Backend Engineer
Deep dive into API design, database internals, distributed systems, and security. You'll need to explain real-world architectural decisions and their trade-offs.
Free. No card. Ten runs a month.
This is a senior-level interview. The candidate should demonstrate experience designing systems at scale. Ask about real outages they've debugged, migrations they've led, and performance problems they've solved. Don't accept theoretical answers — push for 'tell me about a time you actually built this.' Challenge claims about scale with specific numbers.
What to expect
The questions are pitched at the senior level, and the interviewer follows up on what you say rather than reading down a list.