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About the Role

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. You will collaborate closely with quantitative researchers, product specialists, and engineering teams to transform research ideas into robust, reusable software while driving the adoption of modern software engineering practices and AI-enabled development tools.

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.

Skills

Python
Polars
PyArrow
SQL
AWS
APIs
AI
LLM
Automated testing
Code reviews
Version control
CI/CD
Git

Experience Level

Senior
Manager

Education Level

MSc or PhD or equivalent experience or equivalent in Computer Science, Engineering, Mathematics, Finance, or another quantitative field.

Salary/Compensations

$192,400 - $320,600

Benefits

Annual Incentive Plan (AIP/”bonus plan”)
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
Healthcare
Retirement planning
Paid volunteering days
Wellbeing initiatives

About the Company

FTSE Russell is redefining how index research is developed, implemented, and delivered.
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 values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day.
Join us and be part of a team that values innovation, quality, and continuous improvement.
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.

Equal Opportunity

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.