React/JavaScript UI Developer

Full-time

remote from anywhere in the the UK

We are seeking an experienced React/JavaScript UI Developer who can translate design concepts into interactive, production-ready web applications. The ideal candidate combines deep front-end development expertise with a solid foundation in UI/UX design principles, modern component design patterns, and collaboration across multidisciplinary teams to deliver polished, data-driven applications.

Responsibilities

Build high-quality React applications directly from wireframes and design specifications.

Demonstrated ability to design user interfaces, including wireframes, layout flows, and visual styles using tools like Figma or Adobe XD.

Implement custom UI components and reusable modules using React, TypeScript, and modern state management libraries.

Develop Applications With Complex Interactive Behaviors, Such As

Dynamic filtering, drilldowns, and user-driven exploration

Cross-component communication and responsive layout management

Integration with APIs and backend data pipelines for interactive content

Ensure application performance, testing, and reliability in production environments.

Collaborate closely with designers, data engineers, and product stakeholders to deliver intuitive and performant user interfaces.

Maintain clean, modular, and well-documented code following modern best practices.

Qualifications

Proven experience developing advanced React applications from design specifications or wireframes.

Strong knowledge of JavaScript (ES6+), React, and TypeScript.

Proficiency with HTML and CSS, including experience using Tailwind CSS or similar styling frameworks.

Experience with data visualization libraries (e.g., D3.js, Recharts, Chart.js).

Practical experience integrating with backend APIs and data services.

Familiarity with front-end testing frameworks (e.g., Jest, React Testing Library).

Git for version control and collaboration in a team-based development environment.

Experience with build and deployment tools (e.g., Vite, Webpack, or Next.js).

Preferred But Not Required

Familiarity with UI component frameworks such as shadcn/UI or Material UI.

Experience with R/Shiny and/or Python.

Exposure to healthcare or clinical research applications (e.g., clinical data review, pharmacovigilance, or medical/data monitoring dashboards).

Knowledge of backend technologies (e.g., Node.js, Python APIs) or containerization (Docker)