Founder Profile
Valery Sizov
Last reviewed: October 2026 · By Swet Parvadiya
Who is Valery Sizov?
Valery Sizov is a founder of GitLab Inc., which was founded in 2011 with Dmitriy Zaporozhets and Sid Sijbrandij.
- Company founded
- GitLab Inc.
- Founded
- 2011
- Co-founders
- Dmitriy Zaporozhets and Sid Sijbrandij
Background
Software developer from Ukraine who actively contributed to the open-source GitLab project.
Founding Story
Valery Sizov was an early contributor to the open-source GitLab project originally created by Dmitriy Zaporozhets. He was formally recognized as a co-founder due to his massive early technical contributions to the core architecture before leaving the project. (Exact birth year remains publicly undisclosed).
Sources
This profile does not yet cite a source specific to Valery Sizov. The sources below document the company company rather than the person, so check them against the claims above.