Tech Interview Trends in 2025
2025 saw measurable shifts in how top companies evaluate engineering candidates. Some changes are permanent; others were experiments that rolled back.
AI-Assisted Coding Rounds
Several companies experimented with allowing GitHub Copilot or similar tools in coding rounds. The evaluation shifted from 'can you write this from scratch' to 'can you write a correct prompt and evaluate the AI output critically.' Acceptance is not universal.
Most companies (as of early 2026) still use AI-free coding rounds for the majority of the assessment. The consensus: AI assistance makes the coding round a less reliable signal. Expect traditional coding rounds to persist at most companies.
System Design Bar Rising
System design difficulty increased noticeably in 2025. More companies are testing distributed systems depth at the senior level and earlier. The days of senior engineers being able to pass with high-level architecture are ending.
Newer system design question categories: ML system design (design a recommendation system, design a feature store), data pipeline design (real-time vs batch, exactly-once semantics), and edge infrastructure (CDN design, points of presence).
Behavioral Assessment Changes
Several companies moved behavioral assessment earlier in the process (before the coding screen) to filter candidates who are technically strong but culturally misaligned. This signals that behavioral failure rates were high at late stages.
More companies are using structured behavioral scorecards and AI-assisted analysis of recorded responses. Candidates are reporting less variance in behavioral outcomes, which suggests more consistent scoring.
Take-Home and Async Formats
Take-home assessments for senior roles increased in 2025. The format: 3-4 hour problem delivered asynchronously, submitted within 48-72 hours. This filters candidates who perform poorly under live pressure but can produce excellent work given time.
Tradeoff for candidates: take-homes require significant time investment. Report companies now typically pay a stipend for senior take-homes ($200-500) to reduce rejection of qualified candidates who cannot afford to spend a day on an unpaid project.
Browse Current Questions
See what companies are currently asking in interviews.
Browse All Companies