Senior Developer- KDB/ eTrading /eFX / London/Hybrid

  • GCS
  • City, London
  • Mar 11, 2026
Contractor Accounting

Job Description

Principal responsibilities

  • Develop key parts of the Global FX MI and Analytics platform
  • Work closely with quants and electronic tech team in implementing fit-for-purpose solutions
  • Contribute to designing and architecting tick, data access, feeds and scalable analytic solutions
  • Implement API-based functionality
  • Contribute to and expand common components, tools and APIs
  • Focus on automation around metrics, builds and testing

Skills Required:

  • Test-Driven / Behaviour-Driven Development with emphasis on specification-based testing
  • Strong analytical and problem solving skills with demonstrable knowledge of market data, trade data and basic statistical concepts
  • Ability to query, analyse and combine vast amounts of data
  • Team player with excellent communication skills
  • In depth-Understanding of q language structures and writing performant code
  • Familiar with kdb tick architecture
  • Ability to adjust to a dynamic environment
  • Appreciates differences in style or perspective and uses differences to add value to decisions
  • Exposure to all aspects of SDLC, including build automation, deployment and support
  • Experience in a second programming language (whether oo or functional) greatly valued

GCS is acting as an Employment Business in relation to this vacancy.