Frontend Engineer

AN INTRODUCTION TO PRIMER

We’re the world's first unified payment infrastructure, empowering businesses worldwide to unleash their payment potential. By choosing our platform, merchants can take control over their payment stack, create unique commerce experiences, accelerate their roadmap and increase payment success. We strive to make something complex, incredibly simple and intuitive. The world's top investors, including Accel, Balderton, Iconiq, and Tencent, have invested in Primer's vision to rebuild payments and commerce from the ground up.

Join us in shaping the future of payments and commerce.

Which team will you be joining?
You'll be joining the Acceptance team — the engineering domain responsible for the foundation of Primer's payment platform. Acceptance processes 10 million transactions a day across providers, markets, and payment methods. The team owns everything from the core payment infrastructure to the merchant-facing APIs, SDKs, and checkout experiences that sit on top of it.

Frontend at this level in Acceptance means working on surfaces that real merchants ship to their customers — composable checkout components, developer tooling, and the UI layer that makes a complex payments platform actually usable. The quality bar is high because the stakes are real.

You'll report to an Engineering Manager and work closely with backend engineers, product, and design across a team that values end-to-end ownership and engineers who care about what they build.

🔍 What will you be doing?

- Own frontend projects end-to-end — from scoping through to production — across Acceptance's payment surfaces, checkout components, and merchant-facing tooling.

- Lead architectural decisions on the frontend systems you work on, contributing to design sessions and producing RFCs and ADRs with minimal reliance on more senior engineers.

- Build UI that is composable, performant, and adaptable — payment experiences that merchants can configure and extend to fit their own ...