This role sits within a software team building data-driven systems used in the aviation sector, where reliability and engineering quality are critical. As platforms continue to evolve and new services are introduced, the team is looking for an experienced Python developer who can contribute at a senior level and take ownership of complex, long-lived systems. Up to £70,000 | Fareham, Hampshire | 4 days onsite The role You will work on business-critical applications that process and analyse operational data in a regulated environment. Key responsibilities include: Developing and maintaining Python services Building applications using Flask or Django Working with SQL databases and structured datasets Contributing to cloud-based platforms Improving existing systems and supporting new feature development Participating in code reviews and technical discussions The focus is on maintainable code, clear design, and long-term stability rather than rapid feature churn. What we're looking for Essential experience: Strong commercial Python development Flask or Django SQL and relational databases Git or similar version control Desirable but not essential: Cloud platforms Docker or containerised environments Data processing libraries such as NumPy or Pandas You should be comfortable working independently, communicating clearly, and taking responsibility for the systems you work on. Salary and benefits Salary up to £70,000 25 days annual leave plus bank holidays Benefits include pension, private healthcare, life assurance, income protection, wellbeing support, and a flexible benefits allowance. If you are a Senior Python Developer looking for a stable role working on meaningful, well-engineered systems, this is worth a conversation. Apply now or contact Chris Lynes at Spectrum IT Recruitment for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.