# Merrill Lutsky

> Merrill Lutsky co-founded Graphite and led it as CEO, building a code-review company from a tool his team originally made for itself. A Harvard applied mathematics graduate and co-founder of Posmetrics, he announced Graphite’s agreement to join Cursor in December 2025. His public interviews describe a career shaped by customer feedback, long-standing friendships, and changes of direction.

- **Role:** Co-founder at Graphite
- **Organizations:** Graphite, Posmetrics, Square, Oscar, SelfMade, Clay, Rough Draft Ventures
- **Education:** B.A., Applied Mathematics / Economics, Harvard University
- **Known for:** Co-founded Posmetrics, a Y Combinator Winter 2013 company acquired in July 2013., Co-founded Graphite with Greg Foster and Tomas Reimers., Led Graphite through a pivot from other developer tools to code review.

## Career timeline

- **2011** — Northfield National Merit finalist; enrolled at Harvard.
- **2012** — Built Posmetrics with Erik Schluntz from a Harvard computer-science project.
- **2013** — Joined Y Combinator Winter 2013; Posmetrics was acquired in July; returned to Harvard.
- **2015** — Graduated from Harvard; early career included product work at Square.
- **2020** — Incorporated the company that became Graphite with Tomas Reimers and Greg Foster in March.
- **2021** — Internal code-review tooling emerged while the team worked on an iOS rollback product; it became the focus of the company.
- **2025** — Announced a $52 million Series B led by Accel and launched Diamond in March.
- **2025** — Announced Graphite’s definitive agreement to join Cursor on December 19.
- **2026** — Graphite introduced Cursor Cloud Agents integration in March.

## Achievements

- Co-founded Posmetrics, a Y Combinator Winter 2013 company acquired in July 2013.
- Co-founded Graphite with Greg Foster and Tomas Reimers.
- Led Graphite through a pivot from other developer tools to code review.
- Announced Graphite’s $52 million Series B in March 2025.
- Led Graphite into a definitive agreement to join Cursor in December 2025.

## Latest updates

- **2026-03** — Graphite launched Cursor Cloud Agents integration on March 2, connecting agent work and pull-request review.
- **2026-01** — A January 8 interview covered product-market fit, co-founder relationships, recruiting, and building in New York.
- **2025-12** — On December 19, announced Graphite’s definitive agreement to join Cursor, subject to customary closing conditions.
- **2025-10** — Graphite’s Series B post records retirement of the Diamond brand on October 8; its capabilities moved under Graphite Agent.
- **2025-03** — Announced a $52 million Series B led by Accel and the standalone Diamond reviewer.

## Links

- Website: https://blog.mlutsky.com/
- LinkedIn: https://www.linkedin.com/in/merrill-lutsky
- Twitter/X: https://x.com/MerrillLutsky
- GitHub: https://github.com/mlutsky

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Profile page: https://yespress.io/merrill-lutsky
Published by YesPress — https://yespress.io
Last updated: 2026-10-26