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Stop letting advanced programming projects intimidate you. Start approaching them with the calm and confidence of a craftsman who has seen it before.

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Discover how core contributors to Docker and Next.js practice writing code at the edge of their abilities — as well as senior engineers at companies like Apple, NVIDIA, and Stripe.

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Engineers at top teams love The CodeCrafters WayTM.
“ These guys ruined my weekend avatar Djordje Lukic (@rumpl) Full-time Docker contributor
“ There are few sites I like as much that have a step by step guide. The real-time feedback is so good, it's creepy! avatar Ananthalakshmi Sankar Automation Engineer at Apple
“ I spent a full day on your Docker building course and ended up building the whole thing myself. As a SRE (and mostly a user of docker), digging into the internals blew me away. avatar Raghav Dua SRE at Booking.com
“ The Redis challenge was a great way to procrastinate sleeping for a week! A good change of pace from my regular work, and allowed me to explore some cool tech. I'll be back for more. avatar Rahul Tarak Pioneer.app & ODX1 Fellow
“ The Redis challenge was extremely fun. I ended up having to read Redis protocol specification doc pretty carefully in its entirety! The result felt like lightly-guided independent study, if that makes sense. (Which, again, was lots of fun) avatar Charles Guo Scala Team at Stripe
“ I'm learning about how Redis works under the hood, system calls, socket programming in Python — something I've never done before avatar Akshata Mohan Senior Data Scientist at Cloudflare
“ My favorite way to master a language. avatar Pranjal Paliwal $35k winner of HackAtom
“ Found out from a colleague. It has you build your own version of things like Git and Docker from scratch. A cool way to build a stronger mental model of how those tools work. avatar Beyang Liu CTO at SourceGraph
“ Found out from a colleague. It has you build your own version of things like Git and Docker from scratch. A cool way to build a stronger mental model of how those tools work. avatar Beyang Liu CTO at SourceGraph
“ The Docker challenge helped me dive into its internals, through *actual* practice. Super fun. avatar Kang Ming Tay Software Engineer at Supabase
“ I was really impressed that they support Haskell, and will probably use this to learn Rust! The git-based workflow is :chefkiss: avatar Jonathan Lorimer Lead SWE at Mercury Bank
“ The instant feedback right there in the git push is really cool. Didn't even know that was possible! avatar Patrick Burris Senior Software Developer at CenturyLink
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