About
Farhan Ur Rehman is an engineer who previously worked at Meta on the Instagram Reels recommendation team and studied Statistics at the University of Waterloo.
Founder at DefiniteYC S26
Intro paths
YC
Farhan went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Ankit Gupta, General Partner at Y Combinator — the partner who ran Definite's batch and knows the company first-hand. YC profile ↗
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In turn, Farhan can intro founders to Definite's investors below.
Definite's investors · 1
Co-founders at Definite
MA
Mazin Al-AniFounder
GS
Gurshabd Singh VaraichFounder
Experience
- Definite (YC S26)Co-Foundercurrent2026 — presentSan Francisco Bay Area
- MetaSoftware Engineer2025Menlo Park, California, United States
- AutoTrader.caData Scientist2025Toronto, Ontario, Canada
- SensoSoftware Engineer2024Toronto, Ontario, Canada
- MalleumSoftware Engineer / Hacker2023Ottawa, Ontario, Canada
- CribifySoftware Engineer2022Toronto, Ontario, Canada
- Deux FractalesSoftware Engineer2020
Skills & more
Python (Programming Language)2HTML52Cascading Style Sheets (CSS)2JavaScript2Java1Django1Node.js1MongoDB1
From Farhan's professional profile.
Frequently asked questions
- Who is Farhan Ur Rehman?
- Farhan Ur Rehman is an engineer who previously worked at Meta on the Instagram Reels recommendation team and studied Statistics at the University of Waterloo.
- Where does Farhan Ur Rehman work?
- Farhan Ur Rehman is Founder of Definite.
- What companies did Farhan Ur Rehman found?
- Farhan Ur Rehman founded Definite.
- Where did Farhan Ur Rehman go to school?
- Farhan Ur Rehman studied at University of Waterloo (Bachelors of Mathematics, Statistics); Y Combinator.
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
Y Combinator mafia4,716
Also came through, then founded or led a company.
Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyDarius "Bubs" MonsefS19Founded Sightbox +3Matthew ScholzFounded Oisin Biotechnologies +3
+ 4,709 more
University of Waterloo mafia200
Also came through, then founded or led a company.
Apoorva MehtaBAScFounded InstacartZach WaterfieldComputer EngineeringFounded Zettlor +1Peter CarresciaBMathFounded GoConfirm +1Eric BlondeelDoctor of Philosophy - PhDFounded Samos Insurance +1Oleg KostourHonours Bachelor of Architectural StudiesFounded AtlasGrid +1Anton KrutianskyBachelor of Applied Science (B.A.Sc.)Founded AtlasGrid +1
+ 193 more
Same school
Also attended University of Waterloo424
Chamath PalihapitiyaFounder & CEO of Social CapitalApoorva MehtaFounder of Instacart; founder of Cloud Health SystemsAchintya ChaudhariInvestor at LightbankKarim GillaniGeneral Partner at Luge CapitalRohan MongaInvestment Associate at Luge CapitalAndrew MiklasGeneral Partner at Y Combinator
+ 418 more
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyArhaan A.Deeptech Fellow at Clear VenturesMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports Ventures
+ 1,994 more
Shared employers
Also worked at Definite (YC S26)2
Also worked at Meta316
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
+ 310 more
Also worked at AutoTrader.ca4
Also worked at Senso7
Adrian MendozaGeneral Partner / Founder at Mendoza VenturesSenofer MendozaGeneral Partner / Founder at Mendoza VenturesAdam KerrSenior Partner at Mendoza VenturesMike MortensenAdvisory Partner at StratMindsChris J. AlbinsonGeneral Partner at BreakawayGrowth FundSaroop BharwaniFounder at Senso
+ 1 more