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C++ Developer - Exchange Feeds

Job in St. Louis, Saint Louis, St. Louis city, Missouri, 63105, USA
Listing for: LSEG
Full Time position
Listed on 2026-07-10
Job specializations:
  • Software Development
    Software Engineer, C++ Developer, Unix/Linux
Salary/Wage Range or Industry Benchmark: 120000 - 180000 USD Yearly USD 120000.00 180000.00 YEAR
Job Description & How to Apply Below
Location: St. Louis

We have an immediate opening for a low-latency C++ developer. We’re building the next generation of capital markets technology. Global capital markets are an ocean of fast-moving, interrelated and complex data. We are looking for passionate and enthusiastic problem-solvers with expertise in capital markets data to join us as we continue providing technology innovation and support to the world’s leading global capital markets companies.

Current

strategic pursuits

In this role, you will be part of a talented and open-minded software team that works on mission-critical applications within capital markets technology. You will have the opportunity to contribute to all phases of the development lifecycle – from suggesting the use of emerging technologies to designing, integrating, and upgrading complex architecture.

We’re looking for outstanding C++ developers interested in employing the latest features of C++ to increase our platform’s functionality across asset classes, data sets, and business verticals. Developers on our team have the rare opportunity to work on challenging and important problems as they transform high-quality raw data into actionable insight.

Duties include
  • Develop – Write extremely high-quality, reusable and reliable C++ code
  • Problem solve – Use code to solve challenging problems that affect a wide range of capital markets players
  • Collaborate - Interact with adjacent business functions including sales, product development, and client support
  • Level 3 support – analyze and solve complex problems, proactively work to enhance our support functionality, and client service experience. Occasional technical conversation with customers.
  • Exchange specialist – Research and comprehend exchange rules and formats for both public market data and order entry systems
  • New technology – Work with state-of-the-art hardware (top-line CPUs, NVME, Solarflare, ExaNIC)
  • Research – Explore and implement new advanced C++ features and frameworks
Work qualifications
  • Excellent C++ skills, including hands on experience with C++17 or later and familiarity with ‘Concepts’ from C++20
  • Significant experience with C++ in a Linux environment
  • Strong work ethic and a commitment to seeing tasks through
  • Excellent problem-solving skills
  • Superb English communication
Nice to have
  • Some Java/JNI & Python experience
  • Experience with low-latency market data feeds
  • Experience with Kernel Bypass technologies
  • Knowledge of network protocols and familiarity with tools like tcpdump and Wireshark
  • Experience with sanitizers like ASan, MSan, UBSan, TSan
Career Stage:

Senior Associate

Benefits

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

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