← Arena
Tracks
Interview tracks
Guided paths to a real outcome — each track is a goal and an ordered curriculum, not a pile of puzzles.
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AI Engineer
Context, retrieval, caching, and multi-agent design — the LLM-infra round.
0/11 cleared · 11 puzzles
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Systems Design
Caches, indexes, rate limits, sharding, consistent hashing — the classic infra round.
0/15 cleared · 15 puzzles
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Algorithms
DP, greedy, intervals, scheduling — the patterns behind the coding round.
0/15 cleared · 15 puzzles
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Interview Crash Course
Ten puzzles, three domains. The fastest path to interview-ready.
0/10 cleared · 10 puzzles