Practice on Real Broken Systems
Hands-on coding, SQL, Linux, and DevOps practice on real production systems in a live cloud workspace - not toy problems. Pick a track.
Every track here is hands-on practice on real systems, not flashcards or toy problems. You run real commands and fix real broken systems in a live cloud workspace - coding, SQL, Linux, and DevOps - and build a portfolio while you practice. Coding practice means debugging real broken services across the stack. SQL practice runs real queries against a real database - joins, aggregation, window functions, slow-query tuning. Linux practice gives you a real terminal in the browser, and DevOps practice has you fix real nginx, Kubernetes, Terraform, and CI/CD systems. Each track builds the skills the job actually tests, and every fix you ship becomes proof on a portfolio a hiring manager can open. Start free - junior tickets are open across every track, so you can practice on real systems today without a card.
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Frequently asked questions
What is the best way to practice coding?
Practice on real problems, not isolated puzzles: build and debug real systems end to end. That is what transfers to the job and what these tracks are built around.
Is the practice free?
Junior-level tickets are free across every track. Pro unlocks mid and senior tickets and unlimited monthly practice.
How is this different from LeetCode?
LeetCode drills algorithms; these tracks have you fix real broken systems - the kind of work most engineering roles actually test - and keep a portfolio of what you did.
Start with real work. Fix a real production system free in a live cloud workspace - every fix lands on your portfolio.
Start free →