Ravelin Technology

AI-native fraud prevention and payment optimization company using machine learning and graph networks to protect online merchants from payment fraud and abuse.

Ravelin Technology is an AI-native fraud prevention and payment optimization company founded in 2014 by a team of five. It builds machine-learning systems that detect payment fraud, account takeovers, refund abuse and marketplace partner fraud before losses occur, combining graph networks, supervised models and human-in-the-loop analytics. The company joined Worldpay in February 2025 and maintains offices in London, with staff distributed across five continents.

Its technical work spans several distinct domains: fraud detection at the transaction and account level, graph-based analysis of relationships between buyers, sellers and devices, payment optimization aimed at increasing acceptance rates without raising risk exposure, and the application of responsible AI principles to decision-making systems. The platform is aimed at online merchants and marketplaces, and customers include Deliveroo, Just Eat, Trainline, Spotify and KFC, spanning food delivery, rail ticketing, digital media and quick-service restaurants.

Ravelin describes its mission as eradicating fraud from the internet, and its stated focus is on supporting ambitious, fast-growing businesses. The engineering agenda combines model development with structured human review, and the company positions responsible AI as a core constraint on how its systems are designed and operated.