KDB/q Developer - Selby Jennings

A leading global investment firm is seeking a talented KDB+ Engineer to join its high-performance technology team in London. This is an opportunity to work at the heart of a cutting-edge trading environment, building and optimising the real-time data platforms that power systematic trading, quantitative research, and investment decision-making across global markets. You'll work alongside world-class engineers, quantitative researchers, and traders, helping to develop highly scalable KDB+/q solutions that process vast amounts of market data with a focus on performance, reliability, and innovation. This role is ideal for someone who enjoys solving complex technical challenges, working in a fast-paced environment, and having a direct impact on the success of a sophisticated trading business. What You'll Be Doing • Designing, building, and enhancing KDB+/q applications that underpin real-time trading and research systems • Developing and maintaining critical market data infrastructure across trading, analytics, risk, and compliance functions • Creating APIs, schemas, and data models that support trading platforms, quantitative research workflows, and simulation environments • Optimising system performance, scalability, resilience, and latency across large-scale data platforms • Partnering closely with traders, quantitative researchers, and software engineers to deliver high-impact technology solutions • Investigating production issues and ensuring the robustness of business-critical trading applications • Driving continuous improvements to platform architecture, tooling, and engineering standards What We're Looking For • Strong commercial experience with KDB+/q • Proficiency in Python and its application within data-intensive environments • Solid Linux/Unix systems knowledge • Experience working with financial market data and real-time trading systems • Strong problem-solving abilities and a passion for building high-performance systems • Excellent communication skills with the ability to collaborate across technology and front-office teams