Senior Software Engineer, Web Developer

Join to apply for the Senior Software Engineer, Web Developer role at Diamond Light Source
.

Pay range is provided by Diamond Light Source. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Diamond Light Source is the UK’s national synchrotron; a huge scientific facility designed to produce very intense beams of X-rays, infrared and ultraviolet light. Our scientists use the light to study a vast range of subject matter, from new medicines and treatments for disease to innovative engineering and cutting‑edge technology. Diamond is one of the most advanced scientific facilities in the world, and its pioneering capabilities and talented staff are helping to keep the UK at the forefront of scientific research.

We now have an opportunity for a Web Developer within Diamond’s Data Acquisition (DAQ) group, working as part of the newly formed UI/UX team. The user interface is the gateway to all D-II services, providing scientists with an intuitive entry point to data acquisition, visualization, and instrument control. You will play a key role in designing and developing the science‑facing user interfaces for the SWIFT and CSXID flagship beamlines, ensuring they deliver a responsive, reliable, and engaging user experience that enables cutting‑edge science.

• Designing and developing new web applications and components to support beamline operations and experimental workflows.
• Providing input to Diamond’s scientific software architecture and contributing to shared UI frameworks across the DAQ group.
• Providing technical assistance within DAQ to develop, test, maintain, and support user interfaces in collaboration with scientists, engineers, and software developers.
• Working with internal and external stakeholders to enhance core software, ensuring it is robust, adaptable, and easy to extend.
• Using technical and professional knowledge to identify opportunities for technical or process improvement across the beamlines supported by the team.

You will hold a degree in engineering, computer science or have equivalent experience.

• Significant relevant experience of JavaScript, HTML and CSS with a focus on developing and enhancing web applications with modern JavaScript frameworks such as React & NextJS.
• A portfolio / Git Hub of demonstrable experience of building web applications & dashboards with a focus on SaaS & B2B products, internal web‑applications, Business CMS products or equivalent data‑intensive applications.
• Excellent technical understanding of methods, systems and approaches relating to technical software engineering e.g. Source Control, Code Review, Continuous Integration.
• SCRUM and agile processes.

• Familiarity with Service‑oriented & Microservices architecture.
• Familiarity with Design tools (Figma, Sketch).
• Exposure to JavaScript testing frameworks e.g. Jest, Vitest, Cypress, Jasmine, etc.
• Knowledge of CI/CD techniques.
• Experience with Graph
  
  QL, OpenAPi spec, JSON Schema & SQL / No SQL databases.
• Familiarity with Mono Repo project structures (Turbo Repo).
• Development of APIs with Python Frameworks e.g. FastAPI.

Diamond offers an exceptional benefits package to support staff in achieving a positive work/life balance. This includes 26 days annual leave plus Christmas closure, public holidays, 2 annual volunteering days and flexible working hours. We also offer an excellent defined benefit pension scheme. Staff also have access to a range of amenities on site including a nursery, cafes, a restaurant and sports and leisure facilities.

A relocation allowance may also be available where applicable. As standard this role offers a hybrid working arrangement with a minimum of 3 days working onsite per week.

Please use the online application process to apply and tell us why you believe you are suitable for this role.

The closing date for applications is 1st February 2026; however, we encourage early applications as some candidates may be interviewed before this date.

• Seniority level:
  Not Applicable
• Employment type:
  
  Full‑time
• Job function:
  Information Technology and Research
• Industries:
  Research Services