2x founder

Merlin Kafka

CEO @ Rex (YC S26) | AI for order to cash operations

Co-founder

Rex· Summer 2026 🇺🇸 San Francisco, California, United States

in LinkedIn 𝕏 @merlinkafka

2026Co-founder· Rex.inc

Founder · since 2016

Company

Rex.inc

Role

Co-founder & CEO

current

Stage

—

no public source

Raised

—

no public source

Based

—

Founder / co-founder — the company's markEmployee / research role

Source: LinkedIn work history

Profile coverage5 of 7 · missing posts, contact

Rex

AI Operations Partner for Enterprise Order to Cash

Summer 2026

Experience

Career

Rex.inc
Co-founder
Co-founder & CEO · 2026 – Present
2026
Sequence
CPO (AR & Quote to cash) · London Area, United Kingdom · 2025
2025
Sequence
Head of Product (AR & Quote to cash) · Greater London, England, United Kingdom · 2022 – 2025
2022
Tessian
Product Manager (Enterprise AI) · London Area, United Kingdom · 2019 – 2022
2019
Legal Sphere
Product Manager · Cambridge, England, United Kingdom · 2018 – 2019
2018
Institute for Manufacturing (IfM), University of Cambridge
Industrial Consultant · Cambridge, United Kingdom · 2017 – 2018
2017
Re-system.co
Founder
Founder · Glasgow, Scotland, United Kingdom · 2016 – 2018
2016
Coco Chocolatier
Project Manager · Edinburgh, United Kingdom · 2017
2017
LEAP Technology
Venture Competition · Copenhagen, Capital Region, Denmark · 2016
2016
Allianz Insurance
Intern · Shanghai City, China · 2012 – 2013
2012

Bio

Merlin is the Founder and CEO of Rex, the AI partner for enterprise order-to-cash. He spent 4 years as CPO at Sequence (a16z-backed), an order-to-cash platform where he grew the company to millions in ARR and hundreds of customers. He has deep domain expertise in order to cash and accounts receivable workflows -- the exact space Rex is transforming with AI. Previously a PM at Tessian (Sequoia-backed, acquired in 2023). Studied Industrial Engineering in Cambridge and Product Design in Glasgow.