Cohorts I — XII 22 countries · 14 founders

Ninety-six
engineers,
one orbit.

Four cohorts have graduated since MMXXIV. They lead teams at fourteen companies, founded six, and read each other's code on a private Slack we don't moderate.

96
Total alumni
04
Cohorts to date
38
Leading teams
14·
Founders
04 — Featured

Six engineers, three cohorts.

A small selection — staff engineers, founders, and the one we sent back to graduate school. Read what they're working on now, in their own words.

Portrait of Hannah Lindqvist Cohort IX
A · 01 Stockholm → SF

Hannah Lindqvist

Staff Engineer · Linear

I came in writing code that worked. I left writing code other engineers asked to read. You can't unlearn that.

Portrait of Marcus Okonkwo Cohort X
A · 02 Lagos → Berlin

Marcus Okonkwo

Founder · Onefold (YC W26)

The reading group was the part I underestimated. Two years later our codebase still reads like it was written by people who'd argued about it.

Portrait of Saoirse Whelan Cohort VIII
A · 03 Dublin → NY

Saoirse Whelan

Compiler engineer · Modular

I joined Lattice as a frontend dev who didn't think she could write a compiler. Three months later I was being paid to.

Portrait of David Levi Cohort XI
A · 04 Tel Aviv → Remote

David Levi

Principal Engineer · Vercel

Twelve weeks of office hours with people who'd already shipped the things I wanted to ship. Worth more than the previous five years of my career.

Portrait of Yuki Tanaka Cohort IX
A · 05 Tokyo → SF

Yuki Tanaka

Eng Lead, Payments · Stripe

The distributed-systems track is the only place I've seen Raft taught the way it deserves — slowly, and with a working implementation by the end.

Portrait of Amara Diallo Cohort X
A · 06 Dakar → Paris

Amara Diallo

Founder · Glyph Studios

Editorial Engineering taught me that writing matters as much as code does. Our docs win us customers our pricing page can't.

05 — The Directory

More from the cohorts.

Twelve more graduates and what they're building now. Names link out to their work, by their permission.

07. Felix Brunner Founding engineer · Stitchworks Cohort VII · Zürich ↗ 08. Inara Khoury Senior engineer · Anthropic Cohort XI · Beirut → SF ↗ 09. Pavel Marković Performance lead · Cloudflare Cohort VIII · Belgrade ↗ 10. Rosa Castellanos Co-founder · Plenum Cohort X · Mexico City ↗ 11. Jonas Haas Senior systems eng · Fly.io Cohort IX · Hamburg ↗ 12. Ngozi Eze Engineering manager · Supabase Cohort VIII · Lagos → London ↗ 13. Esther Ben-Ami PhD candidate · ETH Zürich Cohort VII · Haifa → Zürich ↗ 14. Tamás Varga Staff eng, Kernel team · Replicate Cohort XI · Budapest ↗ 15. Lina Strömberg Founder · Vellum (acquired) Cohort VIII · Stockholm → Oslo ↗ 16. Daniyar Iskakov Senior eng · Hugging Face Cohort X · Almaty → Paris ↗ 17. Beatrice Okafor Staff eng, runtime team · Bun Cohort IX · Abuja → Berlin ↗ 18. Alessio Conti Co-founder · Aperture Cohort XI · Milan → London ↗
06 — Where they ended up

A short list of the destinations.

Linear04 alumni · Editor / Sync
Stripe06 alumni · Payments / Infra
Vercel03 alumni · Runtime / Edge
Modular02 alumni · Compilers
Cloudflare04 alumni · Workers / Perf
Anthropic02 alumni · Inference
Fly.io02 alumni · Systems
Supabase02 alumni · Postgres
Replicate01 alum · GPU runtime
Hugging Face02 alumni · Models
Bun01 alum · Runtime
+ founded · 14Onefold · Glyph · Plenum · Vellum · Stitchworks · Aperture · &c.
“

We don't track placement rates because we don't run that kind of school. We track who is still reading whose code three years after they graduated.

The Faculty · MMXXVI
Apply

The shortest path
to this directory.

Cohort XIII opens January 2026. Thirty-two seats. Apply once, hear back personally within forty-eight hours.

Begin your application