(5-min pre-screen form, includes a quick SQL question — please don't skip it)

BIT Capital | Principal Engineer (Data & Platform) | Berlin, Germany | ONSITE (2 days/week) | Full-time

Looking for experienced engineers to build and scale infrastructure and data platforms for a Berlin asset management fund. We are betting big on AI to drive investment returns and build the best infrastructure to support our high alpha targets (track record >30% p.a. since inception; https://bitcap.com/en/bit-global-technology-opportunities-ai...).

You'll design large-scale data pipelines, evolve our lakehouse architecture, strengthen data quality and observability, and build infrastructure for AI/LLM workflows (agentic scaffolding, RAG, LLMOps, AI for engineering). We are looking for a hands-on technical leader, that is steering initiatives end-to-end while staying deep in implementation.

We have our roots in tech entrepreneurship (Jan Beckers), and this mindset still dominates our work culture, even as a regulated financial institution. We are a team of ~40 with a flat hierarchy, hands-on leadership, fast-paced decisions, and a little nerdy culture as people are actually passionate about their work. Stack: AWS, Databricks/Spark, Python, PostgreSQL, Agentic AI.

If the complexity of financial markets excites you as much as the complexity of distributed systems, you'll love it here. Competitive comp, relocation & visa support, stellar team.

Apply at: https://bitcap.jobs.personio.com/job/1833794

Espresso AI | Staff ML, Staff Infra, FDE | Brooklyn or San Francisco | Full time

We're using LLMs to build neural optimizers, neural scheduling systems, and neural workload tuners. (If you're ex-Google, you can think of it like Borg powered by LLMs.)

Today we use ML to make data warehouses and spark jobs more efficient. We're hiring staff ML engineers to train models that can understand how much compute a job needs, how it scales to larger machines, whether a machine can run more jobs, and so on; and staff infra engineers to take those models and deploy them on real-world production systems.

We're also looking for FDEs who can help us talk to users and run pilots. This is a pretty technical role (you need to be able to do data analysis and debug in prod) that's also user-facing - it should be a good fit for a former (or future) technical founder.

If this sounds cool, please email me: ben [at] espresso [dot] ai

Giftster | Senior Fullstack Python Developer | Minneapolis, MN (Greater Twin Cities Metro) | Local Candidates Only | Full Time | Salary 150K-190K | www.giftster.com

Yello! I'm Ian, co-founder and CTO at Giftster. Giftster is an online two-way wishlist service tailored for families and friend groups. Founded in 2008, we have over 3 million members and counting. We are looking for a Senior Fullstack Python/Django Developer to join our web dev team.

In this role, you’ll take ownership of both building and running Giftster’s core systems. This includes our backend services, web platform, and mobile API—all of which power millions of wishlist interactions.

We’re looking for someone who can contribute across the full stack and is equally comfortable shipping new features and ensuring the system operates smoothly in production. Strong experience with Python is essential and Django experience is preferred.

You’ll collaborate with product and design to refine requirements, implement new functionality, improve existing features, and resolve issues. Just as importantly, you’ll help ensure that what we ship remains stable, performant, and reliable for our users.

Core Technologies:

Python, Django, Django REST Framework, Javascript (Vue), CSS (Tailwind), HTMX, Docker, Git, Google Cloud Platform (Cloud Run, Cloud SQL, etc), Cloudflare

We are looking to add to our local team, so while work is remote, all applicants must be local to the Twin Cities MN Greater Metro area. Sorry!

Apply here:

https://www.linkedin.com/jobs/view/4405362533/

Thanks for checking us out!

Borrowell | Development Roles | Remote across Canada with office in Toronto | Full Time, Permanent, Benefits from Day 1

Borrowell pioneered free credit scores for all Canadians in 2017 and now we’re focusing on building net new products that will be the first of their kind in Canada. With more than 3 million members, Borrowell is one of the largest fintech companies in Canada. Our team is diverse, inclusive, and driven by a shared passion for making a meaningful difference in the lives of Canadians. We pride ourselves on fostering a culture of collaboration, humility, and innovation. If you’re looking to join a company that’s transforming the financial landscape and empowering Canadians to achieve their financial aspirations, we invite you to explore career opportunities at Borrowell. Together, we can help Canadians feel confident about money.

https://borrowell.com/careers

UpMetrics | Full Stack Software Engineer | Hybrid (Sacramento, CA) | Full Time | $145k-$170k

UpMetrics provides an impact reporting platform and expert services designed to help mission-driven organizations and funders leverage data to accelerate social change. By combining innovative technology with community building, we empower partners to collect insights, secure capital, and share compelling stories to achieve their goals.

We’re looking for a Full Stack Engineer to join our mission-driven team and help build the technology that powers social impact. This role is primarily remote with occasional meetups in Sacramento with our Director of Engineering.

Stack: Ruby (flexible if you know Python), JavaScript/TypeScript, Vue (or React, Svelte)

Looking for: 6+ YOE, startup experience

Check out the full job description & apply here: https://jobs.lever.co/UpMetrics/62b78791-e881-44c7-bf21-c82b...

(Applicants must be authorized to work in the United States. UpMetrics is unable to sponsor or take over sponsorship of employment visas at this time.)

Redbook Software | Staff Software Engineer | REMOTE (U.S.) | $200k-$250k

Redbook is the new software of reference for cattle feed yards. We're digitizing the $90B cattle industry, the largest in agriculture. We have built the only cloud-based product in the industry that connects field operations and financials.

Upcoming projects include integration with other #agtech software, tooling to streamline customer onboarding, integrations with hardware, integration with futures market, and much more!

We are a senior team of 5 people, we value autonomy, keep meetings low, and we're fully remote. Our engineers backgrounds include Stack Overflow, Microsoft, Atlassian, Elastic, and ngrok.

https://app.dover.com/apply/redbook-software/fa6c1d33-5de6-4...

Cloudpepper | Senior Platform / DevOps Engineer | Remote (CET overlap) or Brussels | Full-time | $150k–$180k | https://cloudpepper.io/careers/platform-engineer/

We run the platform behind 10,000+ Odoo instances and we're looking for a Senior Platform / DevOps Engineer to join us.

Stack: Symfony/PHP, Ansible, Linux, PostgreSQL, Nginx, Python.

This is a senior role that spans both sides of the platform: backend work in Symfony/PHP, and ownership of the Linux + Ansible automation underneath. You'll be the person making sure the whole thing keeps humming as we scale.

We're a small team with high ownership and very little bureaucracy — if you like shipping over slide decks, you'll fit in.

Remote is fine as long as you can overlap with CET, or you're welcome to join us in Brussels.

Full role and application: https://cloudpepper.io/careers/platform-engineer/

Fastly | Software Engineers (Senior, Staff, Principal) | REMOTE (US, UK, EU) or ONSITE | Full-time

When you look at the headers of major websites, you’ll see us. If it has to be performant, secure, scaled worldwide, and always-on, it uses Fastly.

We're a globally edge cloud platform for performance and security, emphasizing open standards, sustainable engineering, and resilience-by-design. We're hiring across compute, security, platform engineering, network and edge protocols, release engineering, network architecture, client services engineering, and more.

Rather than building walled gardens, we co-founded the Bytecode Alliance, heavily upstream our work to open standards, actively author IETF drafts, and power the global infrastructure for open-source Python, Rust, Ruby, OpenStreetMap, and much more.

* The Stack: Rust, C/C++, Go, Javascript, Typescript, WebAssembly (Wasm/WASI), Wasmtime, Cranelift, eBPF/XDP, QUIC, HTTP, TLS, TCP, Varnish/VCL, Linux kernel internals, distributed systems, professional services.

* Apply: https://www.fastly.com/about/careers

Return | REMOTE | DevOps / Platform engineer | Full-time

Return (https://return.energy) is hiring a DevOps engineer who will build and run the infrastructure behind platforms that accelerate the transition to carbon-free energy. Return's main activity is building and operating industrial-size Battery Energy Storage Systems. Our operations are located in the Netherlands, Germany, Belgium, and Spain. You will be making a measurable (country-level) impact on the transition to renewable energy. Return recently raised €300M to support its growth.

While we employ over 120 people, Return's technical team is still small (15 people). Our platform automates processes in energy storage, monitoring, market optimization, sales, project management, procurement, construction, and customer service. Behind it sits a mix of EU cloud and on-site compute at our battery sites, with strict uptime and security requirements.

During the first four years of operation, we laid the foundation for our platforms, and we are ready to scale up. This is why we are looking for an experienced DevOps engineer who can own the full picture: cloud environments, self-hosted infrastructure at our BESS sites, and the operations centers in Amsterdam and Eindhoven from which we run the fleet.

Your primary focus will be to design, automate, and operate the infrastructure that our virtual battery platform runs on. That means EU-only cloud providers for application workloads, hardened on-premise setups at our sites, and the connectivity in between. You will be the person who decides what gets deployed where, and who makes sure it stays up and stays secure.

https://jobs.polymer.co/return/39863

Kanary | Full Stack Engineer | Remote (US) | Competitive Salary + Equity | Python / React

Kanary is a personal security platform that monitors the web to identify and reduce risk based on an individual's threat model. An executive has different exposure than a gamer, and our system classifies each person's risk across 55,000+ sources. We've been building since 2020, started in campaign security, data science, and government agencies, backed by Mozilla and Y Combinator. We have 200+ organizations on the platform and are fully funded by our customers.

Attackers have never had better tools. LLMs, social media, and search surface personal data in new ways. A few prompts can launch a deepfake and impersonation campaign. Risk sources appear and disappear across social platforms, telegram chats, and private data broker platforms. Kanary exists to play the cat and mouse game for people at the speed and scale of an agentic internet.

Kanary is a combination of software workflows (crawling, scraping, automation), AI (data classification, research, code generation), and people (analysts trained to support customers and escalate). This is dynamic system and requires an interest in adversarial programming.

We’re growing our team, and seeking a multifaceted engineer (2+ years experience). Our software stack is python, javascript, react, and for LLMs, we use Anthropic, OpenAI, and experiment with model fine tuning as needed. Experience with web scraping, data pipelines, or security tooling is required.

Email [email protected] with something you've built and why it was hard.

Learn more here: https://www.kanary.com/join-the-team#senior-software-enginee...

Engineering Square | AI Engineer | Bay Area, CA | ONSITE | Full-Time

We're hiring an AI Engineer to build and ship production AI systems - not research prototypes. Startup experience is a must: we want someone who has shipped fast in a small team, owned systems end-to-end, and is comfortable with ambiguity. Big-company-only resumes won't be a fit.

You will own: - RAG pipelines and agentic workflows (end-to-end accuracy) - GPU-optimized model deployment (Trident-style architecture) - Production MLOps: distillation, fine-tuning, training orchestration - Data modeling for AI persona capabilities - The infra around it: Docker, CI/CD, logging, monitoring, observability

You should have: - 3-12 years shipping AI/ML in production (notebooks do not count) - Time at a startup or scale-up where you owned what you built - Strong Python; bonus for C++/Java/C# in performance-critical paths - Hands-on with RAG, MLOps tooling, and GPU deployment at scale

W2 full-time. Must be authorized to work in the US. No remote, no C2C.

Apply: [email protected] (subject: "AI Engineer - [Your Name]")

Gain Compliance | Sr Software Engineer | Remote (USA) | Full-time | ~$160k | https://join.gaincompliance.com

Hey this is Brian from Gain Compliance, we've had success hiring out of a hacker news thread before, so let's give it a spin again.

We are a small company that builds financial reporting tools for the insurance industry. While the domain might be foreign to most, we are having a lot of fun building modern web software with React, Python and Node running on GCP infrastructure. You'll be joining 7 other engineers split into two full stack product focused teams.

We've been around over 10 years, are profitable, and value empowering our customers to breeze through their boring compliance tasks, building great teams that focus on outcomes over features, and work place stability.

We wrote a lot more over at https://join.gaincompliance.com if you are interested.

Fathom – AI Notetaker (fathom.ai)

YC W'21, ~100 employees, growing extremely quickly

We’re the most installed app on HubSpot marketplace and our recent Fathom 3.0 launch was #1 on Product Hunt: https://www.producthunt.com/products/fathom

We’re hiring for both our Full Stack Engineer and AI team.

Our team values: Care Deeply, Seek Leverage, Share Ownership, Sustain Urgency, and Be Tenacious.

The engineering team works fully remotely (but synchronous), and our AI team is Hybrid (SF based). Multiple team offsites per year.

List of all of our open positions (including role descriptions for AI engineering roles and Full Stack Engineer) here: https://jobs.ashbyhq.com/fathom.video

* We’re very fast at reviewing applications; yours will be seen within 48 hours of submission! Please indicate that you’re coming from Hacker News.*

Hi! We're Ontix. We're building the business layer to connect siloed datasets and query them with natural language, offering insights to SMBs they couldn't get before. We're fully funded by our sibling company, and are looking for remote freelancers in the US and full-time, onsite employees in San Diego, California (if you're into that kind of thing). We're looking for experience in the following roles:

+ QA: We're looking for a QA engineer deeply familiar with the software lifecycle in the age of agentic coding. You'd have a lot of responsibility, but also the opportunity to define what solid QA looks like at Ontix.

+ Azure Cloud Engineer: We're a mostly-AWS shop, but we have a few potential customers that are deeply entrenched in the Azure ecosystem, including a migration from SharePoint to Fabric + OneLake. You'd be leading the charge on that.

+ Infosec + Automated Vulnerability Scanning: If you browse new CVEs over breakfast, we want to talk to you. There's a huge demand among our current customers for continuous vulnerability scanning, both in the codebase and on the deployed edge. We have some test platforms, but would love a more robust solution we can market.

+ Full-Stack WordPress Developer: Our sister company is a bit old school still: If you can parachute in to a PHP + Vue 2/3 + WordPress + AWS EC2 environment, we would love to pass on your number to them.

We're looking to grow quickly as our client base expands. Healthcare, vision, and 401(k) for FTEs. If you're interested in any of these roles, or would like more information in general about us, please visit https://ontix.io or email [email protected] with a few sentences describing your experience, interest, and where you're located.

CivAI | Onsite (Berkeley) | Full Time | https://civai.org/

CivAI is a non-profit that educates policymakers and the public about AI risks using live software demonstrations. As a member of technical staff, you will be responsible for conceiving of, and building end-to-end, the software demonstrations that are the core of what we do. These will explain both prosaic AI capabilities and more nascent ones that are fast approaching.

- Stack: SvelteKit, Python

- Salary: $125-200k

- https://civai.org/jobs/member-of-technical-staff

Justworks | Hybrid (Toronto, CA – 3 days in office) | Full-Time | Senior Software Engineer https://www.justworks.com

We’re helping businesses get off the ground by enabling them to focus on running their business. At JustWorks, we tackle complex HR challenges so our customers don’t have to. We’re a data-driven team that’s constantly iterating and improving, and we care deeply about building meaningful products.

If you’re excited about working in a supportive, entrepreneurial environment and want to have fun while building something impactful, we’d love to hear from you.

Apply here: https://job-boards.greenhouse.io/justworks/jobs/7721539?gh_j...

Feel free to DM me if you have any questions about the role or the company, happy to chat!

EaseCloud | Remote (EST overlap) | Full-Time | Platform & Data Engineers | https://www.easecloud.io

EaseCloud builds cloud platforms and modern data stacks for companies scaling on Kubernetes and Snowflake.

We’re hiring engineers who like working across infra + data and actually running what they build in production.

Open Roles:

++ Platform Engineer (Python, GCP & Azure) [Kubernetes, Terraform, Python, GCP, Azure, CI/CD]

++ Platform / Data Engineer [Airbyte, Snowflake, dbt, Metabase, Python]

What you’ll do:

- Own systems end-to-end (design → deploy → operate) - Build and scale multi-cloud platforms - Run production data pipelines and analytics stacks - Work directly with founders and engineering teams

We’re a small team, high ownership, no unnecessary process. You ship, you own it.

Remote-first (EST overlap helps).

Apply: [email protected] or visit https://www.easecloud.io/careers

Mention you saw this on HN.

Smarkets (https://www.smarkets.com) | Full Time | Hybrid - Onsite (London, UK)

Smarkets runs one of the world’s most sophisticated prediction markets, handling over £29 billion in volume since 2010 and engaging 200,000+ traders globally. We’re a technology company that happens to revolutionise betting - from sports to political markets, to delivering the sharpest prices and the fairest odds.

We are currently looking for:

Software Engineers - Backend, Python, Rust - https://smarkets.com/job/aaaf901f-77c0-4b35-9240-ed4cfa668ba...

Staff Engineer - https://smarkets.com/job/134306ca-60bb-478f-9b6c-4844009a908...

Engineering Team Lead/Manager - https://smarkets.com/job/59c8a1d1-25b6-4350-840c-9eb370d1433...

Dev Ops Engineer - https://smarkets.com/job/99823479-fd3a-4720-8090-455394fb63f...

Senior Cloud Infrastructure Engineer - https://smarkets.com/job/7ee3a731-acc0-448f-bc61-64429e2ebf9...

Senior Data Engineer - https://smarkets.com/job/1c6dd7d6-b742-43cf-aa42-772ff392108...

Karma (pre-seed) | Senior Backend / Full-Stack Engineer (Founding Team) | London, UK | ONSITE (3-5 days London) | £75-100k base + meaningful equity | [email protected]

We're a small London team, 2+ years in, building a real-time consumer platform powered by AI in a category that doesn't exist yet, going after a problem worth solving. Free for users, brand-funded on the commercial side. Working iOS prototype, validated UX, advisory board across enterprise tech and behavioural science, alpha launches lined up for later in 2026.

The founding tech team is already in place across iOS, Flutter, AI/ML, and product design, with backgrounds across agentic AI, consumer fintech, and mobile at scale. The seat we're hiring for is the founding backend / full-stack engineer who'll own the architecture. APIs, data layer, real-time systems, cloud infrastructure. You'll design it from scratch alongside the rest of the team, built for consumer scale from day one.

What we're looking for:

- Built and scaled backends for consumer products under real load. Social, marketplace, or community experience a strong plus.

- Fluent in Python, Go, Node, or similar. Strong opinions on API design, microservices, and data modelling.

- Comfortable with event-driven architectures, real-time systems, and AWS or GCP at production scale.

- Bonus: ad-serving infrastructure, partner APIs, rewards/loyalty systems.

- UK-based already (no net-new visa sponsorship for this role), with us in our London office most days. We're a small team that works best in the room together.

We're vague on the concept for stealth reasons. Happy to take you through our prototype on a call.

Email [email protected] and mention Hacker News in your note. I'll come back quickly.

Baton | San Francisco, CA (Hybrid) and Remote | Full-Time

Baton (baton.io) is Ryder's in-house product development group focused on harnessing emerging technologies to redefine transportation and logistics. With $10B in freight under management, our technology reaches every part of the U.S. economy.

We design and ship category-defining software that enables Ryder and its 50,000+ customers—including some of the world's most well-known brands—to plan and execute freight intelligently, efficiently, and cost-effectively. Our work includes everything from customer-facing software to the data platform that will power the next era of innovation at Ryder.

Baton's mission: enable supply chain on autopilot.

Ryder acquired Baton in 2022 to power its next wave of digital products. We operate at startup speed, with Fortune 500 reach. If you have a passion for solving complex problems and creating impact for the engine of the American economy, you'll love it here.

Current openings at Baton:

* Senior Software Engineer - Full Stack, Technical Lead (hybrid, $200,000 - $250,000): https://grnh.se/wkmk2d0e7us

* Group Product Manager, Platform (hybrid, $220,000 - $270,000): https://grnh.se/bd8io8wp7us

* Head of Technical Operations (hybrid, $180,000- $230,000): https://grnh.se/gw86i0tc7us

* Senior Product Designer (hybrid, $140,000 - $190,000): https://grnh.se/2nlrivyp7us

* Software Engineer - Infrastructure, Data Platform (hybrid, $162,000 - $216,000): https://grnh.se/d6s6od6w7us

* Product Marketing Manager (remote, $90,000 - $140,000): https://grnh.se/r7unwhdx7us

* Product Intelligence & Data Analytics Manager (remote, $90,000 - $140,000): https://grnh.se/lyd76nke7us

CLEAR | Senior Software Engineers (Fullstack & Backend), Staff/Lead iOS Engineer, Infrastructure Engineers| NYC Onsite (4-5 days in-office w/ free catered lunch daily) | https://www.clearme.com/

CLEAR is building THE secure identity company of the future. Our mission is to make experiences safer and easier—physically and digitally. With more than 38 million Members and a growing network of partners across the world, CLEAR's secure identity platform is transforming the way people live, work, and travel. Whether it’s at the airport, stadium, or throughout your everyday life, CLEAR unlocks the magic of frictionless experiences.

If interested, apply here --> https://grnh.se/e4e5dc881us

AveryIQ | Austin, TX | Engineering & Sales | averyiq.com

AveryIQ is a completely vertical, all-in-one agentic property management firm. We are building our own software that can answer tenant questions, do payments and accounting, and handle repairs. We run operations for many multifamily rentals around Texas, and scaling nationwide.

- Our stack is Bun / Hono / Next / Expo

- We are YC-backed (W'24)

- Strong engineering/builder culture.

- Prefer Austin in-person, but open to extremely talented remote folks in timezones adjacent to CST.

https://averyiq.com/careers

Addepar is hiring a Software Engineering Manager for our New Workflow Platform. We are pivoting from a SaaS suite to a global orchestration platform. We’re looking for a hands-on leader with 2+ years of management experience and a deep understanding of workflow technologies such as Temporal, n8n, Pipedream and Distributed Systems. Lead a team of Senior Staff engineers building the "Agentic Fabric" of the financial world.This is a hybrid role in our NYC office. Hybrid | NYC | Python/Java

Job description: https://job-boards.greenhouse.io/addepar1/jobs/8460804002 Reach out directly here: [email protected]

Falconer | Founding Backend Engineer | HYBRID (USA, SF Bay Area preferred) | Full-time | $150-250K + equity | https://falconer.com

Hey HN! I’m an engineer at Falconer, a well-funded SF startup building the future of self-updating knowledge.

We’re a small team where everyone excels at what they do. At Falconer, you’ll join former staff-level engineers from Meta, Uber, Google, and Amazon, alongside others deeply involved in open-source culture, including myself.

As a founding engineer, you'll have a major impact on our product development and technical direction over our infrastructure.

To apply: https://falconer.com/jobs?ashby_jid=cf424d45-bc08-4036-be3d-...

SkySafe (https://skysafe.io) | Wireless Engineer (SDR) | San Diego, CA | REMOTE or HYBRID

At SkySafe we build drone detection and tracking at scale.

I am looking for a Wireless Communications Engineer with SDR expertise to join my team; I'm the hiring manager.

What I'm looking for:

* Background in wireless communications / signal processing theory and math.

* Experience building software-based wireless modems.

* Experience writing and optimizing software-defined radio code in C++ directly.

What you'd do:

* Implement all components of software defined modem systems from specifications and alongside our reverse engineering team (no RE experience necessary!)

* Optimize existing software defined modem systems from both a theory and practice perspective - that is, make both conceptual improvements to algorithmic approaches as well as practical improvements to implemented code.

* Architect and implement high-level improvements to SDR systems (scheduling, compute offload, etc.).

We have a strong system in place for remote SDR work and are open to remote candidates for this role. If you're in San Diego and want access to an office with nice equipment, that's even better. This position requires access to technology which is controlled by US Export laws, so you also need to be an eligible US Person.

What we have to offer: $145-200k. Fun, small team dynamic. Work with experts in adjacent fields. Startup environment with good work-life balance and limited red tape. Rapid iteration and feedback in the wild - make a change, deploy it, and see telemetry come back in the same day. Good equipment at the office.

Apply: brian@ for a direct line, https://jobs.lever.co/skysafe for the formal route (we have some other roles I'm not the HM for listed there, too, if you're interested in the company!)

Factory AI | AI, Fullstack, Frontend, Platform, Data, Product Engineers + GTM, Design, Operations | San Francisco, CA (+ NY, London for some roles) | ONSITE | Full-time | https://factory.ai

At Factory we build Droids, autonomous software development agents that review PRs, implement features, run tests, fix incidents, and handle migrations for enterprise engineering teams. Droid is model agnostic and surface agnostic, and works across your CLI, IDE, Web/Desktop app, CI/CD, Slack, and Linear. Customers include Nvidia, Adobe, Adyen, Klarna, and Ernst & Young.

We raised a $150M Series C at a $1.5B valuation, backed by Khosla Ventures, Sequoia, Blackstone, Insight Partners, NEA, and NVIDIA.

We're hiring across the stack:

- AI Engineer: agentic systems, LLM integrations, evals

- Fullstack Engineer: platform, APIs, auth, billing, terminal UIs

- Frontend Engineer: web and desktop apps (React, TypeScript, Electron)

- Platform Engineer: infrastructure, sandboxing, CI/CD, cloud

- Product Engineer: end-to-end feature ownership

- Data Engineer: pipelines, analytics, telemetry at scale

- Security Engineer / Research Engineer

Stack: TypeScript, React, Node.js/Bun, Python, GCP/AWS, Firestore, Electron.

We're also hiring in these roles: Enterprise & Mid-Market AEs, Solutions Engineers, Forward Deployed Engineers, Product Marketing, Product Manager, Product Designer, Partnerships, and Operations (RevOps, BizOps, People Ops, Recruiting). Some roles available in NYC and London.

In-office 5 days a week in SF (walking distance to Caltrain). Catered lunch and dinner, full medical/dental/vision, 401(k).

If you have strong opinions about how AI should actually work for production engineering systems at enterprise scale: we want to talk.

Apply: https://factory.ai/careers

Orenva | Senior Contract Engineer | Remote | Contract

Orenva is building governance infrastructure for founder-led businesses using AI — a multi-agent web system that keeps AI and human teams aligned with founder as work scales. Product strategy is authored in depth: agent specs, validation rules, intake design, output schemas, governance checks, and platform contracts. Your job is to wire authored input into a working system, not invent the product.

Likely Python or TypeScript; I'm open to your recommendation based on the spec. Multi-agent runtime, schema-first design, full-stack web, versioned outputs. Fixed-bid preferred; hourly with cap accepted. Subcontracting mid-grade under your senior oversight welcome.

Start is contingent on funding close. Estimated build: 3–6 months. Strong fit will become an ongoing technical lead / fractional CTO relationship.

Email [email protected] to request the packet.

We The Flywheel | Remote (Worldwide) / Ho Chi Minh City (Hybrid) | Part-time | https://wetheflywheel.com

We are a global media network, digital consultancy, and product studio focused on helping companies grow through technology and reach audiences at scale.

We are hiring for:

Growth Marketer (Entry-level, Remote, Worldwide) https://wetheflywheel.com/en/careers/growth-marketer-remote/

Growth Marketer (Entry-level, Ho Chi Minh City, Hybrid) https://wetheflywheel.com/en/careers/growth-marketer-saigon/

Digital PR & Media Outreach (Mid-level, Remote, Worldwide) https://wetheflywheel.com/en/careers/digital-pr-media-outrea...

Product Manager (Mid-level, Remote, Worldwide) https://wetheflywheel.com/en/careers/product-manager-remote/

Product Manager (Mid-level, Ho Chi Minh City, Hybrid) https://wetheflywheel.com/en/careers/product-manager-saigon/

Brand Identity & Product Designer (Intermediate Level, Remote, Worldwide) https://wetheflywheel.com/en/careers/brand-product-designer/

Do you want to work on distributed systems? We are building the stack for running agents in production.

https://github.com/agentspan-ai/agentspan

Apply: https://job-boards.greenhouse.io/orkes/jobs/4998231008

https://job-boards.greenhouse.io/orkes/jobs/4894213008

https://job-boards.greenhouse.io/orkes/jobs/5203462008

All the roles are in in-office in Sunnyvale, CA

Red Balloon Security | Security Researchers, Software Engineers | NYC, Northern Virginia | ONSITE, HYBRID | Full-time, Interns (paid) | US Citizenship Required | https://redballoonsecurity.com

We are a team of expert researchers and engineers focused on securing embedded devices. We work with partners across critical industries, and on government-funded research programs (think DARPA). "Full-stack" for us doesn't just stop at back end code; it means being comfortable with operating systems, firmware, and signals going over the wire. You'll succeed here if you are a quick learner who loves working independently on tough, technical problems nobody has ever solved before.

Day-to-day tasks might include:

* Tearing apart a device in our lab, reverse engineering its firmware, and finding security vulnerabilities

* Developing an automated, robotic platform for hardware reverse engineering (custom hardware, vision models, user interfaces, etc.)

* Hooking and patching RTOS kernel functions to execute defensive device integrity validation code, without violating real-time requirements

* Building scalable servers for processing millions of device telemetry messages across thousands of concurrent connections

* Maintaining open-source reverse engineering tools (like OFRAK https://ofrak.com) and cooking up fun demos for hacker conferences (like this web game we built for DEF CON in 2023 https://ofrak.com/tetris/)

Our main office is in Manhattan, but we are building out a new office in Northern Virginia. US citizenship required. Bonus points if you have an active security clearance, or are willing to get one.

Be sure to mention Hacker News in your application.

https://redballoonsecurity.com/careers/

Tandem Health | Software Engineers | On-site in Stockholm, Sweden | Full time

At Tandem Health we're building a clinician copilot to allow clinicians to focus on care rather than administration. We’re building, launching and iterating quickly, and are already rolling out across some of the largest care chains across Europe, including most of the NHS.

Our first product listens in to the patient-clinician encounter to generate medical records, allowing clinicians to save 5-10 minutes per patient. No longer do clinicians have to catch up on administration after hours.

We’re expanding our Stockholm team with exceptional builders in a wide range of roles.

More info at https://tandemhealth.ai/about/careers

Castleton Tower | Senior Consultant (Data Engineering, Investment Analytics, Strategy) | Hybrid (US)

Castleton Tower is a boutique consulting firm founded by executives who have built and led quantitative research, data science, and technology teams at top-tier hedge funds and asset managers. We work with investment management firms (asset allocators, asset managers, hedge funds, family offices, and RIAs) helping them modernize their data infrastructure and build AI-ready foundations.

We're looking for smart, motivated, high-agency people with similar backgrounds in either data engineering or investing.

We have postings up on job boards, but if you email me a resume and 2 sentences you wrote on why you'd be a good fit, I will guarantee it gets looked at.

# Moyai | Amsterdam, The Netherlands | FULL-TIME | ONSITE | Founding Product Engineer

About the company:

• Technical founding team with relevant industry experience

• Backed by well-known European VCs (SpeedInvest + Galion.exe)

• Cloud native & freedom to shape our tech stack (TypeScript + Python)

Ideal candidate:

• Previous experience at start-up building tech at scale

• Thinks in terms of product functionality and customer demands not just features

• Familiar with API first practices and frameworks

• Bonus points if you are an ex-founder or have been first hire before

Moyai is an AI-powered agent monitoring tool for AI engineers looking to catch agent failures in production. Reach out to the founder directly: https://www.linkedin.com/in/rhommes/ or visit our website https://moyai.ai

General Fusion | Senior HPC System Administrator | Richmond, BC, Canada | ONSITE or HYBRID (3 days/week) | Full-Time | $126k-$154k CAD | Immigration support for US candidates

General Fusion is a fusion energy startup (est. 2002) operating a fusion demonstration machine (LM26) at our Richmond, BC labs. We're hiring an HPC Admin to manage and evolve our Rocky Linux cluster (70 nodes, 1PB storage, SLURM) and help shape our broader research data infrastructure, bridging simulation and experimental data systems.

Stack: Rocky Linux, SLURM, InfiniBand, Apptainer, Prometheus/Grafana, HDF5/Parquet, DVC/LakeFS, ClickHouse/DuckDB, MongoDB

Requirements: 5+ years in scientific/HPC computing, 2+ years managing HPC clusters, strong Linux sysadmin background.

Apply here: https://workforcenow.adp.com/mascsr/default/mdf/recruitment/...

Canopi| REMOTE (US-Based Preferred) | Senior Software Engineer | Contract | canopi.work

Hey this is Dixon from Canopi, a workforce risk intelligence platform built for ground transportation operators. Our AI engine continuously monitors driver eligibility signals and surfaces real-time alerts before a carrier loses a driver, gets fined, or faces a liability event. We are not a compliance tool. We are the autonomous brain that makes driver risk intelligence possible at scale.

Canopi is a Microsoft for Startups company building entirely on Azure, and is hiring engineers who want to build something that doesn't exist in the market today. We are open to an equity-first engagement while we close our seed round.

Reach out to [email protected] and mention HN in your email!

Strix (strix.ai, https://github.com/usestrix/strix)| Founding Engineer | NYC/SF

We built the largest open-source AI pentesting framework — 25k GitHub stars, 80k active users, 15B LLM tokens processed daily, 1,800 pentests run per day. Two of us right now. You'd be the third.

Looking for a founding-engineer engineer who's done 0→1 before and wants to own the architecture of something already at scale. You'll touch everything — infra, product, research tooling. Python/TypeScript stack, AI-native workflows, real security problems.

Email [email protected] — tell us something you've built and why it was hard.

Kredit | .NET Engineer Roles | Remote (US) | Full-time

Kredit (https://www.kredit.fyi) is on a mission to resolve consumer debt. We help people get out of financial hardship and offer tools for companies looking to manage their internal processes. Kredit is a small team and growing.

Our stack: .NET Core, C#, PostgreSQL, CQRS, Angular, GCP, Kubernetes, Terraform and much more. We are looking full-stack engineers that have a .NET background, eager to learn and motivated to work in a startup.

If this sounds interesting to you, please reach out to recruiting at trykredit.com

Yassi|Senior Fullstack Engineer (Golang, Node.js/React, AWS) 3 days in-office Chicago

YASSI provides real-time access to vehicle title, lien, and registration data directly from U.S. state motor vehicle agencies. Unlike traditional bulk data providers, YASSI retrieves each vehicle record live at the time of request, ensuring the most accurate and current information available.

YASSI is the only provider offering an enterprise-grade solution purpose-built for real-time vehicle data at national scale. In addition, YASSI is uniquely positioned as the only platform that combines real-time vehicle record access with digital repossession title processing, enabling lenders to verify lien status and complete repo titling workflows within a single, integrated solution.

We’re rethinking how vehicle data, titling, and compliance infrastructure works— bringing real-time connectivity and transparency to an industry that’s long overdue for modernization. We are already profitable 6 years in. That is unique for a start-up.

Actively building out our engineering team in downtown Chicago and we are open to senior/staff level.

Job description here:

Sr. Full-stack Engineer - https://apply.workable.com/yassi/j/60C534A983/

Email at: patti -dot- lopez - at - yassi - com

MongoDB | Senior/Staff/Lead Site Reliability Engineers (SRE) and Infra SWE, Multiple Teams | REMOTE (US) or HYBRID (NYC, Dublin) | Full-Time

We are looking for experienced Site Reliability Engineers and Infrastructure Software Engineers to help build, scale, and secure the foundation of MongoDB Atlas, our globally distributed, multi-cloud database platform running across AWS, GCP, and Azure.

SRE at MongoDB is a builder role. We are heavily focused on making the platform more scalable, resilient, secure and self-service.

We have open roles (Senior, Staff, Lead) across several of our core Infrastructure teams:

- Infrastructure Security (InfraSec): Building infrastructure security controls and security observability tooling leveraging eBPF and Linux security mechanisms.

- Fabric: Building out service mesh, networking, and internal traffic routing.

- Storage Layer Services: Building our next-generation disaggregated storage architectures.

- Fleet Management & Deployments: Automating the lifecycle, deployments, and control planes of massive multi-cloud Kubernetes clusters.

- Atlas Infrastructure: Building core infrastructure operations on hundreds of thousands of Linux servers.

We're looking for engineers with a strong systems mindset who have:

- 5+ years of experience in SWE, SRE, or similar roles.

- Proficiency in at least one programming language: Golang, Rust, Python, C/C++ etc.

- Deep understanding of Linux internals, networking, distributed systems, and/or Kubernetes.

- Familiarity with at least one major cloud provider (AWS, GCP, or Azure).

- A builder's mentality: you think about failure modes, observability, and operability alongside correctness.

For any questions, or to apply directly (please mention HN) email: [email protected]

You can view our open roles at: https://www.mongodb.com/careers/jobs

Krea; Fulltime; Onsite, San Francisco, CA, USA.

I'm the cofounder of Krea (https://www.krea.ai/). We build creative tools and large-scale infrastructure for multimedia teams. Users range from hobbyists to world-renowned creatives: architects behind the World Trade Center or creative teams at Apple.

We treat research, engineering, and creativity as first-class citizens; we want engineers for our research, product, and supercomputing teams.

What we value (staff writings):

- AGI: https://www.matthewnewton.com/blog/arc-challenge-diffusion

- Diffusion research: https://re-n-y.github.io/devlog/rambling/steering/

- Pragmatic LLM reflections: https://maxemitchell.com/writings/i-read-all-of-cloudflares-...

- Low-level computing: https://gab-menezes.github.io/2025/01/13/using-the-most-unhi...

- Open-sourcing our research: https://www.krea.ai/blog/flux-krea-open-source-release

Some of our projects:

- Large-scale multimodal model training (e.g. distributed training, 1000+ k8s GPU clusters, petabytes of data pipelines, ...)

- WebGL2/WebGPU for node-based tools (SideFX Houdini) & CRDTs/OTs for collaboration

- Cross-service metrics, tracing, and observability

- LLM-driven JS bundle optimization and testing

---

Apply via `ssh [email protected]`

GAIM | Onsite (Malmö, Sweden / Copenhagen, Denmark) | Full Time | gaim.com

GAIM is a marksman training simulation game, we're expanding our development team with a Rust programmer to help work with our next generation backend to support on-the-go analysis of their performance in the simulator.

Prior gamedev experience is a bonus but not required.

Email in profile, or reach out over linkedin: https://www.linkedin.com/in/jharasym/

Due to export controls of this kind of simulator, applicants must be EU citizens.