Quantitative Developer

Job Description London Stock Exchange Group is looking for an application developer to join a team of Fixed Income Analytics Application Development.

• Design and develop fixed income analytics applications, used by front office for trading and investment decision-making
• Implement and enhance the Structuring Tool for securitized products, used for Securitized Product analysis and marketing
• Maintain and modernize the existing codebase while preserving product stability
• Use AI coding assistants and agentic tools to accelerate development, testing, and code understanding
• Partner with product management and client service teams to solve product issues and deliver new features
• Create unit tests and integration tests to ensure software meets requirements
• Work closely with the Quality Engineering team to ensure the high quality of the deliverables

• An advanced degree (master’s or higher) in a quantitative field such as Financial Engineering, Computer Science, Physics, Engineering, Mathematics, etc.
• Excellent programming skills in one of the languages (C/C++, .NET, Java or Python)
• 1 to 3 years of financial industry experience or academic training
• Hands‑on experience using AI coding assistants (e.g. Git Hub Copilot, Claude, Cursor) in real development work
• Strong code review skills applied to AI output — quickly assessing, validating, refining and testing AI-generated code
• Experience with automated testing and version control
• Strong teamwork and communication skills, with the ability to collaborate effectively with cross‑functional teams
• Excellent problem‑solving skills and a proactive approach to identifying and resolving issues
• Willingness to learn and develop deep financial knowledge

Senior Associate

LSEG is committed to offering competitive Compensation and Benefits. The anticipated base salary for this position is $98,500 - $164,100. Please be aware base salary ranges may vary by geographic location, city and state. In addition to our offered base salary, this role is eligible for our Annual Incentive Plan (AIP/”bonus plan”). Target AIP rates will be commensurate with role level and posted career stage.

Individual salary will be reflective of job related knowledge, skills and equivalent experience.

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
• Company match
• basic life insurance
• disability benefits
• emergency backup dependent care
• adoption assistance commuter assistance etc.

LSEG roles (excluding internships and part-time roles of less than 20 hours per week) are typically eligible for inclusion in our LSEG Benefits program, which includes offerings of:
Annual Wellness Allowance, Paid time-off, Medical, Dental, Vision, Flex Spending & Health Savings Options, Prescription Drug plan, 401(K) Savings Plan and Company match.

LSEG’s Benefits plan also includes basic life insurance, disability benefits, emergency backup dependent care, adoption assistance commuter assistance etc.

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you. 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…