Senior Frontend Developer

Company: Rullion
Apply for the Senior Frontend Developer
Location: Greater London
Job Description:

We are seeking a talented and motivated Senior Frontend Developer with strong expertise in TypeScript and React to join our growing development team. In this role, you will work on building high-quality, scalable, and responsive web applications using React and TypeScript. You will collaborate closely with cross-functional teams to deliver exceptional user experiences, optimize performance, and contribute to the overall architecture of our platform.

Initially it will be a six-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being based in their London office. It is a full-time role, 40 hours per week.

Accountabilities:

  • Develop and maintain scalable and responsive web applications using React.js and TypeScript.
  • Collaborate with UX/UI designers to implement modern, intuitive, and visually appealing user interfaces.
  • Write clean, maintainable, and efficient code while adhering to best practices.
  • Participate in code reviews and maintain a high level of code quality.
  • Troubleshoot and debug issues in both development and production environments.
  • Contribute to architectural decisions and collaborate with other engineers on overall application design.
  • Ensure the scalability and security of applications by following best development practices.
  • Stay up-to-date with emerging technologies and industry trends, integrating new tools and libraries into the project as appropriate.
  • Work with version control systems like Git and ensure continuous integration and deployment processes are followed.
  • Collaborate with back-end developers to integrate RESTful APIs and handle data flow effectively.

Knowledge and Skills:

  • Proven experience in React.js and TypeScript development.
  • Experience with state management libraries like Redux, Recoil, or similar.
  • Familiarity with RESTful APIs
  • Experience with version control systems, such as Git.
  • Solid understanding of web development fundamentals: HTML, CSS, and responsive design.
  • Strong debugging skills and the ability to troubleshoot performance issues.
  • Ability to write clean, modular, and well-documented code.
  • Strong communication skills and the ability to collaborate effectively in a team-oriented environment.

Please note:

Should your application be successful, and you are offered the role, a number of pre-employment checks need to be carried out before your appointment can be confirmed. Any assignment offer with our client will be subject to a satisfactory checking report from the Disclosure Barring Service.

This vacancy is being advertised by Rullion Ltd acting as an employment business.

Since 1978, Rullion has been securing exceptional candidates for a range of clients; from large well-known brands, to SMEs and start-ups. As a family-owned business, Rullion’s approach is credible and honest, focused on building long-lasting relationships with both clients and candidates.

We celebrate and support diversity and are committed to ensuring equal opportunities for both employees and applicants.

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Posted: March 24th, 2026