Senior C++ Engineer - Low-Latency Trading Tech

London Stock Exchange Group; St. Louis, Northern (MO, KY); Hybrid; USD 110,000 - 140,000; Full time

Job summary

London Stock Exchange Group (LSEG) invites applications for a Senior Associate role focused on high-performance C++ software development. The position emphasizes ownership of complex projects, strong problem solving, and collaboration across engineering, product, and operations teams.

The successful candidate will contribute to scalable, low-latency systems, apply test-driven development, and mentor junior developers while advancing personal and team growth in a dynamic global environment.

Qualifications

• 5+ years of full life-cycle software development experience.
• 3+ years of object oriented development in C++.
• Excellent communication skills (written and oral).
• Ability to collaborate in a team focused environment.
• Strong analytical skills and passion for solving problems.
• Ability to thoroughly test and debug code using test driven development.
• Ability to research and adopt new technologies quickly.
• Ability to work with Technical Architects and Product Owners to build to specification.
• Object oriented design skills.

Responsibilities

• Implement performance and tuning modules for high throughput and reliability.
• Identify bottlenecks and bugs in codes and devise solutions.
• Maintain code quality, design and refactor for best performance.
• Ensure code quality with peer code reviews and feedback.
• Develop automated tests.
• Coordinate with QA and Operations on application change controls and performance issues.
• Analyze KPIs, liaise with cross-functional teams to improve bottlenecks.

Skills

5+ years of full life-cycle software

3+ years of object oriented C++

Superb communication skills

Team collaboration

Analytical thinking

Test-driven development

Research new technologies

Collaborate with Architects/Product

Object oriented design

Job description

London Stock Exchange Group (LSEG) invites applications for a Senior Associate role focused on high-performance C++ software development. The position emphasizes ownership of complex projects, strong problem solving, and collaboration across engineering, product, and operations teams.

The successful candidate will contribute to scalable, low-latency systems, apply test-driven development, and mentor junior developers while advancing personal and team growth in a dynamic global environment.