Software Engineer III, Frontend

Responsibilities

• Own frontend projects end-to-end, from scoping through to production, across payment surfaces and merchant-facing tooling.
• Lead architectural decisions on frontend systems, contributing to design sessions and producing RFCs and ADRs.
• Build UI that is composable, performant, and adaptable.
• Monitor production impact using metrics and dashboards to proactively catch and resolve issues.
• Maintain a high quality bar for code and contribute to incident response when necessary.
• Share knowledge actively to raise the quality and confidence of the engineering team.

Requirements

• Solid frontend engineering experience with a track record of delivering production-grade work.
• Extensive experience with TypeScript and knowledge of web components.
• Ability to scope, plan, and execute complex projects independently.
• Strong understanding of building accessible, performant, and maintainable UI at scale.
• Ability to contribute to architecture discussions and clearly articulate technical trade-offs.
• Experience writing clean, well-tested code and communicating effectively in async-first environments.

Benefits

• Fully remote and globally distributed work environment.
• Competitive share options.
• Uncapped holiday (with a 25-day minimum).
• Co-working space access and workations.
• Home office setup allowance (£500).
• Generous learning budget and private medical insurance.

About the Company

Primer is the unified infrastructure for global payments. We provide finance and payments teams with the visibility and control needed to reduce complexity and improve performance through a single platform. Backed by leading investors like Accel, Tencent, and Balderton, we are building the essential payments layer for the world's most successful companies.