# Andrew Bialecki

> Andrew Bialecki is the Boston-based co-founder, co-CEO and chairperson of Klaviyo. A Harvard physics, astronomy and astrophysics graduate, he worked in analytics and marketing software before founding Klaviyo with Ed Hallen in 2012. He helped lead the company from its bootstrapped beginnings to a 2023 NYSE listing and now focuses on its AI vision and products.

- **Role:** Co-Founder, Co-Chief Executive Officer and Chairperson at Klaviyo
- **Organizations:** Klaviyo, RockTech, Performable, Applied Predictive Technologies
- **Nationality:** American
- **Education:** Bachelor of Arts in Physics, Astronomy and Astrophysics, Harvard University
- **Known for:** Co-founded Klaviyo in 2012 and helped build it through three early years of bootstrapping., Led Klaviyo to its September 2023 public listing., Named to the Boston Globe Tech Power Players 50 in 2022.

## Career timeline

- **2007-2010** — Lead Engineer at Applied Predictive Technologies, September 2007-June 2010.
- **2010-2011** — Senior Engineer at Performable, July 2010-March 2011.
- **2011-2012** — Chief Technology Officer at RockTech, April 2011-June 2012.
- **2012** — Co-founded Klaviyo with Ed Hallen; CEO and board member from September 2012.
- **2022** — Named to the Boston Globe Tech Power Players 50.
- **2023** — Klaviyo began trading on the New York Stock Exchange under KVYO on September 20.
- **2026** — Became co-CEO alongside Chano Fernández effective January 1, focusing on AI vision and products.

## Achievements

- Co-founded Klaviyo in 2012 and helped build it through three early years of bootstrapping.
- Led Klaviyo to its September 2023 public listing.
- Named to the Boston Globe Tech Power Players 50 in 2022.
- Klaviyo reported second-quarter 2026 revenue of $370.6 million, up 26% year over year.

## Latest updates

- **2026-09** — At K:BOS, Klaviyo announced Headless access, SQL previews, Personalization and agent updates; Bialecki published a product essay on September 9.
- **2026-08** — Klaviyo announced an agreement to acquire Agency’s team and technology, with Elias Torres to become chief product officer following closing and report to Bialecki.
- **2026-06** — Discussed autonomous customer experience, shared customer context and service as a growth engine on Punk CX.
- **2026-01** — Co-CEO arrangement with Chano Fernández became effective January 1.

## Links

- Website: https://www.klaviyo.com/
- LinkedIn: https://www.linkedin.com/in/bialecki
- Twitter/X: https://x.com/abialecki
- GitHub: https://github.com/bialecki

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Profile page: https://yespress.io/andrew-bialecki
Published by YesPress — https://yespress.io
Last updated: 2026-10-11