2 min read Confirmation dialogs (“Are you sure you want to delete?”) protect users from mistakes. Done well, they prevent disasters. Done poorly, […] Read article
3 min read Building a component library is one of the highest-leverage frontend specialties. A good library compounds across the entire org. A […] Read article
2 min read Plant care apps (PictureThis, Planta, Greg) and pet care apps (11pets, Pawtrack) seem niche but pop up frequently in mobile […] Read article
2 min read An image gallery with lightbox (thumbnails grid + tap-to-zoom modal) appears in many products. The interview tests virtualization, accessibility, gesture […] Read article
3 min read Web Workers and Service Workers are two confusingly-named browser APIs with very different purposes. Senior frontend interviews probe whether you […] Read article
2 min read Receipt-scanning expense apps (Expensify, Zoho Expense, modern fintech wallets) have become routine for business travelers and freelancers. The interview tests […] Read article
2 min read Habit-tracking apps (Streaks, Productive, Habitify, Atomic Habits-inspired apps) are simple-looking but reveal interesting system design questions: streak calculation, time-zone sensitivity, […] Read article
2 min read Personalized push notifications are an entire engineering discipline. The wrong notification produces uninstalls; the right one produces engagement. Companies like […] Read article
1 min read Hopper is the mobile-first travel platform that pioneered ML-powered price prediction for flights and hotels. Used by tens of millions […] Read interview guide
3 min read Companies with strong engineering writing cultures (Stripe, Amazon, Anthropic, Stripe again) consistently outperform peers on technical decision-making, onboarding, and asynchronous […] Read article