Senior kdb+ Developer

🔒 Confidential Employer
Posted 6 May 2026
LOCATION
Belfast
TYPE
Full-time
LEVEL
Mid-Senior level
CATEGORY
Technology
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion

SKILLS

kdb+ q Time-series data Unix/Linux Scripting Technical leadership Capital markets Python

FULL DESCRIPTION

Senior kdb+ Developer

Company: [Employer hidden — sign up to reveal] | Location: Belfast | Type: Full-time | Hybrid

Every query matters. Every millisecond counts. Every system you build shapes the future of data-driven finance. At [Employer hidden — sign up to reveal], we thrive on solving complex data challenges in high-stakes environments. We’re a team of engineers, problem-solvers, and collaborators who believe in pushing boundaries, not egos.

Job Details

  • Reference: REF174Z
  • Department: Time Series Data
  • Location: Belfast Office, Suite 5, Sturgeon Building, 9-15 Queen Street, Belfast, BT1 6EA
  • Contract Type: Full-time
  • Experience: Mid-Senior Level
  • Industry: Information Technology And Services
  • Closing Date: 01/06/2026

Requirements

  • 5+ years of hands-on kdb+ development, with deep expertise in q and time-series data.
  • Proven experience designing and implementing kdb+ architectures and scaling kdb+ systems in production.
  • Strong background in Unix/Linux environments and scripting.
  • Demonstrated technical leadership and decision-making in fast-paced projects.
  • Excellent communication skills to explain complex systems to both technical and non-technical stakeholders.
  • Experience in capital markets or investment banking to understand the domain and its demands.
  • A passion for clean, performant code and continuous improvement.
  • Bonus: Experience with Python, cloud platforms (AWS, GCP, Azure), or other time-series databases.
  • Bonus: Exposure to tick data, real-time analytics, or electronic trading systems.
  • Bonus: People management or team leadership experience.

Responsibilities

  • Lead technical delivery on client projects, setting the standard for quality and performance.
  • Design and implement robust kdb+ architectures that handle billions of rows of time-series data.
  • Collaborate with quants, traders, and analysts to translate business needs into performant, efficient code.
  • Mentor and guide junior and mid-level developers, fostering a culture of technical excellence and knowledge sharing.
  • Own the full development lifecycle by developing, testing, supporting and maintaining all code for client applications.
  • Drive innovation by staying ahead of the curve in kdb+, q, and adjacent technologies.

Benefits

Hybrid working, referral scheme, travel opportunities, healthcare cover, holiday entitlement, continual professional development.

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