Founder Profile
Andrew Bialecki
Last reviewed: October 2026 · By Swet Parvadiya
Who is Andrew Bialecki?
Andrew Bialecki is a founder of Klaviyo, Inc., which was founded in 2012 with Ed Hallen.
- Company founded
- Klaviyo, Inc.
- Founded
- 2012
- Co-founders
- Ed Hallen
Background
Software engineer who worked at Applied Predictive Technologies and Performable (acquired by HubSpot) before starting Klaviyo.
Founding Story
Andrew Bialecki co-founded Klaviyo in 2012 and has led it since, taking it through its 2023 NYSE IPO and past $1 billion in annual revenue in 2025. Since January 1, 2026 he has served as co-CEO alongside Chano Fernández, focusing on product, engineering and long-term vision. Andrew Bialecki was born in 1986.
Sources
This profile does not yet cite a source specific to Andrew Bialecki. The sources below document the company company rather than the person, so check them against the claims above.
- Klaviyo Q2 2026 results press release (Klaviyo, Inc.)
- Klaviyo Q4 and FY2025 results press release (Klaviyo, Inc.)