About
Lewis Hemens previously served as CTO at Dataform before its acquisition, followed by a role as Google Engineering Manager in Data Analytics through 2024. He has expertise in data, AI, and machine learning.
Founder at DataformYC W18
Intro paths
YC
Lewis went through Y Combinator (Winter 2018) — any YC alum in your network can reach them through the YC community.
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In turn, Lewis can intro founders to Dataform's investors below.
Dataform's investors · 3
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Co-founders at Dataform
GH
Guillaume-Henri HuonFounder
Experience
- StealthBuildingcurrent2025 — presentLondon Area, United Kingdom
- GoogleSenior Staff Software Engineer2024 — 2025Greater London, England, United Kingdom
- GoogleEngineering Manager2020 — 2024London, England, United Kingdom
- dataform.coCo-founder & CTO2018 — 2020London, United Kingdom
- GoogleEngineering Manager2014 — 2017London, United Kingdom
- GoogleSoftware Engineer2010 — 2014
Skills & more
GWT3SecurityWeb Applications5Google App EngineTesting1Guice1Machine Learning2Software Design1Scalability1Algorithms2Java9Unix2
+7 more
CSSEclipseJavaScriptGitLinuxMapReduceMySQLFrom Lewis's professional profile.
Frequently asked questions
- Who is Lewis Hemens?
- Lewis Hemens previously served as CTO at Dataform before its acquisition, followed by a role as Google Engineering Manager in Data Analytics through 2024. He has expertise in data, AI, and machine learning.
- Where does Lewis Hemens work?
- Lewis Hemens is Founder of Dataform.
- What companies did Lewis Hemens found?
- Lewis Hemens founded Dataform.
- Where did Lewis Hemens go to school?
- Lewis Hemens studied at Y Combinator; University of Cambridge (Computer 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 Cambridge mafia256
Also came through, then founded or led a company.
Stewart ButterfieldMPhilFounded Flickr +1Demis HassabisBAFounded Google Deepmind +2Immad AkhundMaster of Arts (M.A.)Founded Clickpass +2Inaki BerenguerPhDFounded InfiniteWatch +2Harish AgarwalMaster of Philosophy - MPhilFounded Nori +2Nikola MrkšićDoctor of Philosophy (Ph.D.)Founded Poly +2
+ 249 more
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 Cambridge893
Stewart ButterfieldCo-founder of Slack and FlickrDemis HassabisCo-founder & CEO of Google DeepMindNiko BonatsosVerdict Capital founder and pre-consensus investor formerly at General CatalystGeorgia StevensonInvestor at Index VenturesHannah SealInvestor at Index VenturesLeah von SiemensPartner at Manta Ray Ventures
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+ 887 more
Shared employers
Also worked at Stealth124
Tobi CokerDeal Partner at Felicis VenturesSusana RojasInvestor at Index VenturesCasber WangOperating Partner at Sapphire VenturesOlivier GrindaVenture Partner at FJ LabsZachary GinsburgVenture Partner, Calm Ventures at GaingelsArtia MoghbelInvestor at Draft Ventures Llc
+ 118 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
