I applied online. The process took 5 weeks. I interviewed at NASA Goddard Space Flight Center (Blacksburg, VA) in Jan 2018
Interview
Was awesome. Great people. Loved the questions. Asked more about system design and the broad perspective of software engineering rather than small coding interview problems. Since NASA is less geared toward the small problems, they want to make sure you can think in terms of the mission and mission assurance rather than just solving for time complexity.
Interview questions [1]
Question 1
How would you debug a flight simulation system given that one area has a bug?