Jacob Rosenberg
FounderFounder/CTO at LendUp
San Francisco, California, United States
FoundedLendUp · YC
About
Jacob Rosenberg is a Principal Software Engineer at Robinhood with over thirty years of experience developing scalable, global software applications. He has worked across industries including communications, gaming, social media, e-commerce, financial services and fintech, robotics, and cloud infrastructure, and has additional experience as a startup founder and investor.
Founder/CTO at LendUpYC W12
Intro paths
YC
Jacob went through Y Combinator (Winter 2012) — any YC alum in your network can reach them through the YC community.
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In turn, Jacob can intro founders to LendUp's investors below.
LendUp's investors · 5
Co-founders at LendUp
SO
Sasha OrloffFounder/CEO
Experience
- RobinhoodPrincipal Software Engineercurrent2025 — presentMenlo Park
- FathomAngel Investorcurrent2020 — present
- Nobell FoodsAdvisorcurrent2017 — present
- PuzzleAdvisorcurrent2019 — presentSan Francisco Bay Area
- BloomTechInvestorcurrent2017 — present
- Founders PledgePledgercurrent2016 — present
- CruisePrincipal Software Engineer2021 — 2025San Francisco, California, United States
- CruisePrincipal Software Engineer2020 — 2021San Francisco, California, United States
- Mission LaneAdvisor2019 — 2020San Francisco, California
- Mission LaneInterim CTO2019San Francisco Bay Area
- LendUpCo-founder and CTO2012 — 2018San Francisco Bay Area
- ZyngaArchitect - CTO, Zynga Social Messaging and Communications2010 — 2012
- ZyngaLead Developer - Zynga Network Products2009 — 2010
- YahooSr. Technical Yahoo! - Yahoo! Lifestyles2009San Francisco, California, United States
- YahooSr. Technical Yahoo! - Yahoo! Video/Jumpcut2007 — 2009San Francisco, California, United States
- YahooSr. Technical Yahoo! - Yahoo! Search2003 — 2007
- YahooTechnical Yahoo! - Yahoo! Auctions2001 — 2003Sunnyvale, California, United States
- YahooTechnical Intern1996 — 2001Sunnyvale, California
Skills & more
Web Development2Software Development6Memcached14Membase1CouchDBDistributed Systems16Scalability40Scalable Architecture1Scalable Web Applications1Web Applications12System Architecture1Big Data1
+12 more
Technical LeadershipMobile ApplicationsJavaPHPPythonRubyC++CMySQLPostgreSQLHadoopNoSQLFrom Jacob's professional profile.
Frequently asked questions
- Who is Jacob Rosenberg?
- Jacob Rosenberg is a Principal Software Engineer at Robinhood with over thirty years of experience developing scalable, global software applications. He has worked across industries including communications, gaming, social media, e-commerce, financial services and fintech, robotics, and cloud infrastructure, and has additional experience as a startup founder and investor.
- Where does Jacob Rosenberg work?
- Jacob Rosenberg is Founder/CTO of LendUp.
- What companies did Jacob Rosenberg found?
- Jacob Rosenberg founded LendUp.
- Where did Jacob Rosenberg go to school?
- Jacob Rosenberg studied at Rice University (Bachelor of Arts (B.A.), Computer Science); The Head-Royce School; The Bentley School.
Founder mafias
Y Combinator mafia9,496
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Hotspots
+ 9,489 more
Rice University mafia70
Also came through, then founded or led a company.
Brian ArmstrongBachelor’s DegreeFounded Coinbase +1Dan WallaceBSMEFounded Versa Vascular +2Chris GibsonBachelor of Arts (B.A.)Founded Recursion (NASDAQ: RXRX) +1Web SmithStudy: RussianFounded Mizzen+Main +1Jonathan BehrB.S.Founded Tilos Therapeutics +1Jeffrey DietrichBSFounded Rarebird +1
+ 63 more
Founders Pledge mafia39
Also came through, then founded or led a company.
Brent HobermanCo-FounderFounded Founders Keepers +2Fabian HeilemannAmbassador & Climate ChampionFounded Aenu +1Ferry HeilemannAmbassador & Climate ChampionFounded Aenu +1Magnus HambletonFounders Pledge MemberFounded Depict +1Benjamin GuentherMemberFounded Stylight +1Vishal ChatrathFounders Pledge MemberFounded Secondmind +1
+ 32 more
Cruise mafia38
Also came through, then founded or led a company.
Kyle VogtFounder/CEOFounded GM Cruise Holdings +2Daniel KanFounder/COOFounded GM Cruise Holdings +2Oliver CameronVP, ProductFounded Everyme +1Matthew DeitersDirector of Product & Technical OperationsFounded Assembly Made +1Sohrab HaghighatControls EngineerFounded Hestus, Inc. +1Richard HeSenior Software Engineer - ML PlatformFounded Openmart +1
+ 31 more
Zynga mafia37
Also came through, then founded or led a company.
Reid HoffmanBoard MemberFounded LinkedIn +2Robin ChanGeneral Manager, Asia Business OperationsFounded Operator +2Iansuperlabs (acquired) - Founder, Director of ProductFounded Apex Technology +2Amitt MahajanCo-Creator & Lead Developer - FarmVilleFounded Rare Bits +1Mohan ReddyCTO/Technology LeaderFounded SkyHive +1Sohail PrasadProduct Manager, MobileFounded D/XYZ +1
+ 30 more
Same school
Also attended Rice University185
Brian ArmstrongCo-founder & CEO of CoinbaseAbigail JohnsonPartner, Chief Operating Officer at Sapphire VenturesEdi DanalacheSenior Associate at Scale Venture PartnersJim BridenstineManaging Partner, Artemis Group at Cortado VenturesNicolette HoffmannSenior Associate at JMI EquityPatrick OkoraforDirector of Finance at Mercury Fund
+ 179 more
Shared employers
Also worked at Nobell Foods3
Also worked at Puzzle7
Hemant TanejaCEO & Managing Director of General CatalystNadia AsoyanVenture Partner at One Way VenturesJason KaliraPartner at The Westly GroupEmily WesterholdFinance Operations at a16z cryptoAinhoa MaizPrincipal at S32Lisa KleinsorgeVenture Partner at LifeX Ventures
+ 1 more
Also worked at Founders Pledge72
Rouven DresselhausInvestor at Cavalry VenturesStefan WalterInvestor at Cavalry VenturesNick FitzInvestor at Juniper Ventures Management, LlcGriff BohmInvestor at Juniper Ventures Management, LlcAndrew McLoughlinBrit in San Francisco; seed-stage venture capital investorDaniel DuboisInvestor at Side Door Ventures
+ 66 more
