Senior KDB+/Q Developer

  • £80,000 - £90,000
  • London, England, United Kingdom London England GB
  • Permanent, Full time
  • Investment Technology Group (UK)
  • 22 Mar 18 2018-03-22

ITG is looking for an experienced senior-developer to join a growing team of KDB+/Q software engineers to work on a large-scale, entirely from-scratch, green-field project. The goal of the project is to build a firm-wide central data-platform across all asset-classes, providing market, transactional, and reference data and analytics via multiple interfaces (Q, Python, Java, etc). This platform will be the primary source of all real-time and historical data-requests at the firm.

Job Opening Date: 07/03/2018

Job Closing Date: 11/04/2018

Salary Range: £80,000 - £90,000

Type of Employment: Permanent

Here at ITG, technology is our middle name. Literally. With nearly half of our staff working in technology roles, our technologists empower our business to provide best-in-class service to our clients around the world. From conceptualizing ideas to bringing them to market, ITG engineers work alongside our business units to build technology for institutional traders that enables them to improve returns for investors. 


  • Help build a new and dynamic KDB+ core framework at the firm with the latest version of KDB+ (3.5+) – to be extended by all KDB+ projects at the firm
  • Develop new APIs to provide data to real-time subscribers, as well as complex real-time and historical request-reply users (including GUI platforms)
  • Develop feed-handlers, tickerplants, RDBs, etc. for real-time data-capture
  • Develop and manage generic tools and mechanisms to build databases in KDB+ from legacy historical data-sources
  • Think out-of-the-box and build dynamic components outside of the bounds of the conventional KDB+ stack: CEP engines, dynamic caching services, etc.
  • Manage and improve performance in the entire stack as the product grows
  • Help us bridge our API to users in other technologies (Python, R, Java, etc.)
  • Mentor and help train junior developers on the team


  • At least 4-5 years of experience in developing applications in KDB+/Q
  • A full understanding of core KDB fundamentals: partitioned databases, real-time capture, IPC+callbacks, performance tuning, asynchronous gateways, data-compression, multithreading
  • Unix/Linux OS fundamentals: system-level troubleshooting, scripting, managing an environment
  • A basic understanding of financial markets, electronic trading flows, financial data
  • A general understanding of writing scalable code in KDB+
  • A basic understanding of how KDB+ works on a Linux architecture – disk reads/writes, memory management, DOs and DON’Ts
  • (Desired but not required) Experience in developing KDB+ at the framework-level
  • (Desired but not required) Expertise in financial data-standards – e.g.: FIX protocol
  • (Desired but not required) Experience developing in C/C++
  • (Desired but not required) Experience developing in Python


  • Exposure to different technologies, such as C++, Linux, low latency, kernel bypass, machine learning, cloud and high-performance storage
  • Projects with quick life cycles, from concept to client in three months
  • A smaller team environment with 3-8 developers
  • A great place for upward and geographic mobility
  • Direct exposure to the decision makers and senior leaders on the business side
  • A company that’s investing a sizable amount in its technology department
  • Teams that are passionate about continually learning, improving and raising the bar
  • A community that values hard work as well as work-life balance
  • A company that is committed to giving back to surrounding communities, from LA to Hong Kong and Sydney and the 11 locations in between