Find your path to William
694 people in our graph share verified history with William — schools, employers, funds. One of them is your warm intro.
Kike MirallesunlockedWilliam: together at McKinsey & Company (2019–2021)
×11William: together at McKinsey & Company
About
William Fairbairn held the UK General Manager role at Agicap, a European CFO software platform, where he expanded the team significantly. He has prior experience as a consultant in McKinsey's technology practice and founded and exited a bootstrapped B2B SaaS business.
Founder, CEO at ZalosYC F25
Intro paths
YC
William went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Tom Blomfield, Monzo and GoCardless co-founder; Y Combinator partner on leave and Anthropic compute-team member. — the partner who ran Zalos's batch and knows the company first-hand. YC profile ↗
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In turn, William can intro founders to Zalos's investors below.
Zalos's investors · 6
Co-founders at Zalos
HH
Hung HoangFounder, CTO
Experience
- Zalos (YC F25)Cofoundercurrent2025 — presentLondon
- AgicapUKI General Manager2023 — 2024
- McKinsey & CompanyEngagement Manager2019 — 2023London, United Kingdom
- KearneyAssociate2015 — 2019London, United Kingdom
- FabrikCo-Founder2016 — 2018Cambridge, England, United Kingdom
- HowCloudFounder2013 — 2014University of Warwick
- Warwick Finance SocietiesPresident2013 — 2014University of Warwick
- The Prince's TrustProgrammes & Development2014London
- Barclays Investment BankInvestment Banking2013London
Skills & more
Finance17Investment Banking27Economics33Mergers & Acquisitions13Data Analysis9Asset Management4Valuation6Microsoft Excel8Analysis21
From William's professional profile.
Frequently asked questions
- Who is William Fairbairn?
- William Fairbairn held the UK General Manager role at Agicap, a European CFO software platform, where he expanded the team significantly. He has prior experience as a consultant in McKinsey's technology practice and founded and exited a bootstrapped B2B SaaS business.
- Where does William Fairbairn work?
- William Fairbairn is Founder, CEO of Zalos.
- What companies did William Fairbairn found?
- William Fairbairn founded Zalos.
- Where did William Fairbairn go to school?
- William Fairbairn studied at University of Cambridge (Master of Philosophy (MPhil), Development Economics and Politics); University of Warwick (BSc Economics); King's College School Wimbledon.
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianPartnerFounded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Paradigm +1
+ 10,223 more
McKinsey & Company mafia736
Also came through, then founded or led a company.
Elad GilConsultantFounded Brain Co. +1Mike SpeiserAssociateFounded Pure StorageFabrice GrindaConsultantFounded FJ labsTony XuBusiness AnalystFounded DoorDashAlexandre ProtAssociateFounded Smartven +1Jagmeet LambaSenior Strategy ConsultantFounded Certa +3
+ 729 more
University of Cambridge mafia589
Also came through, then founded or led a company.
Stewart ButterfieldMPhilFounded Flickr +1Demis HassabisBAFounded Google Deepmind +2C. Giovanni TraversoMBFounded Teal Bio +4Immad AkhundMaster of Arts (M.A.)Founded Mercury Technologies, Inc. +3Inaki BerenguerMasterFounded InfiniteWatch +2Harish AgarwalMaster of Philosophy - MPhilFounded Nori +2
+ 582 more
University of Warwick mafia72
Also came through, then founded or led a company.
Sean MoriartyFounded Saatchiart +2Tal BrownBScFounded Zone7 Technologies Inc. +1Tommaso TombaBachelor of Science - BSc Economics (First Class Hons.)Founded Moons +1Kiiru MuhoyaBachelor of Science (BSc)Founded Fingo Holdings +1Ross TaylorBachelor of Science (BSc)Founded Atlas Metrics +1Tom WatsonBSc Hons with Intercalated YearFounded Hubble +1
+ 65 more
Same school
Also attended University of Cambridge1,491
Stewart ButterfieldCo-founder of Slack and FlickrDemis HassabisCo-founder & CEO of Google DeepMindNiko BonatsosFounder and Managing Partner of VerdictGeorgia StevensonInvestor at Index VenturesHannah SealInvestor at Index VenturesLeah von SiemensPartner at Manta Ray Ventures
+ 1,485 more
Also attended University of Warwick246
MariaInvestor at InvestinorChen Yang SiaGeneral Counsel at Golden Gate VenturesMichael CheungInvestment at Makers FundChen YangAdvisor at Golden Gate VenturesAllison CaraganExecutive Business Partner at CapitalGJudy TsaiInvestor at CapitalG
+ 240 more
Also attended King's College School Wimbledon23
David ‘DC’ CollierChief Technology Officer, RIKAI Labs at Orbit StartupsAndrew MacklinGeneral Counsel at Apex GroupFreddie DodgeDirector at GP BullhoundMarcusGlobal Head of Regulatory Strategy at SENTINEL GLOBALLiam AhnPrincipal at Samsung VenturesWill BrooksFounder and Director at Portfolio Ventures
+ 17 more
Shared employers
Also worked at Zalos (YC F25)1
Also worked at Agicap5
Also worked at McKinsey & Company2,000
Ann Miura-KoCo-founding Partner at FloodgateJeremy LiewPartner at Lightspeed Venture PartnersMike SpeiserManaging Director at Sutter Hill VenturesJeremy LevinePartner at Bessemer Venture PartnersFabrice GrindaCo-founder & Managing Partner at FJ LabsJeppe RindomCo-founder & CEO of Pleo
+ 1,994 more
Also worked at The Prince's Trust10
Andrew ElderDeputy Managing Partner at AlbionVCHoward ThompsonRegional Executive at UKSECaspar LeePartner at Creator VenturesRobert TimmsDirector at Earth CapitalKieran DalyHead of Market Building at Social Investment ScotlandJeevs MahilPeople + Talent at Octopus Ventures
+ 4 more