Zack Leman
FounderCo-Founder & CTO at Jarmin
San Francisco, California, United States
FoundedJarmin · YC
About
Zack Leman is Co-Founder and CTO at Jarmin.ai. He previously held staff engineer and senior software engineering roles at Meta's Superintelligence Labs and Amazon Web Services, and co-founded (catch) health where he served as CTO; he also worked as a founding engineer at Artera. He holds a double major in neuroscience and computer science from Bowdoin College and completed the Business Bridge Program at Tuck School of Business at Dartmouth.
Co-Founder & CTO at JarminYC F25
Intro paths
YC
Zack went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Nicolas Dessaigne, General Partner at Y Combinator — the partner who ran Jarmin's batch and knows the company first-hand. YC profile ↗
→
In turn, Zack can intro founders to Jarmin's investors below.
Jarmin's investors · 1
Co-founders at Jarmin
CB
Chalmers BrownCo-Founder & CEO
SH
Shirsendu HalderCo-Founder & Head of ML
Experience
- JarminCo-Founder & CTOcurrent2025 — presentSan Francisco, California, United States
- MetaStaff Software Engineer @ Meta SuperIntelligence Labs2024 — 2025Menlo Park, California, United States
- (catch) healthCo-Founder & Principal Engineer2022 — 2024
- Amazon Web Services (AWS)Senior Software Development Engineer2021 — 2022San Francisco Bay Area
- Well Health Inc.Staff Backend Software Engineer2019 — 2021San Francisco Bay Area
- Well Health Inc.Senior Backend Software Engineering Lead2018 — 2019San Francisco Bay Area
- Well Health Inc.Backend Software Engineer2016 — 2018
- Zackery LemanFreelance Software Engineer2015 — 2018
- Make SchooliOS Instructor2015Sunnyvale, California, United States
- Bowdoin College Neuroscience DepartmentResearch Fellow2013 — 2014Brunswick, Maine
Skills & more
PostgreSQL1JavaScript3Java2HTML 52CSS2Terraform2Adobe Creative Suite1Node.js1MongoDB1docker1SQLNoSQL
+12 more
Python (Programming Language)Amazon Web Services (AWS)ElasticsearchsqlDockermongoLambdaAWS LambdaSoftware DevelopmentCloud ComputingResearchStatistical Data AnalysisFrom Zack's professional profile.
Frequently asked questions
- Who is Zack Leman?
- Zack Leman is Co-Founder and CTO at Jarmin.ai. He previously held staff engineer and senior software engineering roles at Meta's Superintelligence Labs and Amazon Web Services, and co-founded (catch) health where he served as CTO; he also worked as a founding engineer at Artera. He holds a double major in neuroscience and computer science from Bowdoin College and completed the Business Bridge Program at Tuck School of Business at Dartmouth.
- Where does Zack Leman work?
- Zack Leman is Co-Founder & CTO of Jarmin.
- What companies did Zack Leman found?
- Zack Leman founded Jarmin.
- Where did Zack Leman go to school?
- Zack Leman studied at Bowdoin College (Bachelor’s Degree, Neuroscience and Computer Science); The Tuck School of Business at Dartmouth (Business Bridge Program).
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
The Tuck School of Business at Dartmouth mafia35
Also came through, then founded or led a company.
Jeffrey DeFlavio, MDMaster of Business Administration (MBA)Founded Affect Therapeutics +5Errik AndersonMBAFounded Adimab +4Frank StonebanksBusiness DiplomaFounded Johnson & Johnson +1Samantha TruexMBAFounded Upstream Bio +1Aakhil FardeenMBAFounded Lish +1Jeong-Suh ChoiMBAFounded 株式会社MEAL FORWARD +1
+ 28 more
Bowdoin College mafia9
Also came through, then founded or led a company.
Reed HastingsBAFounded InterPositiveTed PowerFounded Versa +1Andrew PalmerBAFounded TamrCharlie WarrenA.B.Founded ConvexRachel MackBachelor of ArtsFounded Digital MatterMartina WelkhoffBAFounded Zealyst
+ 2 more
Make School mafia7
Also came through, then founded or led a company.
Casey SpencerComputer ScienceFounded ItsWare +1Benjamin EnczSoftware Engineer & All-Around Early Startup EmployeeFounded AshbyChapman SnowdenConsultantFounded GoBuild (fka Brick)Jorrie BrettinLead Instructor (iOS)Founded KilvinAlexandru TurcanuBachelor's in Applied Computer ScienceFounded Tee Time TommyShalin ShahSoftware EngineerFounded Hyper
Same school
Also attended Bowdoin College55
Reed HastingsCo-founder of NetflixHolly MaloneyInvestment Team at General CatalystKen ChenaultInvestment Team at General CatalystKevin MunnellyInvestor at Third Rock VenturesEmily PawlakVice President at Volition CapitalJohn HarthorneFounder & Managing Director at Two Lanterns Venture Partners
+ 49 more
Also attended The Tuck School of Business at Dartmouth174
John McCulloughInvestor at OpenView Venture PartnersCarley PhillipsPrincipal at GreycroftM.G. ThibautFormer Chief Financial Officer at DroneDeploy at Scale Venture PartnersLiam DonohueInvestor at .406 VenturesGraham BrooksPartner at .406 VenturesJoanna Skoler GilmanChief Marketing and Communications Officer at .406 Ventures
+ 168 more
Shared employers
Also worked at Jarmin2
Also worked at Meta304
Nat FriedmanCo-lead of Meta Superintelligence Labs; co-founder of NFDGDaniel GrossMeta Superintelligence Labs; co-founder of NFDG and Safe SuperintelligenceDrew HoustonCo-founder & CEO of DropboxGabriel PereyraCo-founder & President of HarveyTinaInvestments & Portfolio Services Team Member at Clear VenturesMike ArpaiaComputer scientist working on machine learning and data infrastructure
+ 298 more
Also worked at Amazon Web Services (AWS)270
Nancy WangInvestor at Felicis VenturesJon TurowVenture Partner at Madrona Venture GroupEric AndersonPartner at Scale Venture PartnersKeerthi NalabotuInvestor at True VenturesKen HowardVice President of Technology Services at Flare Capital PartnersEliya ElonInvestor at Notable Capital
+ 264 more
