Data Scientist

London Stock Exchange Group; Greater London; On-site; GBP 80,000 - 120,000; Full time

Benefits offered by this job

healthcare

retirement planning

paid volunteering days

wellbeing initiatives

Job summary

London Stock Exchange Group (LSEG) is seeking an experienced Data Scientist to design, develop and deploy enterprise-scale AI and ML solutions. You will collaborate with software engineers, product managers and stakeholders to translate data into actionable business value and measurable outcomes.

The role emphasizes strong technical expertise, commercial awareness, and the ability to translate complex data into insights.

Qualifications

• Demonstrated experience delivering ML/AI solutions in a large-scale enterprise environment.
• Strong background in statistical modeling, predictive analytics and experimentation.
• Experience with structured and unstructured data at scale; translating business problems into measurable analytical outcomes.

Responsibilities

• Design, build and deploy ML models to solve operational and business challenges; focus on incident prevention and service health.
• Perform advanced statistical analysis and modelling across large data sets and develop reproducible workflows.
• Partner with engineering and product teams to transition solutions from PoC to production and define success metrics.

Skills

ML/AI solutions

Statistical modeling

Data analysis at scale

Production deployment

Python data science stack

LLMs / Generative AI

SQL

Cloud platforms

Data visualization

Stakeholder communication

Tools

Azure AI services

Job description

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

We are seeking an experienced Data Scientist to help develop and deploy enterprise‑scale AI and machine learning solutions that improve operational efficiency, service resilience and customer outcomes. You will work closely with software engineers, SREs, product managers, platform teams and business stakeholders to identify opportunities, build predictive models, evaluate AI solutions and take products from concept through to production. The ideal candidate combines strong technical expertise with commercial awareness and the ability to translate complex data into actionable insights and measurable business value.

WHAT YOU'LL BE DOING

AI & Machine Learning Solutions Design

Design, build and deploy machine learning models to solve operational and business challenges. Develop predictive analytics capabilities focused on incident prevention, service health, operational risk and customer experience. Support the development of Generative AI applications leveraging LLMs, retrieval systems and agentic workflows. Evaluate emerging AI technologies and recommend practical applications across the organisation.

Data Science & Analytics

Perform advanced statistical analysis and modelling across large‑scale operational and engineering datasets. Develop feature engineering, experimentation and model evaluation frameworks. Create insights and recommendations that drive decision making for senior stakeholders. Build and maintain reproducible data science workflows and pipelines.

Product Delivery

Partner with engineering and product teams to transition solutions from proof‑of‑concept into production. Define success metrics and measurement frameworks for AI products. Support model monitoring, governance and continuous improvement activities. Contribute to AI product roadmaps and prioritisation discussions.

Collaboration & Innovation

Work with subject matter experts from Engineering, Operations, Service Management and Product organisations. Communicate technical concepts clearly to both technical and non‑technical audiences. Contribute to the growth of LSEG's AI and Data Science community through knowledge sharing and mentoring. Promote responsible AI, model governance and data‑driven decision making.

WHAT YOU'LL BRING

Essential Experience

• Demonstrable experience delivering machine learning or AI solutions within a large‑scale enterprise environment.
• Strong experience applying statistical modelling, predictive analytics and experimentation techniques.
• Experience working with structured and unstructured data at scale.
• Proven ability to translate business problems into measurable analytical outcomes.
• Experience taking models from development into production environments.
• Python and associated data science ecosystem (Pandas, NumPy, Scikit‑learn).
• Machine learning techniques including classification, regression, clustering and anomaly detection.
• Experience with Generative AI, LLMs, RAG architectures or agent‑based AI solutions.
• SQL and large‑scale data analysis.
• Cloud‑based data science platforms and MLOps practices.
• Data visualisation and storytelling tools.

Desirable Skills

• Experience within financial services, regulated environments or market infrastructure.
• Familiarity with Azure AI services and Microsoft AI ecosystem.
• Experience with observability, SRE or operational analytics use cases.
• Experience developing AI‑powered automation solutions.
• Knowledge of Responsible AI and model governance frameworks.

Behaviours & Competencies

• Strong problem‑solving capability and analytical thinking.
• Curiosity and a passion for applying AI to real‑world challenges.
• Customer‑focused mindset with a focus on outcomes.
• Ability to work effectively across organisational boundaries.
• Ownership and accountability for delivery.
• Clear communication and stakeholder management skills.
• Commitment to continuous learning and innovation.

Career Stage

Senior Associate London Stock Exchange Group (LSEG)

Why join us

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.

Benefits

• healthcare
• retirement planning
• paid volunteering days
• wellbeing initiatives

Equal Opportunities

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.

Sustainability

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.

Contact & Application Process

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across Europe, the Middle East, Africa, North America, Latin America and Asia Pacific. Find out more and get to know some of our people who are pushing the boundaries of technology, finance and more around the world.