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Zalos

YC F25

London, GB · Founded 2025 · 10 employees · Hiring · 11 known investors

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Zalos builds computer agents that automate repetitive finance operations tasks like payroll, reconciliation, and form processing within existing enterprise ERP and accounting systems, without requiring system replacement.

AI & Machine LearningEnterprise SoftwareFintechSaaSFinanceEnterpriseBillingAI AssistantUnited KingdomEurope

Founders & leadership· Y Combinator alumni (F25)

Zalos was founded in 2025 by William Fairbairn and Hung Hoang.

WFWilliam Fairbairn
William FairbairnCofounderWilliam 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.
HHHung Hoang
Hung HoangCo-FounderHung Hoang worked on payment products at Apple, including Buy Now Pay Later offerings, and has experience with AI initiatives at Apple and roles at Twin.so and Gitguardian.

Investors · 11

Activant Capitallisted by Activant CapitalNew York · $3M – $40M

How we know: Activant Capital's portfolio page · Not right? Tell us

Cohen Circlelisted by Cohen CircleNew York

How we know: globenewswire.com · Y Combinator's founder network · Not right? Tell us

Sterling Roadlisted by Sterling RoadSan Francisco · $25K – $150K

How we know: Sterling Road's portfolio page · a partner's Signal profile · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · a partner's Signal profile · open dataset · 5k.vc investor directory · Not right? Tell us

20VCreportedLondon · $250K – $5M

How we know: funding news · thenextweb.com · Y Combinator's founder network · Not right? Tell us

Andreessen HorowitzreportedMenlo Park · $500K – $50M

How we know: a partner's Signal profile · Not right? Tell us

James Beshara FundreportedVenice

How we know: a partner's Signal profile · Y Combinator's founder network · Not right? Tell us

SAV (Scale Asia Ventures)reportedPalo Alto

How we know: Y Combinator's founder network · Not right? Tell us

Stride VCreportedLondon · $317.5K

How we know: a partner's Signal profile · Not right? Tell us

Also in the syndicate · 1

14 Peakslead

Funding

SEC filings, press & company announcements

$7.2M disclosed across 2 rounds · 2026

Source: company announcements and press reports — follow each round's link for the claim.

The YC application· Fall 2025 batch

Alumni Q&A

What is the core problem you are solving? Why is this a big problem? What made you decide to work on it?
The founders note that finance operations teams spend substantial time on repetitive, rule-based tasks such as categorization, reconciliation, and form filling, which contributes to limited financial visibility, wasted staff time, and human errors and delays. They attribute the lack of automation to legacy ERPs with limited AI, authentication-protected portals, and multiple finance systems that don't integrate. Zalos addresses this with computer agents that log into existing ERP, accounting, and CFO tools and run these processes from instructions like screen recordings or PDFs, handling steps such as 2FA and Captcha.

Summarized from the founders' answers on their Y Combinator profile.

Images

Zalos photo

Related companies · 8

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LazarusLazarus AI researches, develops, and deploys artificial intelligence technology into operational environments. The company focuses on building AI solutions that address complex decision-making problems across industries where they can create meaningful positive impact.
LagoLago is an open-source billing platform that enables companies to build and manage their billing infrastructure with transparency and control. The platform serves tech companies that need flexible billing solutions without the limitations of third-party black-box systems.
Health HarborHealth Harbor provides AI-powered benefits verification by automating phone calls to insurance companies to retrieve and validate patient insurance information. The service handles IVR navigation, hold times, and agent interactions for healthcare providers and insurers.
LassoLasso Security offers an AI security platform that discovers, assesses, and protects AI agents and applications across their lifecycle, addressing risks like Shadow AI, prompt manipulation, and guardrail bypasses. It is aimed at enterprises seeking visibility and governance over the AI tools and agents their employees build and deploy.
KableKable provides billing, invoicing, analytics, and authentication infrastructure for API businesses, enabling developers to integrate these capabilities with minimal setup. The platform helps API companies reduce engineering overhead and implement flexible billing models.
Quill BillsQuill Bills automates revenue cycle management for independent healthcare practices, handling insurance claims processing, eligibility verification, denial management, and patient billing through AI agents and EHR integration. The platform reduces manual work in coding, claim submission, payment posting, and collections.

Companies working in the same space as Zalos.

Legal entities · 1

corporate structure
Zalos Inc.

In the news

Zalos Raises $3.6M in Seed Fundingfinsmes.com · Mar 2026Zalos Raises $3.6 Million in Seed Roundthesaasnews.com · Mar 2026London's Zalos raises €3.1 million Seed to bring AI agents to enterprise finance workflows | EU-Startupseu-startups.com · Mar 2026Zalos raises $3.6M to build Computer Agents that operate finance systems the way humans doglobenewswire.com · Mar 2026⚡ZALOS: Computer Agents for Finance Operationsycombinator.com · Sep 2025

Frequently asked questions

What does Zalos do?
Zalos builds computer agents that automate repetitive finance operations tasks like payroll, reconciliation, and form processing within existing enterprise ERP and accounting systems, without requiring system replacement.
Who founded Zalos?
Zalos was founded by William Fairbairn, Hung Hoang in 2025.
Who are Zalos's investors?
Zalos's investors include 14Peaks Capital, Activant Capital, Cohen Circle, Sterling Road, Y Combinator, 20VC, Andreessen Horowitz, James Beshara Fund and 2 more.
How much funding has Zalos raised?
Zalos has disclosed $7.2M raised across 2 rounds.
Where is Zalos headquartered?
Zalos is headquartered in London, GB.