London-based Primer has secured €86.2 million ($100 million) in Series C funding to accelerate the development of its AI-driven payments infrastructure platform and strengthen its international expansion.
The round was led by Sofina, with participation from Peak XV Partners and existing investors including Balderton Capital, Accel, ICONIQ Capital, Tencent, and Speedinvest.
The latest financing brings Primer’s total funding to approximately €146.6 million ($170 million).
Building A Unified Layer For Payments Infrastructure
Founded in 2020 by former executives from Braintree and PayPal, Primer has developed a unified payments infrastructure platform designed to simplify payment operations for enterprise finance teams.
The company focuses on reducing the complexity created by fragmented payment systems, processors, fraud tools, and acquirers that often operate separately across large organisations.
The company says this fragmentation limits visibility into transaction data and creates growing challenges as businesses increasingly integrate AI into financial operations.
To address this, the company built a centralised infrastructure layer covering the full payments lifecycle, capturing hundreds of data points across each transaction and consolidating operational workflows into a single system.
Its customers include companies such as GetYourGuide, Dialpad, and Printful.
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Expanding AI Capabilities
Primer is also expanding its AI functionality through a product called Primer Companion, which helps businesses analyse payment data, optimise transaction performance, and identify operational inefficiencies.
The company says the platform is evolving toward a more autonomous system capable of running optimisation experiments and executing payment adjustments automatically within predefined business parameters.
According to Gabriel Le Roux, CEO and co-founder of Primer, the next generation of enterprise payments infrastructure will increasingly depend on AI-driven decision-making.
“In the coming years, AI systems will influence nearly every payment decision inside large organisations,” Le Roux said.
“But AI can only deliver accurate outcomes if it operates on complete and contextual payment data. Fragmented infrastructure creates fragmented intelligence, which ultimately leads to poor decisions. Our focus is building the infrastructure layer that solves this problem.”
Growing International Presence
Primer says the United States now represents around 20% of its revenue base, with the company aiming to further expand its North American operations over the coming years.
The startup plans to hire up to 50 additional employees as part of its next growth phase while continuing to scale its enterprise payments platform internationally.
About Primer
Primer is a UK-based fintech company building unified payments infrastructure for enterprise businesses. Founded in 2020, the company enables organisations to manage payment processing, fraud prevention, optimisation, and transaction data through a single platform designed for modern AI-driven financial operations.
