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Web Developer
£35,000 - 45,000
Friar Street 30-31, Swindon
£35,000 - 45,000
Requirements
Must:
- Practical experience maintaining ASP.NET WebForms UIs (pages/controls, ViewState, server controls) and authoring ASP.NET MVC/Razor views.
- Strong React skills (TypeScript preferred): components, hooks, routing, state, forms, and error boundaries.
- Solid web fundamentals: HTML5, CSS3 (Flexbox/Grid), responsive design, JavaScript/TypeScript (ES2020+), and cross-browser compatibility.
- Hands-on accessibility experience (WCAG-aligned).
- Performance-first mindset (Core Web Vitals): code splitting, lazy loading, and bundle analysis.
- Experience calling REST APIs securely from the browser, handling auth tokens/refresh, and robust error UX.
- Testing experience: Jest + React Testing Library for unit/integration; Playwright or Cypress for E2E.
- Familiarity with modern tooling (npm/yarn/pnpm, Vite/Webpack, ESLint/Prettier, type-checks).
- Comfort in shaping UI requirements with designers and product managers, and aligning API contracts with backend teams.
- A degree in Computer Science/Engineering or equivalent practical experience is desirable; a portfolio or GitHub is also recommended.
Responsibilities
- Maintain and enhance an existing .NET WebForms UI while driving an incremental migration to ASP.NET MVC/Razor and React components.
- Build and refine React features (components, hooks, routing, forms, error boundaries, and user flows).
- Consume ASP.NET Core APIs from the front end, focusing on data fetching, caching strategies, optimistic updates, and resilient error handling.
- Create and maintain a reusable component library/design system; manage CSS architecture (SCSS modules or utility CSS), responsive layouts, and theming.
- Ensure accessibility (WCAG-aligned) and semantic HTML, including keyboard navigation and ARIA patterns.
- Optimize front-end performance with techniques such as code splitting, lazy loading, asset/image optimization, and Lighthouse remediation.
- Implement client-side authentication flows (e.g., OIDC), protected routes, and session state.
- Write and maintain front-end tests (unit/integration and E2E).
- Own front-end tooling and overall developer experience.
- Collaborate with backend engineers on API contracts and UX acceptance criteria alongside designers and project managers.
Description
We are a growing B2B SaaS company based in Swindon, developing a commercially successful platform tailored for enterprise customers. We employ modern .NET technologies coupled with a React front end, emphasizing robustness, performance, and accessibility. This role is part of a small yet expanding in-house engineering team where your contributions will make a tangible impact. We offer a hybrid working arrangement, requiring a minimum of 3 office days per week, as well as a full-time permanent position with a salary range of £35,000 to £45,000. If you are interested in joining us, we encourage you to apply now!
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The company with most openings is Experis as they are hiring for 86 different JavaScript Developer jobs in the UK. They are probably quite committed to find good JavaScript Developers.