Inderpal Singh
FounderFounder at Substrate
San Francisco, California, United States
FoundedSubstrate · YC
About
Inderpal Singh led special projects teams at AngelList and HotelTonight before founding Substrate, which develops artificial intelligence for medical billing operations.
Founder at SubstrateYC S24
Intro paths
YC
Inderpal went through Y Combinator (Summer 2024) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Garry Tan, President & CEO of Y Combinator — the partner who ran Substrate's batch and knows the company first-hand. YC profile ↗
→
In turn, Inderpal can intro founders to Substrate's investors below.
Substrate's investors · 6
Founders FundSan Francisco · $500K – $5M checks · since 2025General CatalystSan Francisco · $30M checks · since 2025In-Q-TelTysons · $100K – $2.5M checks · since 2025Long Journey VenturesSan Francisco · $100K – $1M checks · since 2025Valor Equity PartnersChicago · since 2025Y CombinatorSan Francisco · $500K checks · since 2024
.png)
Co-founders at Substrate
AO
Ayo OmojolaFounder
Experience
- Substrate (YC S24)Foundercurrent2024 — present
- Various StartupsConsultant / Investor / Advisorcurrent2016 — present
- AngelListProduct Lead, Special Projects2019 — 2023San Francisco Bay Area
- HotelTonightSenior Director of Special Projects2014 — 2016San Francisco Bay Area
- CoasterFounder2010 — 2014San Francisco
- Infinium Capital ManagementSenior Software Engineer2005 — 2010Chicago
Skills & more
PHP2MySQL5Trading Systems1Strategy8Strategic Planning1Leadership4Software Development2Product Development20Entrepreneurship48Start-ups37Mobile Devices42Product Management8
+12 more
E-commerceBusiness StrategyBusiness DevelopmentStrategic PartnershipsCompetitive AnalysisMarket ResearchOnline MarketingMobile ApplicationsProject ManagementUser Experience DesignBrand DevelopmentFundraisingFrom Inderpal's professional profile.
Frequently asked questions
- Who is Inderpal Singh?
- Inderpal Singh led special projects teams at AngelList and HotelTonight before founding Substrate, which develops artificial intelligence for medical billing operations.
- Where does Inderpal Singh work?
- Inderpal Singh is Founder of Substrate.
- What companies did Inderpal Singh found?
- Inderpal Singh founded Substrate.
- Where did Inderpal Singh go to school?
- Inderpal Singh studied at Y Combinator; University of Illinois Urbana-Champaign (Bachelor of Science, 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 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
AngelList mafia24
Also came through, then founded or led a company.
Oleg RogynskyyAngel InvestorFounded UFORCE Acquired +2Guillaume LuccisanoY Combinator Demo Day Fund ManagerFounded Yuma AI +2Harish AgarwalTeam LeadFounded Nori +2Jonathan AbramsEarly investor and advisorFounded Jabrams +1James LinHead of Candidate DataFounded Crunchyroll +1Drew WilsonDesignFounded Opacity +1
+ 17 more
Hotel Tonight mafia5
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 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 Substrate (YC S24)1
Also worked at AngelList70
Cyan BanisterCo-founder & General Partner at Long Journey VenturesWesley ChanInvestor at Felicis VenturesHelen MinEarly-stage investor and marketing advisor to startupsMehul KumarInvestor at FJ LabsBrendan BakerPartner at Rackhouse Venture Management LpLee JacobsEntrepreneur, investor, and cofounder of Edelweiss
+ 64 more
Also worked at HotelTonight14
Jeff RichardsInvestor at GGV CapitalTom MendozaInvestor at EQT VenturesKen LovelessPartner, Co-Founder at Founders Circle CapitalRick LewisGeneral Partner at US Venture PartnersJim WilliamsSenior Advisor at Frazier Life SciencesJared SimonSenior Advisor (Co-Founder HotelTonight) at Grishin Robotics
+ 8 more