⚠️ COMMON INTERVIEW MISTAKE #7 (BONUS) - Over-Engineering the Solution

The opposite failure mode from jumping into code too fast: spending 10 minutes designing an elaborate, "enterprise-grade" solution for a problem that just needed a simple loop.

This happens most often to engineers who've read a lot about design patterns and want to show off - but interviewers usually read it as poor judgment about scope, not seniority.

✅ What to do instead: match the complexity of your solution to the actual complexity of the problem. If the interviewer explicitly says "assume this only ever runs once, on a small input," you don't need to discuss caching, sharding, or abstract factory patterns.

A good gut-check question to ask yourself out loud: "Given the constraints we discussed, is this the SIMPLEST solution that meets them?" If you want to show deeper knowledge, mention the more complex approach briefly as a "if this needed to scale further, I'd consider X" - without actually implementing it unless asked.

Simplicity that solves the actual problem beats complexity that solves an imagined one. Every time.

Have you ever over-engineered something in an interview (or in real production code)? 😅