About
Rishab Luthra is a co-founder of Sponge (YC W26) and previously worked in the crypto division at Stripe.
Founder at SpongeYC W26
Intro paths
YC
Rishab went through Y Combinator (Winter 2026) — 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 Sponge's batch and knows the company first-hand. YC profile ↗
→
In turn, Rishab can intro founders to Sponge's investors below.
Sponge's investors · 2
Co-founders at Sponge
EZ
Eric ZhangFounder
JC
Jae ChoiFounder
Experience
- Sponge (YC W26)Co-Foundercurrent2026 — presentSan Francisco, California, United States
- StripeSoftware Engineer2022 — 2025San Francisco Bay Area
- FacebookSoftware Engineer Intern2021
- GoogleSoftware Engineering Intern2020
- ScholarMeSoftware Engineer2019 — 2020Toronto, Ontario, Canada
- SmartcarSoftware Engineering Intern2019Mountain View, California
- aUTorontoDeveloper - Object Detection Team2019Greater Toronto Area, Canada
- Osprey SecuritySoftware Engineer Intern2017 — 2018
Skills & more
Software Development5Go5Machine LearningDevOpsEndpoint SecurityComputer SciencePython4Computer SecurityJavaScriptLinuxSQLNoSQL
+6 more
RubyReactAngularJSVue.jsReact NativeTensorFlowLanguages English · French
From Rishab's professional profile.
Frequently asked questions
- Who is Rishab Luthra?
- Rishab Luthra is a co-founder of Sponge (YC W26) and previously worked in the crypto division at Stripe.
- Where does Rishab Luthra work?
- Rishab Luthra is Founder of Sponge.
- What companies did Rishab Luthra found?
- Rishab Luthra founded Sponge.
- Where did Rishab Luthra go to school?
- Rishab Luthra studied at Y Combinator; University of Toronto (Bachelor of Science - BS, Computer Science).
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 Toronto mafia101
Also came through, then founded or led a company.
Ilya SutskeverPhDFounded Safe Superintelligence +1Nick FrosstBachelor's of ScienceFounded CohereJeffrey KarpPhDFounded Tissium +3Shvet JainMAScFounded Panther +1Kiran GolluM.Sc.Founded Oodle +1Alex LevyFounded Atmo +1
+ 94 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
Smartcar mafia4
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports VenturesCollin WallaceGeneral Partner at Lobby Capital
+ 1,994 more
Also attended University of Toronto341
Ilya SutskeverCo-founder of OpenAI; co-founder & CEO of Safe SuperintelligenceNick FrosstCo-founder of CohereYasmin RazaviInvestor at Spark CapitalImran BashirFounding Partner, Chief Operating Officer at Extreme Venture PartnersKarim GillaniGeneral Partner at Luge CapitalAndrew MiklasGeneral Partner at Y Combinator
+ 335 more
Shared employers
Also worked at Sponge (YC W26)2
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 Google1,715
Ron ConwayFounder of SV AngelElad GilSolo general partner investing through Gil CapitalKai-Fu LeeChairman of Sinovation Ventures and CEO of 01.AIBrian SingermanCo-founder of GPx; Partner Emeritus at Founders FundJess LeePartner and Chief Product Officer at Sequoia CapitalTomasz TunguzFounder & General Partner at Theory Ventures
+ 1,709 more
