Fundraising Fox

Jack Brown

Founder

Founder at Lark

San Francisco, California, United States

FoundedLark · YC

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

YC

Jack went through Y Combinator (Summer 2025) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Brad Flora, Backing expeditions into the future — 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

King River CapitalSydneyY CombinatorSan Francisco · $500K checks · since 2025

Co-founders at Lark

VDVijit Dhingra
Vijit DhingraFounder

Experience

  1. LarkFoundercurrent2025 — presentSan Francisco, California, United States
  2. StripeSoftware Engineer2024 — 2025
  3. TrustworthyLead Software Engineer2021 — 2023
  4. Xplor TechnologiesStaff Backend Engineer2020 — 2021Greater Boston
  5. LISNRBackend Engineer2018 — 2020Cincinnati, OH
  6. VybeFounder2018Cincinnati, Ohio, United States
  7. NasdaqFull Stack Engineer Intern2018Boston, Massachusetts
  8. NasdaqData Science Intern2017Boston, Massachusetts

Skills & more

Amazon ECS1MySQL1Docker Products1REST APIs2Node.js1Amazon Web Services (AWS)2AWS LambdaTerraformMongoDB1React.jsReact Native1JavaScript
+12 morePostgreSQLSQLPythonmongoDBC++JavaHTMLGitNetwork SecurityTypeScriptFront-End DevelopmentDevOps

From Jack's professional profile.

Frequently asked questions

Who is Jack Brown?
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.
Where does Jack Brown work?
Jack Brown is Founder of Lark.
What companies did Jack Brown found?
Jack Brown founded Lark.
Where did Jack Brown go to school?
Jack Brown studied at University of Illinois Urbana-Champaign (Physics).

Founder mafias

Y Combinator mafia8,773

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1

+ 8,766 more

University of Illinois Urbana-Champaign mafia146

Also came through, then founded or led a company.

Max LevchinBSFounded PayPal +1Luke NosekBSFounded PayPalAnsuman SatpathyPhilosophyFounded Santa Ana Bio +2DeVaris BrownB.S.Founded Super Heroic +2Harish AgarwalB.S.Founded Nori +2Amitt MahajanBSFounded Rare Bits +1

+ 139 more

Stripe mafia91

Also came through, then founded or led a company.

Matt HuangBoard MemberFounded HotspotsPatrick CollisonCo-founder & CEOFounded AuctomaticGreg BrockmanFounding Engineer, then first CTOFounded OpenAIDaniela AmodeiEarly employee — Risk ManagerFounded AnthropicArvid LunnemarkSoftware EngineeringFounded CursorParker ConradMember Board of DirectorsFounded Zenefits +1

+ 84 more

LISNR mafia2

Also came through, then founded or led a company.

Blair GarrouVenture Investor & Board MemberFounded Surgeaccelerator

Same school

Also attended University of Illinois Urbana-Champaign421

Max LevchinCo-founder of PayPal; founder, chairman & CEO of Affirm; partner at SciFi VCLuke NosekCo-founder of PayPal; co-founder of GigafundSundeep PeechuGeneral Partner at Felicis VenturesDeep NisharInvestment Team at General CatalystPrashant ShahPartner at Monta Vista CapitalNoorPartner at Clear Ventures

+ 415 more

Shared employers

Also worked at Lark1

Vijit DhingraFounder at Lark

Also worked at Stripe186

Hemant TanejaCEO & Managing Director of General CatalystMatt HuangCo-founder and Managing Partner at ParadigmLuciana LixandruPartner at Sequoia CapitalPatrick CollisonCo-founder & CEO of StripeJohn CollisonCo-founder & President of StripeGreg BrockmanCo-founder & President of OpenAI

+ 180 more

Also worked at LISNR5

Sean KwiatVice President, Investments at CincyTechBlair GarrouCo-founder & General Partner at Mercury FundJoshua B. SiegelGeneral Partner at Rubicon Venture CapitalAshley DeWaltManaging Partner at CollectivYelitsa Jean-CharlesExecutive Officer, Director at Healthy Roots Dolls

Also worked at Vybe2

Aspen SanezHead of Marketing at Blockchain SpaceFabien DevosCofounder/CTO at Vybe