About
Dennis Sun holds a degree in evolutionary and developmental biology from Harvard and a PhD from UC Berkeley. He previously served as Chief of Staff at a biotech company, where he oversaw software teams, product development, and scientific partnerships.
Founder at Ditto BiosciencesYC W26
Intro paths
YC
Dennis went through Y Combinator (Winter 2026) β 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 β the partner who ran Ditto Biosciences's batch and knows the company first-hand. YC profile β
β
In turn, Dennis can intro founders to Ditto Biosciences's investors below.
Ditto Biosciences's investors Β· 1
Co-founders at Ditto Biosciences
AB
Adair BorgesFounder
EW
Emily WeissFounder
Experience
- Ditto Bio (YC W26)Cofoundercurrent2025 β presentSan Francisco Bay Area
- Arcadia ScienceChief of Staff2024 β 2025Berkeley, California, United States
- Arcadia ScienceProduct Manager2023 β 2024Berkeley, California, United States
- Arcadia ScienceScientist2022 β 2023Berkeley, California, United States
- UC BerkeleyNational Science Foundation Graduate Research Fellow2015 β 2022Berkeley, California, United States
- Harvard UniversityUndergraduate Researcher2013 β 2015Cambridge, Massachusetts, United States
Skills & more
Engineering1Design1TimelinesProject LeadershipProduct DesignCross-functional Team LeadershipProduct DevelopmentRecruitingPresentationsStrategic InitiativesWritten CommunicationKey Performance Indicators
+12 more
Cross-functional CollaborationsStakeholder ManagementTechnical WritingStartupsProgram ManagementDashboardsGoogle DriveQualitative ResearchCreative IdeationTeam CoordinationInterpersonal SkillsCreative Problem SolvingLanguages Chinese Β· Japanese
From Dennis's professional profile.
Frequently asked questions
- Who is Dennis Sun?
- Dennis Sun holds a degree in evolutionary and developmental biology from Harvard and a PhD from UC Berkeley. He previously served as Chief of Staff at a biotech company, where he oversaw software teams, product development, and scientific partnerships.
- Where does Dennis Sun work?
- Dennis Sun is Founder of Ditto Biosciences.
- What companies did Dennis Sun found?
- Dennis Sun founded Ditto Biosciences.
- Where did Dennis Sun go to school?
- Dennis Sun studied at Harvard University (Bachelor of Arts and Science, Human Developmental and Regenerative Biology); University of California, Berkeley (Doctor of Philosophy (PhD), Molecular and Cell Biology); Y Combinator.
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
Y Combinator mafia5,145
Also came through, then founded or led a company.
Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyGleb ChuvpiloAlumFounded Pager +4IanFounded Apex Technology +3
+ 5,138 more
University of California, Berkeley mafia789
Also came through, then founded or led a company.
Steve WozniakBSFounded AppleTony XuB.S.Founded DoorDashAravind SrinivasDoctor of Philosophy - PhDFounded PerplexityAli GhodsiPost-docFounded DatabricksRyan PetersenBAFounded FlexportAbraham BachrachBachelor of Science (BS)Founded Skydio
+ 782 more
Same school
Also attended Harvard University1,941
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
+ 1,935 more
Also attended University of California, Berkeley1,776
Byron DeeterPartner at Bessemer Venture PartnersSteve WozniakCo-founder of AppleTony XuCo-founder & CEO of DoorDashAravind SrinivasCo-founder & CEO of Perplexity AIAli GhodsiCo-founder & CEO of DatabricksRyan PetersenFounder & CEO of Flexport
+ 1,770 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 VenturesCollin WallaceGeneral Partner at Lobby Capital
+ 1,994 more
Shared employers
Also worked at Ditto Bio (YC W26)2
Also worked at Arcadia Science8
Saran DaviesInvestor at Moonfire VenturesRebecca (Becky) PferdehirtPartner at Andreessen HorowitzNish BhatCo-Founder and General Partner at Carbon SiliconSeemay ChouCo-Founder & President β Foundation at Astera InstitutePrachee AvasthiHead of Open Science at Astera InstituteChristopher BulowFounder at ResistanceBio
+ 2 more
Also worked at UC Berkeley382
Ali GhodsiCo-founder & CEO of DatabricksRaquel UrtasunFounder & CEO of WaabiArhaan A.Deeptech Fellow at Clear VenturesKevin Wijayaγ€γ³γγγ·γ’ζ³δΊΊδ»£θ‘¨ (Indonesia Office Representative) at CyberAgent CapitalPaul JennyBoard Chair at CincyTechAndrea van ElsasInvestor at Third Rock Ventures
+ 376 more
Also worked at Harvard University353
Nathan BlecharczykCo-founder & CSO of AirbnbRyan SheaCo-founder of Blockstack (Stacks)Rachel HansenInvestor at Index VenturesDave MunichielloInvestor at GV (Google Ventures)Nicole GaudelliEntrepreneur in Residence at GV (Google Ventures)Logan HilleLife Sciences Analyst at CincyTech
+ 347 more