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Principal AI Software Engineer, Senior Vice President

United Kingdom, London · Job Posted May 14, 2026
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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 Principal AI 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 hands-on expertise in Generative AI development and its associated frameworks is required. Hands-on experience and in-depth understanding of C++ is a significant bonus.

Job Responsibility

  • Architect and implement cutting-edge software systems, defining the technical design for our AI solutions to ensure scalability, performance, and reliability
  • Drive the hands-on design, implementation, and deployment of sophisticated systems that automate the analysis of data, code, and documentation
  • Apply deep expertise to structure extracted knowledge within a Credit Risk Domain-aware knowledge graph, including advanced strategies for effectively modelling complex codebases, particularly C++, within this graph
  • Act as a critical technical partner with data scientists, business analysts, and other engineering teams to translate challenging business requirements into robust technical solutions and ensure successful, high-quality project delivery
  • Tackle the most complex technical challenges within our AI initiatives, providing solutions that set the standard for engineering excellence

Requirements

  • Exceptional Python Expertise: Demonstrated mastery of core Python, including advanced features, performance optimization, and a deep understanding of the FastAPI framework
  • Prior hands-on experience with Generative AI, Large Language Model (LLM) frameworks (e.g. LangChain, LlamaIndex), and their application in enterprise environments is a must. This must be underpinned by a profound understanding of core machine learning principles, algorithms, and data science methodologies
  • Full Lifecycle Ownership: Extensive hands-on experience and technical authority throughout the entire software development lifecycle, from conceptualization and design to implementation, deployment, and operational ownership of enterprise software solutions, involving significant cross-functional collaboration
  • Strategic System Design: Significant hands-on experience in architecting and designing (architecture, design patterns, reliability, scaling) highly complex new and current systems with broad technical impact
  • Hands-on expertise with containerized deployment technologies (e.g. Kubernetes, OpenShift, Docker) and orchestration strategies
  • Hands-on experience and in-depth understanding of C++ is a significant bonus, particularly for complex code analysis, parsing, and integration into knowledge graph structures

Nice to have

Hands-on experience and in-depth understanding of C++ is a significant bonus, particularly for complex code analysis, parsing, and integration into knowledge graph structures

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

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