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Crack senior backend interviews

Adaptive learning with FSRS spaced repetition, AI grading, and ADHD-friendly flow detection.

9 domains. Expert depth.

From Java fundamentals to distributed systems, cover everything senior architects need.

Adaptive difficulty

The platform tracks your performance and auto-escalates when you're in flow, or steps back when you need consolidation.

FSRS spaced repetition

Missed concepts resurface at the optimal interval — days, not never. ADHD-friendly interleaving keeps old material fresh.

AI-graded practice

Open-ended answers graded by LLM with structured rubrics. Get specific feedback, not just right/wrong.