SpaceX Avionics Software Engineer interview questions

Recruiter Interview [phone]: A few basic behavioral questions and then we went down through my resume to discuss my experiences. Straightforward interview and the interviewer was incredibly nice. He helped me through the rest of the interview process. Coding Test [online]: 4 Questions: Write a simple algorithm to do X, here's a brute-force algorithm you should optimize, write an efficient algorithm to do Y, debug the following code by changing less than 4 lines. Technical Interview [phone]: This interview was with the lead engineer on the team. When emailing about this, they said to prepare to discuss my personal technical achievements, but rather was quizzed on networking, knowledge of python/multi-threading, and operating systems. The only question about my professional experience was to ask me what I was most proud of on my resume.