Design Uber Rider App: Location, Maps, and Real-Time ETA
2 min read “Design Uber” usually means the dispatcher backend. In a mobile system design round you are designing the rider experience: a […] Read article
2 min read “Design Uber” usually means the dispatcher backend. In a mobile system design round you are designing the rider experience: a […] Read article
2 min read Designing Instagram in a mobile interview is different from designing it as a backend system. The interviewer wants to see Read article
2 min read “Design a mobile app that works fully offline” is a common system design prompt. Real-world examples: notes apps, todo apps, Read article
2 min read TikTok’s mobile feed is one of the hardest moving targets in mobile engineering. Vertical full-screen video, instant-tap scroll, autoplay with Read article
2 min read Push notifications look simple from the user side — a banner appears, you tap it, the app opens. From an Read article
2 min read “Design WhatsApp” sounds like a backend question, but in a mobile system design round the interviewer wants to see you Read article
4 min read Linear is one of the more selective frontend hires in 2026. The company has built a reputation for craft — Read article
4 min read Vercel hires more senior frontend engineers than nearly any other company in 2026. The product surface (the deployment platform, the Read article
3 min read Notion’s frontend engineering hires sit in a particular niche: the block-based editor, the database views, the multi-platform consistency between web Read article
4 min read Figma’s frontend interview is one of the deepest in the industry. The product surface — a real-time collaborative design editor Read article
6 min read JavaScript and TypeScript fundamentals get tested in frontend interviews in ways generalist SWE interviews skip. Closures, prototypal inheritance, the event Read article
4 min read The chat UI machine-coding round tests whether the candidate can build a real-time-feeling messaging interface from scratch. The exercise covers Read article
4 min read The image carousel machine-coding round is one of the more deceptive frontend interview tests. Surface-simple — show images, navigate between Read article
5 min read Notion’s block-based editor is the second most-asked frontend system design question after Figma’s collaborative editor. The problem — design a Read article
5 min read Performance interviews at senior+ frontend roles increasingly center on Core Web Vitals — Google’s set of three metrics that quantify Read article