Senior Software Engineer Application Deadline: 4 September 2026 Department: Software Engineering Employment Type: Permanent Location: London (Hybrid) Compensation: £70,000 - £95,000 / year Description Please note: applicants must hold active SC clearance and be eligible to obtain DV. This role also requires applicants to work 4 days per week on site At Gemba Advantage, we design and build secure, user centred digital products for critical public sector organisations across the UK. Our teams tackle complex, high impact systems, the kind where security, scalability, and seamless usability aren't just features, but absolute requirements. We’re looking for a Senior Software Engineer who wants to shape meaningful systems, influence technical direction, and collaborate with capable people who care about doing the job properly. In this role, you will join two sister teams working on one of our most mission focused projects, directly developing a suite of business critical systems and solutions that make a tangible impact. You’ll help design modern cloud native services, elevate engineering standards, and tackle genuinely challenging problems alongside our clients. What you’ll do: Build for Impact: Design and deliver secure, scalable software within small, agile, high performing teams. Stay Hands-On: Balance writing quality code with shaping overall architecture and technical strategy. Lead by Example: Set modern engineering standards, champion best practices (CI/CD, DevSecOps), and mentor teammates. Solve Real World Problems: Work directly with customers to untangle complex requirements and deliver high value solutions. What you’ll bring: Security Clearance: Active SC clearance with eligibility to obtain DV clearance (essential). Proven Track Record: Solid experience delivering production grade systems in complex, highly regulated environments. Technical Depth: Mastery of at least one modern language (Java, TypeScript, Python, Go, etc.). Cloud & Security Mindset: Hands on experience with cloud/container technologies and a security first approach to development. Technical Leadership: Confidence influencing architecture decisions and driving continuous improvement across teams. Why join Gemba? Gemba is built upon four core values that we believe make Gemba a great place to work: Our people are our most important asset and we prioritise their needs accordingly We succeed and fail as a team not as individuals. We do the right thing and we do the thing right. We maintain an overwhelming focus on the customers’ needs. Away from our values, Gemba offers an excellent and comprehensive package to our Gembans, including great salaries, meaningful perks, a culture of truly rewarding and celebrating success, amongst many other core benefits like flexible pensions and PMI. As an Equal Opportunity Employer, we recognise, and studies confirm, that often underrepresented candidates in the workplace are less likely to apply to roles unless they meet all skills and experience of the position. At Gemba we celebrate diversity and are committed to creating a diverse and inclusive workplace, therefore we make sure that our recruitment and selection processes never discriminate based upon age, race, religion, disability, sex, sexual orientation, gender reassignment, marriage and civil partnership, or pregnancy, and actively welcome applications from all groups.