Software Engineer – Frontend Focus

Role Overview

• Deliver product work end-to-end: discovery, technical design, implementation, rollout, iteration.
• Build high-quality, user-centric interfaces: accessible, performant, consistent.
• Take ownership of frontend architecture and patterns (state management, data fetching, routing, error handling, forms) to improve quality and speed sustainably.
• Collaborate on backend implementation when needed (services, endpoints, integrations) to ship team priorities.
• Improve our design system usage and help scale UI consistency across flows.
• Raise the bar on engineering quality through reviews, pairing, and pragmatic technical leadership.
• A key part of the role is ensuring the end-to-end experience is high quality. You’ll work with the team to design and evolve APIs that are: predictable and consistent, optimized for product usage (latency, pagination, partial updates), resilient (validation, error semantics, backwards compatibility), and easy to consume from the frontend.

Requirements

• Strong experience building modern web apps with React (or similar) and TypeScript.
• Proven ability to deliver full-stack work, prioritizing the most valuable outcomes for the team.
• Strong product sense and attention to UX details (edge cases, empty states, error states, loading states).
• Ability to influence frontend quality and help others level up (patterns, reviews, examples, shared components).
• Comfortable collaborating with PM/Design and across engineering.
• Nice to have Experience with design systems/component libraries at scale.
• Frontend observability experience (error tracking, monitoring, performance metrics, web vitals).
• Experience in complex B2B workflows (permissions, audits, multi-step flows).
• Experience in improving the reliability and maintainability of a mature codebase.

Tech Stack

• React
• TypeScript

Benefits

• Flexibility: We believe it is key to produce your best work and to be fulfilled. We therefore offer the possibility to work away from our main offices, within France/UK/Spain; as well as abroad for a defined period. Further requirements may apply depending on the role and your overall experience.
• Learning & Development: In PayFit we have a great learning platform where you can learn new skills every day with the support of our company. We also have English language courses to improve your business communication vocabulary and get to the next level.
• Career Development: We want you to progress and be free to choose which direction you want to grow. There are also opportunities for internal moves.
• Health promotion: Egym Wellpass subscription with preferential rates.
• Health insurance: Mutuelle Henner (60% covered by PayFit).
• Transportation: 50% covered for your public transportation card for those living within Ile de France. A budget to travel to the office for those who live outside of it.
• Meals: A restaurant card with our partner Swile (9€ per workday).
• Home office budget: 150€ per year to help you get set up in the best conditions.
• A MacBook is our standard working tool.
• Parental support: 20 weeks of maternity leave covered by PayFit and 4 weeks leave for the second parent.
• Time off: 25 days of holidays + RTT days (depending on the contract).
• Disability Inclusion: All of our positions are open to any person living with a disability. To guarantee equal treatment and opportunities, we will take, based on individual needs, appropriate measures to adapt the work conditions of PayFiters with disabilities, and if needed also during the recruitment process. Please let us know what you need and we will do our best to accommodate!