Senior Software Engineer

As a Senior Engineer, you’ll build with purpose — solving real-world problems with measurable impact.

• Design, build, and scale next-gen index platforms used by global financial institutions.
• Develop clean, efficient, and secure backend code in C# .NET and cloud-native architectures.
• Create intuitive, responsive UIs using Angular and modern JavaScript frameworks.
• Implement RESTful APIs, microservices, and automated CI/CD pipelines for rapid delivery.
• Work with big data systems and databases like SQL Server, Sybase, and PostgreSQL.
• Contribute to code reviews, mentor peers, and help shape a world-class engineering culture.
• Partner with global teams to define new solutions across cloud, data, and analytics.
• Analyze production problems & provide troubleshooting & support.
• Work with upstream and downstream development teams to implement functionality.
• Work with QA teams to design test cases and to implement automated test drivers.
• Promote a culture of teamwork, high performance and quality via code reviews, ensuring standards and best practices are followed via agile methodologies.
• Communicate with clarity, precision, and influence, presenting complex information in a clear and concise format that is appropriate for the audience
• Drive a culture of engineering excellence through mentorship, peer reviews, and promoting standard methodologies in software design and development

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 purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce. You will be part of a collaborative and creative culture where we encourage new ideas and are committed to sustainability across our global business. You will experience the critical role we have in helping to re-engineer the financial ecosystem to support and drive sustainable economic growth. Together, we are aiming to achieve this growth by accelerating the just transition to net zero, enabling growth of the green economy and creating inclusive economic opportunity.

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.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

Experience Level

Senior Level