Coding interviews (DSA)
Patterns, adaptive practice, and an in-browser code editor.
Map your gaps in about 15 minutes.
Interview tracks
LeetCode Prep
Four tracks — coding (DSA), System Design, AI & FDE, and Agent Engineering — plus adaptive practice and mentor tools. Pick a track below; the sidebar follows you.
Choose your track
Everything lives under one trainer: 38 chapters, 70 skills, 343 quiz problems, 250+ runnable coding problems, and 359+ FAQs — organized so you never hunt through a flat list.
Start here
System Design
Scalability, data, distributed systems, cloud, and full case studies.
Framework, chapters, and cases.
AI & FDE interviews
LLM systems, RAG, agents, production AI, and Forward Deployed delivery.
Role paths, mocks, cost studio.
Agent Engineering
Become a superstar AI developer — Cursor, Claude Code, Codex, Copilot, skills, MCP, hooks, parallel agents, and your own SDK agents.
Start here, then follow the four-stage learning path.
- Find your levelSelf-assessment with your next three moves.→
- Learning pathTen chapters in four stages, one lesson at a time.→
- Hands-on labsParallel worktrees, SDK review agent, guardrail hooks.→
- Concepts & trainerTools, four layers, and the primitive trainer.→
- Starter kitCopy-paste AGENTS.md, hooks, MCP, and CI templates.→
- CapstonePortfolio project with a superstar rubric.→
- Agent Engineering FAQQ&A across 10 topics.→
- Practice quizzesAdaptive MCQs for agent competencies.→
Coach & mentors
AI coaching and optional mentor visibility.
Hints and pattern explanations.
How the adaptive loop works
- 1Assess skills across DSA, System Design, AI, and agent-engineering competencies
- 2Follow the chapter curriculum for your chosen track
- 3Practice with adaptive quizzes that escalate when you're ready
- 4Solve runnable problems in the in-browser code editor
- 5Drill FAQs and case studies before the real interview
- 6Track readiness on your CS pathway dashboard