Principal Software Engineer; Python

Principal Software Engineer (Python) – LSEG

Are you an experienced software engineer with a passion for product ionizing data science solutions? Do you want to build innovative products for financial professionals using cutting‑edge technology? If so, we’d love to talk to you.

You will be working for a growing organization, developing high‑impact, scalable AI solutions and combining strategic thinking, strong problem‑solving skills, and a collaborative approach to ensure your team successfully ships great products.

• Design and develop scalable software products.
• Solve complex technical issues, optimize workflows, and provide strategic insights to partners to support project goals and timelines.
• Collaborate closely with Data Science, research and product teams.
• Set high technical standards.
• Perform hands‑on development as an individual contributor.

• Expert‑level Python skills.
• Extensive experience in software engineering with a focus on designing and implementing high‑performance, scalable systems.
• Experience working cross‑functionally with Product and Research teams.
• Experience in cloud technologies (emphasis on Azure) and deployment practices, ensuring seamless and scalable delivery.
• Experience working with ML and Data Science teams, product ionizing ML solutions.
• Proven ability to uphold coding and design standards to ensure high‑quality, maintainable code.
• Effective communication skills, with experience communicating with both technical and non‑technical colleagues.
• Working knowledge of Dev Ops, including CI/CD pipelines, automated testing, and monitoring.
• Experience in Fintech is a plus.

Education
Degree in Engineering, Computer Science, Data Science, Statistics, Mathematics, Physics, or related field, or equivalent work experience.

• High‑impact projects: pioneer AI products and leverage extensive datasets to solve high‑value challenges.
• Competitive benefits: market‑leading compensation package, great benefits, and ongoing investment in career growth and skill development.
• Industry leadership: deliver brand‑new products that democratize modeling and analytics solutions.
• Career progression: opportunities for continuous learning and development in a growing organization.
• Flexible work arrangements: a hybrid approach with at least one day per week in the office.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days, and wellbeing initiatives.

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.

Career Stage
:
Manager

London Stock Exchange Group (LSEG) is a leading global financial markets infrastructure and data provider. Our purpose is to drive financial stability, empower economies, and enable customers to create sustainable growth. Our values of Integrity, Partnership, Excellence, and Change underpin our purpose and guide our everyday actions.

Working with us means you will be part of a dynamic organisation of 25,000 people across 65 countries, while we value individuality and encourage diversity of thought.

LSEG is committed to sustainability and partners with customers to help 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.