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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.
Trusted by engineers at top companies
Get access to 40% off via @cascadiajs
Hear it from our members
Engineers at top teams love The CodeCrafters WayTM.
“
These guys ruined my weekend
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!
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.
Raghav Dua
SRE at Coinbase
“
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.
Rahul Tarak
Pioneer.app & ODX1 Fellow
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!
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.
Raghav Dua
SRE at Coinbase
“
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.
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)
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
Akshata Mohan
Senior Data Scientist at Cloudflare
“
My favorite way to master a language.
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.
Beyang Liu
CTO at SourceGraph
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
Akshata Mohan
Senior Data Scientist at Cloudflare
“
My favorite way to master a language.
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.
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.
Beyang Liu
CTO at SourceGraph
“
The Docker challenge helped me dive into its internals, through *actual* practice. Super fun.
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:
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!
Patrick Burris
Senior Software Developer at CenturyLink
Beyang Liu
CTO at SourceGraph
“
The Docker challenge helped me dive into its internals, through *actual* practice. Super fun.
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:
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!
Patrick Burris
Senior Software Developer at CenturyLink
Get access to 40% off via @cascadiajs