Frontend Developer (React/Next.js)

November 15, 2026

Senior

London Area, United Kingdom

Description

Join a collaborative digital team building, scaling and maintaining robust web applications for a range of clients. The role focuses on delivering modern, scalable and maintainable applications while contributing to technical discussions and continuous improvement.

Responsibilities

Work with developers, testers, designers and project managers to deliver client solutions
Develop and maintain modern web applications using React and Next.js
Write clean, well-structured and maintainable code following agreed standards
Build and maintain automated tests to support application quality and reliability
Investigate technical issues and work with colleagues to resolve them
Contribute ideas and recommendations during technical discussions
Break down development work into manageable tasks and contribute to estimates
Work with QA and developers to improve testing and increase automation
Review colleagues’ code and use feedback to improve your own work
Attend client and project meetings when required and communicate progress clearly
Use AI-assisted tools for coding, debugging, testing, documentation and research
Review, understand and test AI-generated code before using it

Requirements

Commercial experience developing and maintaining web applications within multidisciplinary development teams
Strong commercial experience building scalable web applications with React and Next.js
Solid understanding of object-oriented programming, including SOLID principles and maintainable reusable code
Experience writing automated tests with modern JavaScript or TypeScript testing frameworks
Strong understanding of modern frontend development with React, Next.js, TypeScript, JavaScript, HTML and CSS
Good understanding of HTML, CSS and responsive web development
Experience using Git within structured development and deployment processes
Familiarity with CI/CD pipelines and automated deployment practices
Strong problem-solving skills and ability to investigate technical issues independently
Experience using AI tools for software development, testing, documentation or research
Understanding how to review and validate AI-generated code for quality, security, accuracy and maintainability
Good communication skills and ability to work with technical and non-technical colleagues
Experience with Docker and containerised development environments is desirable
Knowledge of cloud platforms such as AWS, Azure or similar is desirable
Experience developing and consuming RESTful APIs is desirable
Experience optimising application performance, including database queries and application code, is desirable
Experience with modern JavaScript tooling and frontend build processes is desirable
Interest in emerging AI technologies and their responsible application to software development is desirable
Experience with React Native or other mobile application frameworks is desirable