Senior Software Engineer - Quant Research & AI Tools

LSEG (London Stock Exchange Group); New York (NY); On-site; USD 192,000 - 321,000; Full time

Job summary

LSEG (London Stock Exchange Group) Senior Software Engineer, Quantitative Research in New York City, NY, seeks an experienced Python developer to design and build scalable software for index research and product innovation.

You will collaborate with quantitative researchers and engineering teams to deploy analytics on AWS, using Polars, PyArrow, and SQL, while promoting modern software practices and AI-assisted development tools.

Qualifications

• Experience in software development for quantitative finance or data-intensive environments.
• Expert Python programming skills for high-quality, maintainable software.
• Experience with Polars, PyArrow, and SQL for large datasets.

Responsibilities

• Design and develop Python-based software and analytical libraries for index research and product innovation.
• Build scalable data pipelines and analytical frameworks for large financial datasets.
• Develop high-performance data processing solutions using Polars, PyArrow, and SQL.
• Partner with researchers to turn prototypes into production-ready software.
• Collaborate with engineering on AWS deployment and enterprise integration.
• Design APIs and shared services to improve cross-team collaboration.

Skills

Python

Polars

PyArrow

SQL

AWS

AI/LLM tooling

Education

MSc or PhD (or equivalent)

Tools

Git

Job description

LSEG (London Stock Exchange Group) Senior Software Engineer, Quantitative Research in New York City, NY, seeks an experienced Python developer to design and build scalable software for index research and product innovation.

You will collaborate with quantitative researchers and engineering teams to deploy analytics on AWS, using Polars, PyArrow, and SQL, while promoting modern software practices and AI-assisted development tools.