Design System Engineer - React & TypeScript in West London

Design Systems/Component Libraries & Accessibility

Permanent | Hybrid (Office-first, 4 days/week) | London HQ

£90k per annum + Benefits

We are proud to be supporting the growth of a pioneering product company transforming how small businesses interact with payment and operational technologies. As part of their mission to build a suite of seamless, user-focused applications, they are looking for a Design System Engineer to help scale their customer-facing app ecosystem.

This role will sit within a growing Customer Apps function - responsible for everything the end-user sees and touches. From payment device management and transactions to restaurant operations and loyalty schemes, this is a central team that shapes the user experience across multiple products.

We are looking for someone who sits at the intersection of design and engineering: a frontend specialist with a passion for component libraries, clean APIs, accessibility, and collaborative problem-solving with designers.

• Translate UX/UI designs into well-structured, reusable components using modern frontend technologies.
• Design and build component APIs in React and TypeScript, with an eye for quality and scalability. Testing components would also be best placed with this engineer using React Testing Library.
• Champion and embed web accessibility best practices (WCAG, ARIA, screen readers, etc.)
• Create detailed documentation and usage guidance for component libraries and design systems
• Partner closely with product designers to define and evolve consistent design patterns
• Participate in code reviews, architectural discussions, and contribute to frontend engineering culture
• Mentor colleagues in design system principles and advocate for design consistency across teams

• Expert knowledge of React and TypeScript
• Experience with CSS-in-JS libraries like Vanilla Extract, Emotion, or Styled Components.
• Proven track record contributing to centralised design systems or component libraries.
• Deep understanding of modern frontend architecture (state management, hooks, component patterns).
• Proficiency in crafting responsive and accessible UI components.
• Strong knowledge of web accessibility standards and experience using screen readers for a solid understanding of their behaviour (JAWS, NVDA OR VoiceOver).
• Testing experience with tools such as Jest, React Testing Library, Playwright, or Cypress.
• Familiarity with CI/CD, version control (Git), and semantic versioning.
• Experience documenting components using Storybook or similar tools and eventually training other developers on the design systems' usage.
• Excellent communication skills and the ability to collaborate across design and product teams.

• Experience with design tokens and tools like Style Dictionary or Supernova
• Familiarity with Figma or Sketch
• Exposure to visual regression testing tools (Chromatic, Percy)
• Experience with Next.js and knowledge of GraphQL APIs

This is a hybrid role, with a strong emphasis on in-office collaboration (4 days a week). The company believes the best ideas come from working together in person - with quiet zones for deep focus, collaboration spaces for big ideas, and social hubs for staying connected. This is a non-negotiable so this is ideally a role for those who value in-person collaboration.

The team is built on three core values:

• Curious - a love of learning and problem-solving
• Relentless - driven to improve and deliver, even through challenges
• Customer-Obsessed - committed to creating great experiences for every user

If this sounds like your kind of environment and you are ready to make an impact through design-led engineering, we would love to hear from you.

Interested? Apply via PCR Digital today to speak with our team about this opportunity. We are proud to support inclusive, accessible recruitment processes and can make adjustments on request.