Frontend Developer

Experis UK; Greater London; On-site; GBP 75,000 - 110,000; Full time

Job summary

Experis UK is seeking a Senior Frontend Developer to own a modern React and TypeScript application, influence architecture, and deliver accessible, scalable features. You will work with GraphQL, AWS Amplify, AppSync, and Vite, shaping engineering standards and collaborating with Product, Design, and Engineering teams.

The role emphasizes technical decision-making, high-quality code, and a strong user experience focus within a London-based, hybrid environment.

Qualifications

• Proficient in React and TypeScript for production-grade features.
• Experience with modern frontend architecture and design patterns.
• Familiar with build tools like Vite and frontend quality tooling.

Responsibilities

• Build and maintain React 18+ features in a TypeScript app.
• Design reusable components and scalable frontend architecture.
• Improve the build and development pipeline (Vite).
• Create responsive, accessible interfaces with CSS/Sass and component libraries.
• Integrate with GraphQL services, AWS Amplify, and AppSync.
• Implement i18n across the platform.
• Write tests with Vitest and Testing Library.
• Enhance performance and developer experience.
• Participate in code reviews and architectural discussions.
• Collaborate with Product, Design, and Engineering teams.

Skills

React

TypeScript

GraphQL

AWS Amplify

AppSync

i18n

Vitest

Testing Library

MSW

ESLint

CI/CD

Tools

Vite

Job description

Own the frontend. Influence architecture. Build exceptional user experiences.

We're looking for a talented Senior Frontend Developer to take ownership of a modern React and TypeScript application, helping shape its architecture while delivering high-quality, accessible, and scalable features.

This is an opportunity to play a key role in technical decision-making, improve engineering standards, and work with a modern technology stack that includes React, TypeScript, GraphQL, AWS Amplify, and AppSync.

What You'll Do

• Build and maintain production features in a React 18+ TypeScript application


• Design reusable components and scalable frontend architecture


• Enhance our Vite-based build and development pipeline


• Create responsive, accessible interfaces using Ant Design and SCSS


• Integrate with AWS Amplify, AppSync, and GraphQL services


• Implement internationalisation (i18n) across the platform


• Write high-quality tests using Vitest, Testing Library, and MSW


• Drive improvements in performance, maintainability, and developer experience


• Participate in code reviews, architecture discussions, and technical decision-making


• Collaborate closely with Product, Design, and Engineering teams

What We're Looking For

• Strong commercial experience with React and TypeScript


• Deep understanding of modern frontend architecture and design patterns


• Experience with Vite or similar build tools


• Strong CSS/Sass skills and experience with component libraries such as Ant Design or Material UI


• Experience building responsive, accessible web applications


• Working knowledge of GraphQL and AWS Amplify


• Experience implementing i18n in production applications


• Strong testing practices using Vitest, Jest, Testing Library, or similar


• Familiarity with ESLint, CI/CD workflows, and frontend quality tooling

Nice to Have

• AWS certifications


• Experience with AppSync


• Passion for improving developer experience and engineering standards

Why Join Us?

Modern tech stack and genuine technical ownership

Opportunity to shape architecture and engineering practices

Competitive salary and bonus scheme

Collaborative team focused on quality and innovation

Ready to make an impact?

• If you're a senior frontend engineer who enjoys building quality software, solving complex problems, and influencing technical direction, we'd love to hear from you.