> Markdown version of [/jobs/ext/2308428-kdb-q-developer](https://www.wearedevelopers.com/jobs/ext/2308428-kdb-q-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # KDB+/q Developer - **Company:** Selby Jennings - **Location:** London, UK - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Algorithmic Trading, Data Analysis, Big Data, Systems Theories, Python (Programming Language), KDB+, Low Latency - **Published:** August 30, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815450100-kdbq-developer ## About the Role * 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 ## Description * 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 ## Related Videos - [Alibaba Big Data and Machine Learning Technology](https://www.wearedevelopers.com/videos/37-alibaba-big-data-and-machine-learning-technology) - [Microservices architecture as a key element in building trading systems for global finance markets](https://www.wearedevelopers.com/videos/1196-microservices-architecture-as-a-key-element-in-building-trading-systems-for-global-finance-markets) - [Swapping Low Latency Data Storage Under High Load](https://www.wearedevelopers.com/videos/746-swapping-low-latency-data-storage-under-high-load) - [Enjoying SQL data pipelines with dbt](https://www.wearedevelopers.com/videos/823-enjoying-sql-data-pipelines-with-dbt) - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) - [Unleash the power of 5G in your code: transform your apps](https://www.wearedevelopers.com/videos/1567-unleash-the-power-of-5g-in-your-code-transform-your-apps) ## Related Articles - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Data Analyst Salary in the UK](https://www.wearedevelopers.com/magazine/278-data-analyst-salary-in-the-uk) - [The 13 Best Python Libraries for Developers in 2025](https://www.wearedevelopers.com/magazine/371-the-13-best-python-libraries-for-developers-in-2025) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)