Python Developer

Salary: £62,000 - 102,000 per year

Requirements:

• 3+ years of hands-on experience building an enterprise-scale, highly componentized application using Python and FastAPI
• Hands-on development experience in Python
• Experience working with CI/CD pipelines, Kubernetes, and other containerized platforms
• Ability to effectively interact and collaborate with the development team
• Ability to effectively communicate development progress to the Project Lead
• Experience working with onshore, offshore, and matrix teams to implement a business solution
• Recent experience with modern Python development using Large Language Models, Model Context Protocol, and Retrieval Augmented Generation (RAG) architecture
• Experience developing applications in the financial services industry is preferred
• Bachelors degree, university degree, or equivalent experience

Responsibilities:

• Participate in the establishment and implementation of new or revised application systems and programs in coordination with our Technology team
• Contribute to applications systems analysis and programming activities
• Research and resolve complex issues, escalating as appropriate
• Partner with onshore and offshore teams to design and deliver innovative technology solutions for our front office and Credit Risk business
• Implement projects based on Python, FastAPI, MCP, LLM, Java, and other latest technologies
• Work with developers onshore, offshore, and matrix teams to implement business solutions
• Investigate possible bug scenarios and production support issues

Technologies:

• CI/CD
• FastAPI
• Support
• Java
• Kubernetes
• LLM
• Matrix
• MCP
• Python
• RAG

More:

We are Citi, and we are seeking a highly motivated Python developer to join our Wholesale Credit Risk Technology team supporting Institutional Credit Management (ICM) in Belfast, Northern Ireland. This is a full-time Applications Development role within our Technology organization, offering the opportunity to work on innovative solutions for the front office and Credit Risk business, using modern technologies including Python, FastAPI, MCP, LLM, and Java. You will gain exposure to business and technology initiatives within the Wholesale Credit Risk Division and help maintain our leading position among competitors.

last updated 36 week of 2026