Principal AI Engineer, London Stock Exchange
Office located in Canada Square, London or Chapel Qtr, Nottingham
Stock exchange in the City of London
Open for applications
Stock exchange in the City of London
1001+ employees
Open for applications
Office located in Canada Square, London or Chapel Qtr, Nottingham
1001+ employees
Company mission
To make things happen, out there in the real world, where it matters.
Role
Who you are
- 12+ years in software development, with a least a year in AI Development
- Extensive experience in software development and system architecture
- Proven ability to deliver complex projects with high technical standards
- Strong technical background in Java, Python, and/or other high-level programming languages
- Expertise in designing scalable and secure systems
- Hands-on experience with AI tools and frameworks, including:
- Prompt Engineering for LLMs (e.g., OpenAI GPT, Anthropic Claude)
- Model fine-tuning and deployment
- AI integration into enterprise applications
- Prompt management tools (Langfuse)
- Knowledge of vector databases, embeddings, and retrieval-augmented generation (RAG)
- Experience with cloud platforms (AWS, Azure, GCP)
- Familiarity with CI/CD pipelines and modern development tools
What the job involves
- The Principal Engineer is a senior technical expert responsible for designing, developing, and delivering high-quality software solutions
- This role emphasizes deep technical proficiency, innovation, and hands-on development, including advanced work in AI technologies such as prompt engineering and large language models (LLMs)
- The ideal candidate will serve as a technical authority, proving concepts with the latest AI technology or practices in the form of a spike or proof of concept
- This person will be responsible for pushing the boundaries of what is possible, turning vision or concept into a technical solution, driving best practices and ensuring scalability, performance, and security across systems
- Design and implement complex, scalable, and secure applications
- Write clean, efficient, and maintainable code in Java, Python, and other high-level languages
- Provide architectural guidance and ensure adherence to best practices
- Optimize system performance and troubleshoot critical issues
- Develop and refine prompt engineering strategies for LLM-based applications
- Integrate and optimize Large Language Models (LLMs) into products and workflows
- Collaborate with AI teams to improve model performance and user experience
- Stay current with emerging technologies, frameworks, and AI advancements
- Prototype and evaluate new tools and methodologies for adoption
- Collaboration
- Work closely with product managers, QA, and other developers to deliver high-quality solutions
- Participate in code reviews and contribute to technical documentation
- Advocate for automation, testing, and continuous integration practices
- Ensure compliance with security and regulatory standards
Our take
The London Stock Exchange is one of the world’s oldest stock exchanges, with a history dating back over 300 years. It operates as a part of LSEG (London Stock Exchange Group), one of the world’s leading providers of financial markets infrastructure, as a marketplace to enable stock brokers and traders to buy and sell stocks, bonds, and other securities.
The London Stock Exchange has lived through a stream of innovations; from telegraph and telephone, to the Market Price Display System, automatic trade matching, and the digitisation of issuer services. In 2019 it acquired Refinitiv, a financial information company, and in doing so became a global financial news and data business.
Most recently, the London Stock Exchange has made moves to support the evolution of private markets, and further build its presence in this space. It partnered with Floww, a platform that connects investors with private companies, with aims to launch a private primary capital raising facility, as well as explore new technologies and secondary market options for the platform.
Steph
Company Specialist at Welcome to the Jungle
Insights
21% employee growth in 12 months
Company
Company HQ
City of London, London, UK
Leadership
David Schwimmer
(CEO)Prior to joining LSEG in 2018, David was a Managing Director at Goldman Sachs for over 20 years.
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