You could go to LinkedIn and look at people in the:

* structures

* propulsion

* avionics

* flight software

departments, because they all work together to make this happen, along with support from IT/SRE. The person most responsible for ensuring that it happens is Lars Blackmore[1], who was also the Responsible Engineer in charge of making sure Falcon 9 landed successfully

[1] - https://linkedin.com/in/lars-blackmore-78a237