About the role

We are seeking an experienced and highly skilled Senior Frontend Software Engineer to play a key role in the evolution of our Arc Design System, driving the development of scalable, accessible, and high-performance frontend platforms that power our digital products.
In this role, you will architect and build enterprise-grade reusable UI components, establish frontend best practices, and shape the technical direction of our Design System. Working closely with UX/UI Designers, Product Managers, Architects, and Engineering teams, you will transform design concepts into robust, production-ready solutions while ensuring consistency, accessibility, performance, and exceptional developer experience across multiple applications.
As a senior member of the engineering team, you will provide technical leadership through architectural decision-making, mentoring, code reviews, and the establishment of engineering standards. You will champion modern frontend technologies, Design System governance, accessibility (WCAG), performance optimisation, and AI-enabled development practices to continuously improve our frontend platform.This is an excellent opportunity for an experienced frontend engineer who is passionate about building scalable platforms, influencing engineering strategy, and delivering reusable solutions that enable product teams to develop high-quality user experiences efficiently and consistently.

What you’ll be doing

•    Architecting scalable, resilient, and high-performance frontend platforms, developer tooling, and user experiences that support long-term business and engineering goals.
•    Use problem-solving and analytical skills, with the ability to evaluate trade-offs, make strategic architectural decisions, and drive technical direction across complex systems.
•    Proven ability to mentor engineers, lead technical discussions, conduct thoughtful code reviews, and foster a culture of collaboration, engineering excellence, and continuous learning.
•    Exhibit strong sense of ownership and accountability, driving initiatives from technical design through implementation, deployment, and long-term maintenance while ensuring high standards of quality and reliability.
•    Adapt emerging frontend technologies, AI-driven development, developer experience (DX), and modern engineering practices, with the ability to assess and introduce innovations that deliver measurable value.
•    Build maintainable, reusable, accessible, secure, and thoroughly tested software, while establishing best practices, engineering standards, and scalable patterns across teams.

Essential Skills / Experience

•    Deep expertise in React, Next.js, TypeScript, and modern frontend architecture, including SSR/SSG, React Server Components, micro-frontends, state management strategies, and scalable application design.
•    Proven experience architecting, governing, and evolving enterprise-grade Design Systems, reusable component libraries, and frontend platforms with strong emphasis on maintainability, consistency, and developer experience.
•    Hands-on experience designing and integrating AI-powered applications using Model Context Protocol (MCP) servers, LLM APIs, agent workflows, tool orchestration, 

Desirable Skills / Experience

•    Strong understanding of design token architecture, token governance, and cross-platform token management using industry-standard platforms to ensure seamless collaboration between design and engineering.
•    Expert knowledge of web accessibility (WCAG 2.2 AA), semantic HTML, inclusive design principles, responsive and adaptive UI development, Core Web Vitals, frontend performance optimization, rendering strategies, and advanced debugging/profiling techniques.

Our Package

Tailored benefits make a real difference. That’s why we offer a comprehensive range to support your growth, wellbeing, and everyday life. You can design the package to suit you and your lifestyle. Your core benefits include:

•    10% on target annual bonus
•    Access to an online private GP 24/7 for you and your immediate family
•    Market-leading paid carers leave with up to 2 weeks off
•    Equalized maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay
•    Discounted EE and BT products, including mobile and broadband
•    Market leading Pension scheme – 5% from you and 10% from us
•    Holiday purchase scheme
You can select additional benefits, including healthcare, dental, gym memberships and more when you’re ready. Ready to connect for good and help shape the future? Apply now.