Lead Python Developer - £90,000 - DV Cleared

Role: Lead Python Developer Location: Cheltenham or London Salary: £80,000 - £90,000 Clearance Required: DV We're looking for an experienced Lead Python Developer to join a high-impact programme within the UK Defence and National Security sector. This is a unique opportunity to play a key role in delivering secure, mission-critical software systems that directly support national safety and strategic defence operations. As a technical leader, you'll drive the design and development of advanced Python-based systems-often in highly secure environments guiding cross-functional teams, ensure engineering excellence, and oversee the full software lifecycle, from concept and prototyping to secure deployment and ongoing support. Key Responsibilities: Leading the design and development of Python-based software systems in a high-security setting Working closely with data scientists, analysts, and engineering teams to deliver scalable, reliable solutions Architecting secure applications and services in line with defence-grade standards Mentoring developers and enforcing best practices across code, testing, and deployment Integrating machine learning models and real-time data pipelines where applicable Collaborating with stakeholders to gather requirements and showcase technical progress Essential Skills & Experience: Proven expertise in Python development in production environments Experience in secure or regulated industries (Defence, Government, Aerospace, etc.) Solid grasp of CI/CD, containerisation (Docker/Kubernetes), and cloud or on-premise deployments Ability to lead technical discussions, reviews, and deliverables across cross-functional teams Familiarity with Agile/Scrum delivery Active DV Clearance If you are interested in the above position, please contact me, James Chapman on 07903 438136 or drop me an email at j.chapman@ioassociates.co.uk