About Us We are a leading global financial technology company transforming how the securities finance industry trades, settles, and analyzes data. Our award-winning Trading, Post-Trade, Data & Analytics, RegTech, and SaaS solutions power efficiency, transparency, and innovation for over 200 of the world’s top financial institutions. Every month, our platform supports over $2.4 trillion in executed transactions, a testament to our technology’s impact and reliability. With offices across North America, UK&I, and APAC, we bring together diverse teams of technologists, data experts, and business professionals who thrive on solving complex challenges at scale. We are Great Place to Work Certified™ in the US, UK, Ireland, and India and have been recognized for Diversity & Inclusion excellence as well as for being the Best Post-Trade Service Provider and Best Market Data Provider Globally (Securities Finance Times Industry Excellence Awards, 2023). Founded in 2001 by ten of the world’s leading financial institutions, we continue to shape the future of securities finance under the majority ownership of Welsh, Carson, Anderson & Stowe (WCAS) alongside founding shareholders and customers including Bank of America, Bank of New York, BlackRock, Goldman Sachs, Morgan Stanley, National Bank of Canada, State Street, UBS and Wells Fargo. Join us and be part of a company where global impact, innovation, and collaboration define how we work and what we build. About the role We are looking for a Senior Software Developer to join us in London, contributing to the high-performance C++ software that powers global trading activity across major financial markets. Our team develops advanced trading applications that handle complex capital markets workflows, ensuring reliability and scalability under real-time trading conditions. You will be part of a collaborative global engineering group that designs, builds, and maintains systems critical to traders and operations teams worldwide. This role is ideal for an experienced developer with a deep understanding of C++ who enjoys solving complex system-level challenges and optimizing performance in distributed environments. What you’ll do Design, develop, and enhance high-performance trading applications using modern C++ (C++17 or later), ensuring optimal speed, scalability, and maintainability. Build and maintain services running on Red Hat Enterprise Linux and AWS cloud environments, ensuring reliability and resilience under high-load conditions. Collaborate with global teams to refine requirements, design scalable solutions, and ensure seamless integration across distributed systems. Apply best practices in software design, leveraging design patterns and data structures to deliver efficient and maintainable solutions. Write high-quality, testable, and performant code following rigorous code review and automated testing processes. Support production deployments across single-tenant and multi-tenant environments, ensuring stability and robustness under real-world trading volumes. Contribute to architectural discussions and continuous improvement initiatives to evolve our technology stack and development practices. What we’re looking for 8 years of commercial software development experience, ideally in financial technology or other high-performance, low-latency environments. Expert-level proficiency in C++, with solid knowledge of modern standards (C++17 or later) and strong command of STL, templates, and memory management. Experience developing software in Linux/Unix environments, with a focus on performance optimization and multithreading. Strong understanding of software design principles, patterns, and data structures. Familiarity with SQL and relational databases such as Oracle, SQL Server, or MariaDB/MySQL. Excellent problem-solving skills and the ability to collaborate across distributed teams. Nice to have skills Experience with Java and frameworks such as Spring Boot. Familiarity with JavaScript frameworks such as Angular or Sencha Ext JS. Understanding of securities finance, stock borrow loan, or repo products. Exposure to AWS services and messaging platforms Experience building or maintaining automated testing frameworks for C++ applications. Benefits Hybrid Working: Enjoy the flexibility of working remotely for up to 100 days each year. Discretionary Annual Cash Bonus: A discretionary annual cash bonus is available to reward your performance and contributions to the company’s success. Generous Holiday Days Per Annum: In addition to bank holidays, you’ll have 25 holiday days per year. Group Risk and Income Protection Coverage: Enjoy peace of mind with comprehensive group risk and income protection coverage for you and your dependents. Optional Health and Dental Insurance Cover: Comprehensive health and dental insurance coverage for you and your dependents available from your first day. Generous Company Pension: Our pension plan offers a flat 7.5% company contribution when you contribute a minimum of 1.5%. Diversity & Inclusion At EquiLend, we are committed to fostering an inclusive and diverse workplace where everyone is respected and valued. We believe that a variety of perspectives drives innovation and strengthens our success. If you require any reasonable accommodations during the interview process, please let us know - we’re here to support you. LI-Hybrid