About
Frederick Widjaja previously worked as a software engineer at Facebook, contributing to products including Blood Donations and Messenger Rooms. He studied computer science and statistics at Harvard College and is now building Whiz, a fintech platform for teenagers in Indonesia.
Founder at WhizYC W22
Intro paths
YC
Frederick went through Y Combinator (Winter 2022) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Gustaf Alstromer — the partner who ran Whiz's batch and knows the company first-hand. YC profile ↗
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In turn, Frederick can intro founders to Whiz's investors below.
Whiz's investors · 1
Co-founders at Whiz
DS
Dominic SumarliFounder
AL
Agnes LieFounder
Experience
- Applied LabsFounding Engineercurrent2025 — presentNew York, New York, United States
- Whiz (YC W22)Co-Founder, CTO2022 — 2024Jakarta, Indonesia
- FacebookSenior Software Engineer2017 — 2021San Francisco Bay Area
- FacebookSoftware Engineer2016San Francisco Bay Area
- GoogleSoftware Engineer2015San Francisco Bay Area
- SquareSoftware Engineer2014San Francisco Bay Area
Skills & more
React.jsReact NativeGraphQLAmazon Web Services (AWS)Redux.jsJavaScriptC (Programming Language)C++JavaPython (Programming Language)PHPSQL
+6 more
RDatabasesFull-Stack DevelopmentAndroid DevelopmentMachine LearningOCamlLanguages Chinese · English · Indonesian
From Frederick's professional profile.
Frequently asked questions
- Who is Frederick Widjaja?
- Frederick Widjaja previously worked as a software engineer at Facebook, contributing to products including Blood Donations and Messenger Rooms. He studied computer science and statistics at Harvard College and is now building Whiz, a fintech platform for teenagers in Indonesia.
- Where does Frederick Widjaja work?
- Frederick Widjaja is Founder of Whiz.
- What companies did Frederick Widjaja found?
- Frederick Widjaja founded Whiz.
- Where did Frederick Widjaja go to school?
- Frederick Widjaja studied at Harvard University (Bachelor of Arts - BA, Computer Science and Statistics); Jakarta Intercultural School (High School Diploma).
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
Jakarta Intercultural School mafia8
Also came through, then founded or led a company.
James RichardsFounded TeleborderCarl ThongHigh School DiplomaFounded BankingonChandni ChainaniHigh SchoolFounded SekiloBenjamin FinchFounded MultiplierChristina SuriadjajaHigh SchoolFounded TravelioVictor Ramli KwanHigh School/Secondary Diplomas and CertificatesFounded Taphomes
+ 1 more
Same school
Also attended Harvard University1,967
Ron ConwayFounder of SV AngelAlfred LinPartner at Sequoia CapitalChris DixonFounder & Managing Partner of a16z crypto at Andreessen HorowitzSarah TavelVenture Partner at BenchmarkDanny RimerPartner at Index VenturesLaela SturdyManaging Partner at CapitalG
+ 1,961 more
Also attended Jakarta Intercultural School23
Christal NgAssociate at Golden Gate VenturesRaunaq NanwaniVice President at Openspace VenturesNimesh ModakInvestor at BURNT ISLAND VENTURESRishi TapariaCo-founder and General Partner at Garuda VenturesJames RichardsCo-founder and Venture Partner at Garuda VenturesRJ BalmaterInvestor at Saison Capital
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+ 17 more
Shared employers
Also worked at Facebook599
Peter ThielCo-founder & Partner at Founders FundChamath PalihapitiyaFounder & CEO of Social CapitalJim BreyerFounder & CEO of Breyer CapitalDavid SzeAdvisory Partner at GreylockReed HastingsCo-founder of NetflixAndy FangCo-founder & CTO of DoorDash
+ 593 more
Also worked at Google2,000
Elad 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 VenturesHunter WalkCo-founder & Partner at Homebrew
+ 1,994 more
Also worked at Square97
Keith RaboisManaging Director at Khosla VenturesDelian AsparouhovPartner at Founders Fund and co-founder of VardaTony XuCo-founder & CEO of DoorDashClay RobbinsForward Deployed Partner at Slow VenturesSaket SrivastavaInvestor at Foundation CapitalJustin LiuVice President at Sapphire Ventures
+ 91 more