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 onsiteThe 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 servicesBuilding applications using Flask or DjangoWorking with SQL databases and structured datasetsContributing to cloud-based platformsImproving existing systems and supporting new feature developmentParticipating 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 developmentFlask or DjangoSQL and relational databasesGit or similar version controlDesirable but not essential:Cloud platformsDocker or containerised environmentsData 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 benefitsSalary up to 70,00025 days annual leave plus bank holidays Benefits include pension, private healthcare, life assur