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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.
CEO at ZalosYC F25
Intro paths
William went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.
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 ↗
In turn, William can intro founders to Zalos's investors below.
Zalos's investors · 10
Co-founders at Zalos
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 CEO of Zalos.
- What companies did William Fairbairn found?
- William Fairbairn founded Zalos.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
McKinsey & Company mafia937
Also came through, then founded or led a company.
University of Cambridge mafia725
Also came through, then founded or led a company.
Kearney mafia100
Also came through, then founded or led a company.
University of Warwick mafia100
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Zalos's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights