Process
Kicking off the technical round, I was asked to design a URL shortening service, which felt straightforward.
Next, the focus shifted to implementing an in-memory database with TTL and backup.
The final challenge involved fixing a race condition in a concurrent deposit scenario. Funny enough, I had done a mock on PracHub that covered almost all of these exact topics just a week prior.
Overall, the interview was easy, and I ended up receiving an offer, though I ultimately declined it.
Questions
Design and Implement a URL Shortening Service
• Implement an in-memory database with TTL and backup • Fix race condition in concurrent deposit
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Interview Statistics
The following metrics were computed from 1 interview experience for the xAI Software Development Engineer role.
Success Rate
xAI's interview process for their Software Development Engineer roles is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having very good feelings for xAI's Software Development Engineer interview process.
xAI Work Experiences
- 4.0Great contract workAI Trainer • Former EmployeeSan Francisco, California, United StatesOctober 21, 2025Pros: Enjoyable and fun work. It was great to work on diverse projects.Cons: There were lots of pivots, but that is expected with how fast AI is changing.
- 5.0Good Company, Good CultureRemote AI Trainer • Former EmployeeBoston, Massachusetts, United StatesOctober 26, 2025Pros: Great culture where it's easy to focus on your work and not have to worry about anything else.Cons: It's owned by Elon Musk.
- 1.0Only IPO AI company worth it, but poor cultureSenior Software Engineer • Current EmployeePalo Alto, CAAugust 6, 2026Pros: Working on tech that lands in spaceCons: - The work culture is as bad as you would expect.
