every course is a one-time purchase you keep forever. all access covers the whole catalog and whatever ships next.

33 lessons · 6 modules · ~14 hours
hello world to a tested, concurrent http service. you build feedstack, one lesson at a time.

24 lessons · 6 modules · 4 hours
ai writes code. you architect systems. first principles, no hand-waving.

15 papers · 5 modules · 5 hours
the 15 papers that shaped how we build software, close-read one at a time.

17 lessons · 5 modules · 4h 34m
the 80% every engineer needs: complexity, the core structures, the algorithms on top.
less than two courses, for every course. cancel any time.
student? get 20% off. email mail@karnstack.com with proof of enrollment.
7-day refund, no questions. email mail@karnstack.com.
the usual stuff -- format, access, refunds. if you don’t see yours, mail me directly.
mail@karnstack.comthe usual stuff -- format, access, refunds. if you don’t see yours, mail me directly.
mail@karnstack.com