Hiring low-latency C++ engineers: what to screen for
A practical screening checklist for execution and market-data roles.
Look past the language
Modern C++ fluency matters, but the best low-latency engineers think about the whole path: cache behaviour, memory layout, the kernel and the network.
Signals worth testing
Ask about lock-free data structures, measuring and profiling tail latency, kernel-bypass networking, and trade-offs they made in production systems.
Avoid trivia
Puzzles reward practice, not judgement. A walkthrough of a real system the candidate built tells you far more.
Starter article: review and edit before launch.