All great engineers share a pattern.
They start with curiosity. Invest in depth. The rest, including money, takes care of itself.
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- Over $1,000 in perks
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3mo, 1y and lifetime plans available
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Enjoyed by developers at the world's best companies
Hear it from our members
Engineers at top teams love The CodeCrafters Way.
Djordje Lukic
Docker contributor
These guys ruined my weekend
Charles Guo
Scala Team at Stripe
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)
Cindy Wu
Engineering at Vercel
I've started the SQLite challenge, enjoying it a lot so far. Just the right level of guidance, helpful yet gives you a lot of freedom to explore and learn for yourself.
Raghav Dua
SRE at Coinbase
I spent a full day on your course and ended up building the whole thing myself. As a SRE (and mostly a user of SQLite), digging into the internals blew me away.
Djordje Lukic
Docker contributor
These guys ruined my weekend
Ananthalakshmi Sankar
Engineer at Apple
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!
Raghav Dua
SRE at Coinbase
I spent a full day on your course and ended up building the whole thing myself. As a SRE (and mostly a user of SQLite), digging into the internals blew me away.
Rahul Tarak
Pioneer.app & ODX1 Fellow
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.
Charles Guo
Scala Team at Stripe
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)
Akshata Mohan
Sr. Data Scientist at Cloudflare
I'm learning about how Redis works under the hood, system calls, socket programming in Python; something I've never done before
Cindy Wu
Engineering at Vercel
I've started the SQLite challenge, enjoying it a lot so far. Just the right level of guidance, helpful yet gives you a lot of freedom to explore and learn for yourself.
Pranjal Paliwal
Winner of HackAtom
My favorite way to master a language.
Vladislav Ten
SWE at Microsoft
In a perfect world, job interviews ask for assignments like CodeCrafters instead of Leetcode. The best way to refresh your programming language skills and learn something new about Redis, Git, SQLite internals.
Kang Ming Tay
SWE at Supabase
The challenge helped me dive into its internals, through *actual* practice. Super fun.
Jonathan Lorimer
Senior SWE at Mercury
I was really impressed that they support Haskell, and will probably use this to learn Rust! The git-based workflow is 👨🍳
Beyang Liu
CTO at Sourcegraph
Found out from a colleague. It has you build your own version of things like Git and SQLite from scratch. A cool way to build a stronger mental model of how those tools work.