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From the employer's careers site First seen 29 Oct 2026 · Still live on 2 Nov 2026

Senior Software Engineer, Quantitative Research

Salary

$192,400 - $320,600 per year

Apply on London Stock Exchange Group (LSEG)

Description

We are looking for a Senior Software Engineer to join the Index Research & Design team and help build the technology that powers the next generation of index research and product innovation.

Working at the intersection of quantitative finance, software engineering, and cloud technologies, you will develop scalable research platforms, analytical libraries, and production-ready software that accelerate research and support the delivery of innovative index products.

Responsibilities

  • Design and develop Python-based software, analytical libraries, and reusable components that support index research, methodology development, and product innovation.
  • Build scalable applications, data pipelines, and analytical frameworks that enable researchers to analyse large financial datasets and efficiently evaluate new index concepts.
  • Develop high-performance data processing solutions using modern Python technologies, including Polars, PyArrow, and SQL.
  • Partner with quantitative researchers to transform analytical prototypes into robust, maintainable, production-ready software.
  • Collaborate with engineering teams to implement research capabilities on AWS and integrate analytical solutions into enterprise platforms.
  • Design APIs and shared services that improve collaboration between research, engineering, and product teams.
  • Evaluate and implement AI-assisted development tools and Large Language Model (LLM) technologies to improve software development, research productivity, documentation, and knowledge management.
  • Champion modern software engineering practices, including automated testing, code reviews, version control, CI/CD, and reproducible development.
  • Contribute to the technical roadmap of the Index Research & Design team by identifying technologies and approaches that improve scalability, efficiency, and innovation.

Requirements

  • Significant experience developing software in quantitative finance, financial data, investment research, or another data-intensive analytical environment.
  • Expert Python programming skills with experience building high-quality, maintainable software.
  • Strong experience processing large and complex datasets using modern Python data libraries such as Polars, PyArrow, and SQL.
  • Experience developing applications or analytical services on AWS or another major cloud platform.
  • Strong understanding of software architecture, APIs, data engineering concepts, and modern software development practices.
  • Experience designing scalable analytical tools, reusable software libraries, or research platforms.
  • Interest in applying AI and LLM technologies to improve software engineering and quantitative research workflows.
  • Good understanding of financial markets, index methodologies, or quantitative investment concepts, with the ability to collaborate effectively with quantitative researchers.
  • Excellent communication skills and the ability to work effectively across research, engineering, product, and technology teams.

Benefits

  • Competitive salary: $192,400 - $320,600 per year
  • Annual Incentive Plan (AIP/"bonus plan")
  • LSEG Benefits program, including:
  • Annual Wellness Allowance
  • Paid time-off
  • Medical, Dental, Vision
  • Flex Spending & Health Savings Options
  • Prescription Drug plan
  • 401(K) Savings Plan and Company match
  • Basic life insurance
  • Disability benefits
  • Emergency backup dependent care
  • Adoption assistance
  • Commuter assistance

Skills

Required

Apply on London Stock Exchange Group (LSEG)