The Frontend Dojo
Train like it’s the real interview.
Rapid-fire the concepts a senior frontend screen actually asks, work through system-design mocks the way a strong candidate does, then prove it in a live sandbox and watch the runtime itself.
Recall each answer, reveal, self-grade. Score, streak, and a weak-spots deck that remembers what you’ve mastered. Filter to any topic.
Self-guided frontend system-design scenarios: clarify → requirements → architecture → trade-offs → deep dives, with red flags and strong-signal criteria.
A freeform React sandbox with a live iframe preview — prototype a component, try an idea, or work a take-home in the browser.
Watch the event loop order microtasks vs macrotasks in /visualize, or animate the data structure your algorithm operates on in /dsa.
Practice a specific company
Drops you into a mock focused on that company’s real interview loop, with its house-style prep notes.
What the drill covers
Concept & scenario topics researched from theSeniorDev’s frontend interview videos; all questions and answers re-authored and fact-checked.