I applied online. The process took 3 weeks. I interviewed at SpaceX in Jun 2015
Interview
Applied on company website. Received a call from HR several weeks later asking to schedule a technical interview. Completed two 30-minute phone interviews with the team that was interested in me. The interview was over phone and shared online text editor.
After the interviews I received a call from HR 20 minutes later regarding the team's decision.
Interview questions [2]
Question 1
Explain what a red-black tree is. What is the Big O for rebalancing? Here is a red-black tree class written in C++. Write a function to rebalance the tree.
Applied online has two round. First being an phone call with recruiter and the second being online with a team of engineer asked about my previous experience and then had a short coding leetcode style question
Interview questions [1]
Question 1
Explain a recent debugging problem and how you solved it.
Basic questions about python vs c++, am I authorized to work in the US, stack vs heap, projects and my experience mentioned in my resume, quick introduction about myself and why i wish to work at spacex.
Recruiter screens usually hit: time/space complexity of common operations, why O(log n) beats O(n), array vs hash map vs linked list tradeoffs, and Big-O of sorting. Want me to drill you on these?
Interview questions [1]
Question 1
recruiter called, they has a few big O questions and basic DSA