Software Engineer interview questions and answers
6 questions asked in software engineer interviews, grouped by round. Where a strong answer has a clear shape, it’s spelled out underneath.
Tell me about a time you disagreed with a teammate on a technical decision.
Open-ended. Structure your answer as situation, action, then measurable result.
midDescribe a situation where you had to ship under pressure with imperfect information.
Open-ended. Structure your answer as situation, action, then measurable result.
seniorWhy do you want to work at our company?
Open-ended. Structure your answer as situation, action, then measurable result.
juniorExplain the difference between concurrency and parallelism.
Concurrency is about dealing with multiple things at once; parallelism is about doing multiple things at once.
midHow would you design a URL shortener like bit.ly?
Hash-based with collision handling, a relational store for mappings, caching layer, analytics.
midWalk me through how you'd find and fix a memory leak in a long-running service.
Heap dump, profilers, pmap / heaptrack; look for growing caches, missing unrefs, listener leaks.
seniorReading them isn’t rehearsing them
Practise these against an AI interviewer that asks follow-ups and scores your answers like a real panel. Or check your resume first with the free ATS score checker.
To see the full sequence of rounds this field runs, read the IT and software mock interview guide.
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