3 min read Frontend testing has matured significantly — Jest is sometimes replaced by Vitest, Cypress and Playwright dominate E2E, and React Testing […] Read article
2 min read “Build a virtualized autocomplete” extends the search-as-you-type question to handle large datasets — 10,000 countries, 100,000 products, or any list Read article
3 min read Micro-frontends are the architectural pattern of splitting a large web application into independently developed and deployed pieces. Module Federation (Webpack Read article
3 min read “Build a date picker” or “build a calendar component” is a deceptively hard frontend interview question. It exposes whether you Read article
3 min read React in 2026 is significantly different from React in 2020. Server Components, Suspense for data fetching, concurrent rendering, and useTransition Read article
3 min read “What would you tell us about your team’s strategy?” is a question that catches many EMs off guard. Operational managers Read article
3 min read Code review is one of the highest-leverage engineering rituals. Strong code review cultures produce better code, faster onboarding, more mentorship, Read article
3 min read How an engineering manager handles production incidents shapes the team’s reliability culture for years. Incidents are also a reliable interview Read article
4 min read The career growth conversation is one of the most impactful things an EM can do, and one of the most Read article
3 min read The 1:1 is the highest-leverage 30 minutes of an engineering manager’s week. Done well, it builds trust, surfaces problems early, Read article
3 min read Hiring junior engineers is process-heavy and noisy. Hiring senior engineers (Senior, Staff, Principal) is process-light and high-stakes. The bar is Read article
2 min read Designing a real-time multiplayer mobile game touches more disciplines than almost any other mobile system design question — location services, Read article
2 min read Mobile live streaming is fundamentally different from on-demand video. Latency matters — viewers expect their reactions to reach the streamer Read article
2 min read Mobile AR is one of the most demanding mobile system design topics — combining computer vision, real-time rendering, sensor fusion, Read article
2 min read Mobile video conferencing is one of the most demanding mobile system design problems. The interview tests whether you can design Read article
