KDB+ developer

Senior KDD+ Developer

Contract - OUTSIDE IR35

6 months +

Location: ad hoc into London

Rate: DoE, outside IR35

We’re looking for an experienced Senior kdb+ Engineer to join a fast-paced, high-performance technology environment, working on data-intensive financial systems.

This is a hands-on technical role suited to someone with deep expertise in kdb+, q, and time-series data , alongside strong experience designing and scaling production systems.

The Role

You’ll be responsible for delivering high-performance, scalable solutions across complex financial data environments. You will:

• Lead technical delivery across projects, setting high standards for quality, performance, and maintainability.
• Design and implement robust kdb+ architectures capable of handling billions of rows of time-series data.
• Develop high-performance q code and optimise systems for scalability and reliability.
• Collaborate with quants, traders, analysts, and technical stakeholders to translate business requirements into efficient technical solutions.
• Mentor and support junior and mid-level developers , helping to drive technical excellence.
• Own the full development lifecycle , including development, testing, deployment, support, and ongoing maintenance.
• Drive continuous improvement and innovation , keeping up to date with developments across kdb+, q, and related technologies.

What We’re Looking For

• Hands on experience with kdb+ development experience , with deep expertise in q and time-series data .
• Proven experience designing kdb+ architectures and scaling kdb+ systems in production .
• Strong experience working in Unix/Linux environments and with scripting.
• Demonstrated technical leadership and strong decision-making in fast-paced projects.
• Excellent communication skills, with the ability to explain complex technical concepts to both technical and non-technical stakeholders.
• Experience within capital markets or investment banking , with a strong understanding of the domain and its demands.
• A passion for writing clean, performant, maintainable code and continuously improving systems and processes.