Software Engineer, Frontend

An Introduction to Primer

Primer is the unified infrastructure for global payments. We give finance and payments teams the visibility and control to reduce complexity, improve performance, and capture more revenue - all from a single platform.

Backed by Sofina, Peak XV Partners, ICONIQ, Tencent, Accel, and Balderton, we're building the payments layer the world's best companies rely on.

Watch our showcase >

Read up on our $100m Series C

Learn more about our culture >

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 products.

- Monitor the im...