About The Role FDM is a global business and technology consultancy seeking a Senior Python Developer to work for our client within the public sector. This is initially a 6 month contract with very good prospects to extend and will be a hybrid role that will be based in Leeds. We are seeking an experienced Senior Python Developer to design, build, and maintain secure, scalable digital solutions within a highly regulated environment. The role involves working on complex, integration‑heavy systems that process sensitive data and support critical services. You will provide technical leadership, contribute to architectural decisions, and support team capability growth, while ensuring solutions meet stringent standards for security, reliability, and compliance. Responsibilities: Design, develop, and maintain Python‑based applications and services Lead development across the full software lifecycle, from discovery through deployment and support Build and maintain APIs and third‑party system integrations Work with complex and sensitive datasets, ensuring data quality and integrity Ensure systems meet applicable security, data protection, and regulatory requirements Collaborate with delivery teams, product owners, and stakeholders Conduct code reviews and mentor junior and mid‑level developers Support and improve CI/CD pipelines and cloud‑hosted services Produce and maintain clear technical documentation Contribute to system architecture and continuous improvement initiatives About You Must be eligible for Security Clearance (SC) or already hold active SC Proven experience working within the UK public sector or public‑sector‑aligned organisations Experience operating in regulated, compliance‑heavy environments Strong understanding of secure system design, data privacy, and access controls Experience delivering integration‑heavy platforms Exposure to industry data standards and structured data models Demonstrated experience operating at Senior Developer level Ability to take ownership of technical decisions and guide best practice Strong communication skills across technical and non‑technical audiences Experience mentoring or coaching other developers Comfortable working in Agile / iterative delivery environments About Us FDM is an award-winning global leader in tech and business talent solutions, backed by more than 35 years of industry experience. We have centres across Europe, North America, and Asia-Pacific, and a global workforce of over 2500 employees. FDM has shown exponential growth throughout the years, firmly establishing itself as an award-winning employer, currently listed on the FTSE4Good Index and as a 2026 Financial Times UK ‘Best Employer’. Diversity and Inclusion FDM Group is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, national origin, age, disability, veteran status or any other status protected by federal, provincial or local laws. Why join us Career coaching, mentoring and access to upskilling throughout your entire FDM career Assignments with global companies and opportunities to work abroad Opportunity to re-skill and up-skill into new areas, develop non-linear career paths and build a skillset within your field Annual leave and work-place pension