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Senior Backend Python Engineer - AI Platform

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Citi

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Location:
United Kingdom , London

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

Are you looking for a career move that will put you at the heart of a global financial institution? We are seeking an exceptionally skilled Senior Python Software Engineer to architect and implement robust, scalable backend systems that power our advanced AI tools and services. This hands-on individual contributor role demands expert knowledge of Python fundamentals, a profound understanding of software design principles, architectural patterns, and an unwavering commitment to writing clean, maintainable, and production-grade code that minimizes technical debt. Proficiency in FastAPI is a must. Prior experience in Generative AI development and its associated frameworks is a bonus.

Job Responsibility:

You will design, implement, build and deploy backend systems to automate the analysis of data, code and documentation, and structure the extracted knowledge in a Credit Risk Domain aware knowledge graph

Requirements:

  • Proficiency in core Python and FastAPI framework
  • Profound understanding of software design principles, architectural patterns, and an unwavering commitment to writing clean, maintainable, and production-grade code
  • Experience of the full lifecycle of design, implementation and running of enterprise software solutions involving cross functional team collaboration
  • Experience contributing to the architecture and design (architecture, design patterns, reliability, scaling) of new and current systems
  • Experience with containerized deployment (Kubernetes, OpenShift etc)
  • Experience with DevOps, CI/CD and agile methodology

Nice to have:

Experience in Generative AI, LLM frameworks and/or ML is a bonus

What we offer:
  • Generous holiday allowance starting at 27 days plus bank holidays
  • increasing with tenure
  • A discretional annual performance related bonus
  • Private medical insurance packages to suit your personal circumstances
  • Employee Assistance Program
  • Pension Plan
  • Paid Parental Leave
  • Special discounts for employees, family, and friends
  • Access to an array of learning and development resources

Additional Information:

Job Posted:
May 14, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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