Technical Interviews That Actually Predict Good Engineers
Whiteboard algorithm puzzles predict who studied algorithm puzzles. Here's the interview format that's actually correlated with strong hires on my teams.
Tanjil Ahmed
Lead Software Engineer · Notionhive
Whiteboard interviews measure how well someone memorized a specific style of puzzle, under artificial pressure, disconnected from anything they'll actually do on the job. Having sat on both sides of a lot of these, the interview formats that actually predicted strong hires on my teams looked completely different.
- A realistic, small take-home task closer to actual work — reviewing a PR, debugging a real (sanitized) production issue — over an abstract algorithm.
- Ask candidates to walk through a real project they built, and probe the decisions, not just the outcome.
- Pair on a small task live, watching how they think and communicate under normal, not artificial, pressure.
- Evaluate collaboration signals — do they ask clarifying questions, do they explain tradeoffs — as seriously as the code itself.
The engineers who struggled with a whiteboard puzzle but shipped excellent, thoughtful code in a realistic take-home were, on every team I've built, the stronger long-term hires. The interview format was the actual signal problem, not the candidates.
A whiteboard puzzle tells you who studied whiteboard puzzles. It rarely tells you who ships good software under real conditions.