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From the employer's careers site First seen 12 Nov 2026

C++20 Developer

Salary

86,700€ - 144,500€ per year

Apply on London Stock Exchange Group (LSEG)

Description

We are seeking an experienced C++20 Developer to join our team in building the next generation of capital markets technology. As a C++20 Developer, you will contribute to all phases of the development lifecycle, from suggesting emerging technologies to designing, integrating, and upgrading complex architecture.

Responsibilities:

  • Develop high-quality, reusable, and reliable C++20/23 code
  • Problem-solve and use code to solve challenging problems affecting capital markets players
  • Collaborate with adjacent business functions, including sales, product development, and client support
  • Provide Level 3 support, analyzing and solving complex problems, and proactively enhancing support functionality and client service experience
  • Research and comprehend exchange rules and formats for public market data and order entry systems
  • Work with state-of-the-art hardware, including top-line CPUs, NVME, Solarflare, and ExaNIC
  • Explore and implement new advanced C++ features and frameworks

Requirements:

  • Excellent C++ skills, including hands-on experience with C++20 or later
  • Extensive experience with C++20 in a Linux environment
  • Strong work ethic and commitment to seeing tasks through
  • Excellent problem-solving skills
  • Superb English communication

Nice to Have:

  • Experience with Solarflare, low-latency NICs, and FPGA
  • Experience with market data capture
  • Experience with perf and Kernel Bypass technologies
  • Knowledge of network protocols and familiarity with tools like tcpdump and Wireshark
  • Experience with sanitizers like ASan, MSan, UBSan, and Tsan

Compensation Information:

  • Anticipated annual gross base salary: 86,700€ - 144,500€
  • Eligible for Annual Bonus Plan

Benefits Information:

  • LSEG Benefits program, including 26 weeks' parental leave, healthcare, retirement planning, and wellness allowance

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Skills

Required

  • C++20
  • Linux
  • problem-solving
  • English communication

Nice to have

  • Solarflare
  • low-latency NICs
  • FPGA
  • market data capture
  • perf
  • Kernel Bypass technologies
  • network protocols
  • tcpdump
  • Wireshark
  • ASan
  • MSan
  • UBSan
  • Tsan

Ready to apply?

You apply with the employer directly. Their original posting is here: https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/ITA-Milan-Piazza-Armando-Diaz-2/C---20-Specialist_R0125153

Apply on London Stock Exchange Group (LSEG)