Senior Software Engineer

November 15, 2026

Hybrid

Senior

London, United Kingdom

Indeed

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Mandatory office attendance
Background check required

Description

This senior engineering role focuses on building and scaling performant web applications, with technical ownership from design through delivery and support. The engineer will help shape frontend architecture and standards, collaborate across teams, and mentor junior colleagues.

Responsibilities

Design, build, and maintain production web applications in TypeScript, React, and JavaScript
Own features end to end — from technical design through release and ongoing support
Expand expertise beyond frontend by contributing to Java microservices or application development when needed
Apply AI development tools to accelerate delivery safely, scalably, and maintainably
Define effective AI development tool adoption practices for the team
Collaborate closely with product, design, and backend teams to create well-designed solutions
Maintain code quality through reviews, testing, and clear engineering standards
Mentor and support less experienced engineers, sharing knowledge and best practices
Evolve frontend architecture, tooling, and CI/CD processes
Identify and resolve application performance, accessibility, and stability issues

Requirements

Deep knowledge of TypeScript, React, and JavaScript, demonstrated by building complex web applications
Good understanding of modern frontend architecture, component design, and state management
Strong command of web development fundamentals: HTML, CSS, browser APIs, and responsive design
Experience integrating with RESTful APIs and/or GraphQL APIs
Experience with automated testing, including unit, integration, and end-to-end tests, as well as CI/CD pipelines
Good understanding of web application performance optimization and debugging
Willingness to grow in adjacent areas, such as Java microservices or application development; collaboration and mentoring skills
Additional experience with Java microservices or backend development, React Native, server-side rendering, Next.js or Remix, AI development tools, WCAG, design systems, component libraries, analytics, monitoring, or observability

Conditions

Full-time: 37.5 hours per week, Monday to Friday
Hybrid model with regular work from the office and home
Bonuses, up to 28 days of vacation plus public holidays and paid volunteering time
Pension plan, discounts, vouchers, training, and parental benefits available