Software Engineer jobs in United Kingdom

Sanderson Government and Defence is looking for a Full Stack Software Engineer to join a trusted supplier delivering mission‑critical solutions in the defence and national security sector. You will work on leading‑edge technologies across AI/Data Science, Cyber, Cloud, DevOps/SRE, and Platform Engineering, developing solutions that protect people, platforms, and information against constantly evolving threats. This is an opportunity to contribute to innovative R&D projects while working in a supportive, technically focused environment.

As a Full Stack Software Engineer, you will design, develop, and maintain mission‑critical software for National Security customers. You will work on novel products that combine physical and digital systems, collaborate closely with clients to define strategy, and explore emerging technologies. The role involves both hands‑on development and problem‑solving, creating solutions that are secure, scalable, and reusable.

• Writing clean, secure code following a test‑driven approach
• Producing reusable and maintainable code
• Translating logical designs into physical designs and detailed specifications
• Documenting work using appropriate standards and tools, including prototyping where needed
• Working with emerging and well‑understood technologies, identifying suitable design patterns
• Integrating APIs and UI components with existing data stores and services
• Maintaining and developing architectural components including data ingest, storage, and REST APIs
• Participating in Agile ceremonies including stand‑ups, sprint planning, demos, and epic decomposition
• Collaborating with user researchers and internal stakeholders to represent user needs

• Java Enterprise development and Spring Boot
• Front‑end frameworks such as React, VueJS, or AngularJS
• Experience with appropriate testing frameworks
• Technologically curious with the ability and willingness to learn new tools and technologies

• Work at the cutting edge of technology in defence and national security
• Opportunity to spend time on innovative R&D projects and concept creation
• Collaborative, geeky, and creative environment that celebrates technical brilliance
• Competitive bonus scheme up to £3,000 / 6% of salary
• Generous holiday: 30 days plus bank holidays, 3.5 days over Christmas, option to buy/sell additional leave
• Supportive and engaging culture focused on growth and innovation
• Hybrid working: three days in the office, two days from home, flexible to work fully on‑site if needed

Candidates must be eligible to obtain DV security clearance due to the nature of this work.

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.