Founder Profile
Ed Hallen
Last reviewed: October 2026 · By Swet Parvadiya
Who is Ed Hallen?
Ed Hallen is a founder of Klaviyo, Inc., which was founded in 2012 with Andrew Bialecki.
- Company founded
- Klaviyo, Inc.
- Founded
- 2012
- Co-founders
- Andrew Bialecki
Background
Software engineer and former Applied Predictive Technologies executive.
Founding Story
Ed Hallen co-founded Klaviyo in 2012 alongside Andrew Bialecki. Drawing on his deep background in data analytics, he helped architect the core premise of the company: that e-commerce marketing shouldn't be based on guessing, but on directly reading massive amounts of customer transaction data. He helped build the highly advanced database architecture that made Klaviyo indispensable for Shopify merchants. (Exact birth year remains publicly undisclosed).
Sources
This profile does not yet cite a source specific to Ed Hallen. 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.)