Lead C++ / Java Developer in London

Lead C++ / Java Developer in London

London Full-Time No working from home possible
London Stock Exchange

Requirements

  • Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience
  • Strong hands‑on experience in both C++ and Java, delivering production‑grade systems
  • 10+ years of software engineering experience as a senior individual contributor
  • Proven delivery experience with low‑latency, high‑throughput, distributed systems, ideally in FX, trading, or matching platforms
  • Strong understanding of system integration, messaging, event‑driven architectures, and data consistency
  • Experience working across the full SDLC, including design, development, automated testing, deployment, and production support
  • Familiarity with Linux, CI/CD pipelines, build systems, performance testing, and monitoring/alerting
  • Practical experience with cloud platforms, containerization, and open‑source technologies
  • Excellent problem‑solving skills and the ability to influence technical outcomes without formal authority
  • Up‑to‑date with modern engineering practices, tools, and industry trends

What the job involves

  • The Senior Software Engineer is a hands‑on individual contributor responsible for designing, building, and operating mission‑critical FX market infrastructure and matching platforms using C++ and Java
  • The role focuses on low‑latency, high‑throughput distributed systems with strict availability, resiliency, and data integrity requirements
  • This role owns technical outcomes for complex components and services, influences architecture and platform evolution, and provides deep expertise across development, testing, and production support
  • While not a line‑management role, it carries strong expectations for technical leadership, mentoring, and collaboration across engineering, architecture, and product teams
  • Design, develop, and maintain C++ and Java services supporting FX matching and trading workflows
  • Own technical delivery for key platform components, ensuring alignment with LSEG architectural principles, performance standards, and operational controls
  • Build and evolve low‑latency, high‑availability systems handling high message volumes and time‑critical processing
  • Ensure systems meet non‑functional requirements, including latency, throughput, resiliency, fault tolerance, security, and observability
  • Contribute to system and solution architecture, participating in design reviews and providing pragmatic input on scalability and operability
  • Work closely with Product, QA, SRE, and Architecture teams to translate business requirements into robust technical solutions
  • Diagnose and resolve complex issues across production, QA, and client environments, including root‑cause analysis of cross‑system failures
  • Improve code quality and maintainability through clean design, automated testing, performance tuning, and controlled refactoring
  • Integrate and manage dependencies on messaging platforms, data distribution systems, and upstream/downstream market infrastructure
  • Evaluate and adopt suitable open‑source and third‑party technologies, ensuring they meet regulatory, security, and performance requirements
  • Provide technical mentoring through code reviews, design discussions across teams
  • Ensure adherence to SDLC standards, engineering best practices, and operational readiness requirements
  • Contribute recommendations that influence platform standards, engineering patterns, and architectural direction across FX technology

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London Stock Exchange

Contact Details:

London Stock Exchange Recruitment Team