[Hiring] Frontend Engineer @Primer.io

Role Description

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 impact of your work in production, use metrics and dashboards to catch issues proactively, and take full ownership when things need to be fixed.
• Hold a high quality bar for your own code and raise concerns when you see things in the codebase that don't meet it.
• Contribute to incident response when it matters — taking the lead, driving to resolution, and keeping stakeholders informed throughout.
• Share knowledge actively and help raise the quality and confidence of the engineers around you.

Qualifications

• Solid frontend engineering experience, with a track record of independently delivering production-grade work across the full lifecycle.
• Extensive experience with Typescript and ideally web components.
• Comfortable taking on a project, scoping it, planning the architecture, and seeing it through without needing to be directed at each stage.
• Strong understanding of how to build accessible, performant, maintainable UI at scale — ideally in a context where quality directly affects end users or downstream integrations.
• Able to contribute meaningfully to architecture discussions and articulate trade-offs clearly.
• Writes clean, well-tested code that peers would consider high quality — and holds yourself to that standard consistently.
• Understands the user and business context behind the work, not just the technical brief.
• Communicates clearly and directly, especially in async-first environments.

Nice to have:

• Experience building SDKs, embeddable components, or developer-facing tooling.
• Familiarity with payments, checkout flows, or high-availability frontend systems.

Our interview process

• 30 minute call with a Talent Partner
• 60 minute interview with an Engineering Manager
• 90 minute coding interview in Python
• 90 minute system design interview
• 60 minute final stage values-alignment interview

Benefits

• We are fully remote and globally distributed; and have been since day one
• Competitive share options
• Uncapped holiday, with 25 days minimum to be taken
• Co-working space access
• Workations & Company Retreat
• The best equipment for your role
• £500 towards your home office setup
• Generous learning budget
• Private Medical Insurance
• A broad set of additional perks and benefits (depending on location)