Senior AI Software Engineer

Company: Harrington Starr
Apply for the Senior AI Software Engineer
Location: London
Job Description:

Are you an experienced AI engineer looking to make a real impact? Our client, a leading global asset management firm, is seeking a talented Senior AI Engineer to join their team.

In this hands-on role, you will be responsible for designing, building, and maintaining cutting-edge AI pipelines and agentic systems to power the firm’s investment strategies and client services. This is not just prototype work – we’re looking for someone with a proven track record of shipping production-grade AI solutions.

Key Responsibilities:

  • Develop Retrieval-Augmented Generation (RAG) pipelines over unstructured data using embeddings, vector databases, and graph databases
  • Implement robust multi-agent workflows where specialized AI agents coordinate to solve complex tasks
  • Ensure the security, governance, and ethical use of AI systems through prompt injection defenses, output filtering, and data privacy controls
  • Fine-tune and adapt open-source AI models to meet the firm’s unique requirements
  • Build high-performance backend services and APIs to expose AI capabilities to internal and external users

Qualifications:

  • 3+ years of professional software engineering experience, including 1-2 years building production AI/ML systems
  • Expertise in Python, data engineering, and modern AI tooling (e.g. LangChain, LlamaIndex)
  • Demonstrated experience designing and deploying end-to-end RAG pipelines in production environments
  • Strong understanding of AI concepts like embeddings, transformer models, and prompt engineering
  • Ability to work autonomously, identify opportunities, and drive initiatives to completion
  • Passion for cutting-edge AI and a desire to push the boundaries of what’s possible

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Posted: September 20th, 2026