Senior C++/Java Engineer — Scalable Systems

London Stock Exchange Group; Greater London; On-site; GBP 90,000 - 140,000; Full time

Job summary

London Stock Exchange Group (LSEG) is seeking a Senior C++/Java Developer in London. The role focuses on designing, developing, and delivering high-quality software solutions across C++ and Java stacks within a defined product or platform area.

You will collaborate with senior engineers, architects, and product managers to translate requirements into robust, scalable designs, while mentoring junior engineers and maintaining high code quality and test coverage.

Qualifications

• Strong hands-on software engineering experience in C++ and Java.
• Experience delivering medium-to-large scale systems.
• Solid understanding of OO design, data structures, algorithms, concurrency.

Responsibilities

• Design, develop, and maintain C++ and Java applications and services.
• Improve platform stability, scalability, and client outcomes.
• Provide technical guidance and mentor junior engineers.
• Participate in code reviews and design discussions.
• Support full lifecycle delivery from design to production.

Skills

C++

Java

Education

Bachelor's degree in Computer Science

Job description

London Stock Exchange Group (LSEG) is seeking a Senior C++/Java Developer in London. The role focuses on designing, developing, and delivering high-quality software solutions across C++ and Java stacks within a defined product or platform area.

You will collaborate with senior engineers, architects, and product managers to translate requirements into robust, scalable designs, while mentoring junior engineers and maintaining high code quality and test coverage.