Senior kdb+ Developer – BestXWe are seeking an experienced Senior kdb+ Developer to join the BestX engineering team. In this role, you will design, build, and optimise high‑performance data platforms using kdb+, supporting BestX’s multi‑asset analytics capabilities.
The ideal candidate brings deep expertise in kdb+ tick architectures, large‑scale performance tuning, and works closely with quantitative and engineering teams to deliver robust, efficient, and maintainable solutions.
Key Responsibilities- Design and develop key components of BestX’s multi‑asset analytics platform.
- Architect, build, and maintain kdb+ tick systems, with strong consideration for data organisation, schema design, and architectural trade‑offs.
- Develop and operate systems that process large‑scale, high‑frequency datasets, ensuring low latency, high throughput, and efficient memory utilisation.
- Analyse and optimise q queries, data models, and ingestion pipelines for both real‑time and historical workloads.
- Apply modern Agile development practices across cloud‑based, server‑side, and database‑driven systems.
- Build a strong understanding of Transaction Cost Analysis (TCA) and key regulatory benchmarks required for MiFID and MiFIR.
- Take full ownership of deliverables, driving work through from design to production.
- Establish and promote best practices, clean code standards, and sound design patterns.
- Act as a change agent, continuously improving engineering standards and ways of working.
- Champion Test‑Driven Development and “shift‑left” practices to support effective CI/CD pipelines.
Core (Must‑Have) Skills and Experience- 5+ years of hands‑on kdb+ development experience.
- Strong expertise in kdb+/q and Python.
- Proficiency with modern data science toolchains, including Jupyter, pandas, NumPy, scikit‑learn, with applied machine‑learning experience.
- Solid understanding of parallel computing frameworks such as Slurm or equivalent technologies.
- Strong background in quantitative analysis, including mathematical modelling, statistics, regression, and probability theory.
- Bachelor’s or Master’s degree in Computer Science, Mathematics, Statistics, or a related STEM discipline from a top‑ranked university.
- Hands‑on experience with AWS and/or other modern cloud‑based infrastructure.
Nice‑to‑Have Skills- Domain knowledge in FX, Fixed Income, Equities, or Equity Derivatives.
- Additional expertise with kdb+ in complex, production‑scale environments.
- Exposure to modern JavaScript build toolchains, including Node.js, npm, Rush, Yarn, Webpack, Babel, and Cypress.
Salary Range: $125,000 - $226,250 Annual
The range quoted above applies to the role in the primary location specified. If the candidate would ultimately work outside of the primary location above, the applicable range could differ.
Employees are eligible to participate in State Street’s comprehensive benefits program, which includes: our retirement savings plan (401K) with company match; insurance coverage including basic life, medical, dental, vision, long-term disability, and other optional additional coverages; paid-time off including vacation, sick leave, short term disability, and family care responsibilities; access to our Employee Assistance Program; incentive compensation including eligibility for annual performance-based awards (excluding certain sales roles subject to sales incentive plans); and, eligibility for certain tax advantaged savings plans.
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