Senior Quant Research Engineer (Python & AI)

LSEG; Greater London; On-site; GBP 85,000 - 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 a Senior Analyst, Quantitative Research & Development to drive quantitative development and data analytics across index research. You will build Python and SQL tools, validate data, and collaborate across multiple teams to deliver scalable research solutions.

The role requires hands‑on expertise in Python, SQL and modern analytics, with exposure to AI agents and automation to enhance research and operations.

Qualifications

• Approx. 5 years of experience in quantitative development, financial data analytics or related field.
• Strong hands-on Python and SQL skills; experience with Pandas, NumPy.

Responsibilities

• Develop, test and maintain Python and SQL‑based research tools, investment analytics and data pipelines, applying strong software engineering and CI/CD practices.
• Perform detailed data analysis, validation and quality assurance across large financial datasets; investigate anomalies and identify root causes.
• Develop automation and AI‑enabled tools and agents to improve research, data checking and operational workflows.
• Support quantitative investment and index research, including factor analysis, regression, portfolio optimisation, risk modelling and performance analytics.
• Work with datasets and platforms including Worldscope, IBES, Lipper, Datastream and Refinitiv Workspace, developing understanding of their structure and usage.
• Partner with Research Analysts, Engineering, Technology and Data Operations to translate analytical requirements into robust, scalable solutions.
• Support index research, methodology development, rebalances and other operational activities where strong analytical and technical expertise is required.
• Respond to internal and external analytical enquiries and contribute to client‑facing analysis and materials.
• Continuously improve existing code, processes and research infrastructure with focus on scalability, automation, accuracy and maintainability.

Skills

Python

SQL

Pandas

NumPy

Git

CI/CD

VS Code

GitHub Copilot

Generative AI

AI agents

Tools

Worldscope

IBES

Lipper

Datastream

Refinitiv Workspace

Job description

London Stock Exchange Group (LSEG) is seeking a Senior Analyst, Quantitative Research & Development to drive quantitative development and data analytics across index research. You will build Python and SQL tools, validate data, and collaborate across multiple teams to deliver scalable research solutions.

The role requires hands‑on expertise in Python, SQL and modern analytics, with exposure to AI agents and automation to enhance research and operations.