Core AI Engineer

ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

OUR PEOPLE:

People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives.  We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.

We know that real personal growth cannot be achieved by simply climbing a career ladder – which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.

ROLE SUMMARY:

The AI & Automation team is transforming how LSEG operates through the use of Artificial Intelligence, Automation and Intelligent Engineering. We are building enterprise-scale AI capabilities that improve service resilience, automate operational workflows, accelerate engineering productivity and enhance customer outcomes.

As a Core AI Engineer, you will play a leading technical role in the design, development and deployment of AI solutions across the organisation. You will combine software engineering, machine learning and AI platform expertise to turn innovative concepts into production-ready products that deliver measurable business value.

This is a hands-on engineering role for someone passionate about building scalable AI systems, solving complex technical challenges and influencing the direction of enterprise AI adoption.

WHAT YOU'LL BE DOING:

Design & Build AI Solutions

• Design, develop and deploy enterprise-grade AI products and services.
• Build agentic AI workflows, retrieval-augmented generation (RAG) solutions and intelligent automation capabilities.
• Deliver scalable integrations with LLMs, MCP services, vector databases and enterprise platforms.
• Develop reusable AI frameworks, accelerators and engineering standards.

Engineering Excellence

• Lead technical implementation across multiple AI initiatives.
• Define solution architecture and engineering patterns for AI products.
• Build robust APIs, orchestration services and automation pipelines.
• Drive non-functional requirements including security, scalability, resilience and observability.

Product & Platform Development

• Partner with Product Managers, Data Scientists and Engineering teams to deliver AI solutions from concept through production.
• Support the development of AI platforms that enable wider engineering adoption.
• Establish monitoring, evaluation and governance processes for AI systems.
• Improve reliability and performance of deployed AI capabilities.

Innovation & Technical Leadership

• Act as a technical leader across AI initiatives.
• Mentor engineers and contribute to the development of AI engineering capability.
• Evaluate emerging AI technologies and identify opportunities to accelerate delivery.
• Provide technical direction on architecture, tooling and engineering practices. The Lead/IC profile is expected to guide technical outcomes and raise capability through collaboration while remaining deeply hands-on. 

Business Impact

• Translate business challenges into scalable AI solutions.
• Define measurable KPIs and success measures.
• Ensure solutions drive productivity improvements, operational resilience and customer value.
• Partner with stakeholders across Engineering, Operations and Product organisations.

WHAT YOU'LL BRING:

Essential Experience

• Extensive software engineering experience delivering production-scale solutions.

• Experience building AI or machine learning systems in enterprise environments.

• Demonstrated experience moving AI solutions from proof-of-concept into production.

• Strong understanding of software architecture, engineering standards and operational practices.

• Ability to influence technical direction across teams without formal management responsibility.

Technical Skills

• Python and modern software engineering practices.

• Experience with Large Language Models (LLMs) and Generative AI.

• Agent frameworks and orchestration technologies.

• Retrieval Augmented Generation (RAG) architectures.

• API development and microservice design.

• Cloud-native development (Azure preferred).

• CI/CD automation and MLOps practices.

• Vector databases and knowledge retrieval platforms.

• Data modelling and distributed systems design.

• AI observability, evaluation and governance frameworks.

Desirable Experience

• Experience within Financial Services or highly regulated environments.

• Knowledge of Service Reliability Engineering (SRE) principles.

• Experience developing AI-powered operational tooling.

• Experience building internal AI platforms or developer enablement capabilities.

• Familiarity with Microsoft AI ecosystem, Copilot technologies and Azure AI services.

The successful candidate will demonstrate:

• Deep technical curiosity and engineering excellence.

• Strong ownership mindset and delivery focus.

• Ability to solve ambiguous and highly complex problems.

• Excellent stakeholder engagement and communication skills.

• Collaborative leadership through influence.

• Commitment to responsible and ethical AI development.

• Passion for continuous learning and innovation.

Career Stage:

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.