About
Jack Brown co-founded Lark. Previously, he worked at Stripe where he developed usage-based billing systems, and led engineering teams at fast-growing startups building developer tools infrastructure.
Founder at LarkYC S25
Intro paths
Jack went through Y Combinator (Summer 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Brad Flora, General Partner at Y Combinator — the partner who ran Lark's batch and knows the company first-hand. YC profile ↗
In turn, Jack can intro founders to Lark's investors below.
Lark's investors · 2
Co-founders at Lark
Experience
- LarkFoundercurrent2025 — presentSan Francisco, California, United States
- StripeSoftware Engineer2024 — 2025
- TrustworthyLead Software Engineer2021 — 2023
- Xplor TechnologiesStaff Backend Engineer2020 — 2021Greater Boston
- LISNRBackend Engineer2018 — 2020Cincinnati, OH
- VybeFounder2018Cincinnati, Ohio, United States
- NasdaqFull Stack Engineer Intern2018Boston, Massachusetts
- NasdaqData Science Intern2017Boston, Massachusetts
Education
- University of Illinois Urbana-ChampaignPhysics2016 — 2018
Skills & more
+12 more
PostgreSQLSQLPythonmongoDBC++JavaHTMLGitNetwork SecurityTypeScriptFront-End DevelopmentDevOpsFrom Jack's professional profile.
Founder mafias
Y Combinator mafia8,668
Also came through, then founded or led a company.
+ 8,661 more
University of Illinois Urbana-Champaign mafia131
Also came through, then founded or led a company.
+ 124 more
Stripe mafia83
Also came through, then founded or led a company.
+ 76 more
Same school
Also attended University of Illinois Urbana-Champaign388
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+ 382 more
Shared employers
Also worked at Lark1
Also worked at Stripe166
+ 160 more
