Salary: 85,100 Closing date: 24th March 2026 Contract type: Fixed Term Contract Until early 2027 Interview Dates: W/C 30th March The Wellcome Trust is a global charitable foundation. We improve health for everyone by funding science, leading policy, and advocacy campaigns, and building partnerships. We plan to spend 16bn over the next ten years, funding new discoveries in life, health, and wellbeing, and taking on three global health challenges: mental health, infectious disease and climate and health. These challenges need the bold science we support, but they wont be solved by science alone. We are offering the opportunity to be a Senior Software Engineer focussed on working with the Wellcome Collection. Where in Wellcome will I be working? Working in Wellcomes Digital & Technology directorate, embedded in a product engineering team that designs, builds and maintains Wellcome Collections data and digital platforms, collaborating closely with developers, designers, and product colleagues across the organisation. See https://docs.wellcomecollection.org/index for an overview of our teams work. What will I be doing? You will work as part of a product team solving some of the complex Data and Digital problems that Wellcome must deal with. As a Senior Software Engineer, you will: Be responsible for architecting, developing and continuously improving software for Wellcome Share your skills and experience with other software engineers in the department, including mentoring. Work collaboratively with other disciplines in a multi-disciplinary team Contribute to the creation and development of a diverse and inclusive culture across the organisation, collaborating across departments Contribute to a diverse and inclusive culture across the organisation, collaborating across departments. Is this role for me? We are looking for someone that enjoys working on challenging problems, working across the stack and mentoring other engineers. We are looking for someone who: Has a great understanding and experience of at least one server-side language (Python, Scala) Has solid understanding of client-side technology (React, Next.js TypeScript) Experience working in AWS, (ECS, Lambda, RDS, Step Functions), and Infrastructure as Code (Terraform). Is experienced in working with a team to architect and develop software solutions How to apply To apply for this role, please submit an up-to-date CV and answer two application questions to demonstrate that you meet the minimum requirements for the role. Minimum criteria: Strong experience in at least one server-side language (Python, or Scala). Solid understanding of frontend technologies (React, Next.js, TypeScript). Proven experience with modern development practices, including Git, CI/CD, and collaborating via distributed version control. Good understanding of database and data pipeline architecture (must have hands-on experience). You can view the full the Job Description here. You can read more about the benefits we offer our employees on our website Our Hybrid Way of Working We understand that our colleagues have commitments and personal interests outside of work and we strive to build a flexible working environment, in which people can perform at their best. We are currently working 2 days per week (Tuesdays and Wednesdays) from our Euston Road offices (as part of our hybrid Ways of Working) with the remaining 3 days from home. Diversity and Inclusion is at the heart of everything we do Diversity and Inclusion is a priority at Wellcome. We are committed to cultivating a fair and inclusive environment, where everyone can be themselves and thrive. We are happy to discuss flexible working options for all roles. We work to ensure that our recruitment processes are as inclusive as possible to everyone. This includes making adjustments for people who have a disability or long-term condition. Please visit our website for more information on adjustments and accessibility, or contact us at jobs@wellcome.org. We support researchers, we take on big health challenges, we campaign for better science, and we help everyone get involved with science and health research. Wellcome isn’t just a supporter of great ideas, it’s a great place to work. We offer excellent benefits and help our employees to develop in an open, respectful culture where differences are valued.