Senior React Frontend Developer

Job Title: Senior React Frontend Engineer

Duration: Initial 1 year contract
Workload: Full time hours
Setup: Freelance (Daily rate / Limited Company / Umbrella / Sole Trader)
Location: Remote

About the Role

We’re looking for a Senior React Frontend Engineer to help build high-performance, user-centric web applications using the latest in frontend technologies.

Key Responsibilities:

• Develop complex, user-facing features with React 19, TypeScript, and modern CSS.
• Collaborate with cross-functional teams to translate product concepts into performant UI.
• Drive code quality through reviews and best practices in accessibility, testing, and maintainability.
• Integrate APIs using tRPC, TanStack Router, and React Query.
• Champion responsive design and scalable styling using Tailwind and modern CSS techniques.
• Optimise performance through profiling, code-splitting, and frontend architecture patterns.

Must-Have Skills:

• 5+ years of frontend/fullstack engineering experience.
• 3+ years of production-grade React development, including React 19.
• Advanced TypeScript for large codebases.
• Strong CSS skills (grid, flexbox, container queries).
• Experience with design systems and scalable component libraries.
• Familiarity with TanStack Router, React Query, Zustand, and Context API.
• Testing experience with Playwright, Vitest, and React Testing Library.
• Git/GitHub proficiency and strong English communication skills.

Nice-to-Have:

• Open-source contributions in React or TypeScript.
• Experience with tRPC and BFF/client architectures.
• CI/CD pipelines and build tools like Vite or Turborepo.
• Awareness of frontend security best practices.
• Agile team experience and participation in design/architecture discussions.