Szymon Rybczak
FounderFounder at TesterArmy
San Francisco, California, United States
FoundedTesterArmy · YC
About
Szymon Rybczak is co-founder and CEO of TesterArmy. He has contributed to React Native and maintained open-source libraries, and previously worked on v0 iOS with Vercel.
Szymon Rybczak @szymonrybczak
couldn’t agree more i’ve heard so many times recently about teams wanting to build their own internal agentic QA platform, only to fail because it took too much time. https://t.co/aIebnalR11
Aug 2, 2026 · ♥ 28 · ⇄ 1
Szymon Rybczak @szymonrybczak
just saw someone who migrated their whole playwright test suite to TesterArmy we aim to build a platform that is agent-driven by default
Jul 31, 2026 · ♥ 31
Szymon Rybczak @szymonrybczak
markdown preview in @conductor_build is really beautiful https://t.co/UkbOLVZeAy
Jul 23, 2026 · ♥ 12
Founder at TesterArmyYC X26
Intro paths
Szymon went through Y Combinator (Spring 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Pete Koomen, General Partner at Y Combinator — the partner who ran TesterArmy's batch and knows the company first-hand. YC profile ↗
In turn, Szymon can intro founders to TesterArmy's investors below.
TesterArmy's investors · 1
Co-founders at TesterArmy
Experience
- TesterArmy (YC P26)Co-Founder & CEOcurrent2026 — presentRejon Zatoki San Francisco
- CallstackSenior React Native Developer2022 — 2026
- MyMusicReact Native Developer2021 — 2022
- LiveKidMobile Developer2021Cracow, Małopolskie, Poland
