Senior Frontend Software Engineer - Web

We are seeking a skilled and motivated Senior Frontend Software Engineer to join our Group Technology team in Milton Keynes. In this role, you will design and build the front end of our brand websites, migrating our portfolio onto a new headless content platform (Contentstack).
You will work closely with the technology and marketing teams to deliver reusable component libraries that can serve our many brands from a shared codebase, supporting a rolling schedule of brand go-lives.
We offer a hybrid working arrangement with 2 days per week in our Milton Keynes office.

Key Responsibilities:

Consume content from our headless CMS (Contentstack) via its APIs, agreeing content models and API contracts
Build and maintain a reusable, themeable component library and page templates that serve multiple brands from a shared codebase
Design and develop commercial/enterprise web applications, owning the architecture of the shared front-end platform
Translate brand design systems and designs into accessible, responsive and high performing front-end code
Deliver to defined standards for Core Web Vitals, WCAG accessibility and technical SEO, including structured data to support search and AI-driven discovery
Provide technical leadership for the front end, including setting coding standards, supporting code reviews and mentoring other engineers
Ensure application performance, quality, and responsiveness
Support rolling brand go-lives, including theme onboarding, cross-browser and device testing, cutover support and post-launch fixes
Experience and

Skills Required:

Essential:
Strong expertise in JavaScript/Type Script and modern web architectures, specifically React and server-side rendering or static site generation (e.g. Next.js, Node.js)
Proven experience designing and delivering enterprise-scale front-end applications
Strong HTML5 and CSS skills, including responsive design and design-token based theming
Experience building component libraries or design systems
Strong knowledge of WCAG accessibility standards and web performance optimisation
Experience consuming REST or GraphQL APIs, ideally from a headless CMS
Developing and maintaining multiple connected software solutions
Skilled in software testing methodologies including TDD, and front-end test tooling

Experience with Git-based workflows, CI/CD pipelines and cloud hosting, ideally Azure

Experience of working with AI in a software engineering team
Highly Desirable:

Experience with a headless CMS such as Contentstack, Contentful or similar
Knowledge of technical SEO, structured data and search/AI visibility optimisation
Awareness of .NET and C# back-end services

Experience of large website migration or multi-brand, multi-site programmes

Experience with Storybook and visual regression testing

Experience with Azure and infrastructure as code (e.g. Terraform)

What We Offer
Aviva Digicare + workplace / Car leasing and cycle to work scheme
Colleague discount scheme / Perks at work / Gym discounts
Life assurance / Workplace pension scheme
Collaborative agile environment
Ongoing professional development

Our  Commitment to Inclusion
Connells Group is an equal opportunities employer committed to a diverse, inclusive and authentic workplace. We welcome applications from all suitably qualified candidates regardless of sex, race, disability, age, sexual orientation, gender identity, religion or belief, marital status, or pregnancy and maternity.