At a Glance
- Tasks: Design and optimise high-performance data platforms using kdb+ for multi-asset analytics.
- Company: Join State Street, a global leader in financial services with innovative technology.
- Benefits: Enjoy flexible work-life support, paid volunteer days, and inclusive development opportunities.
- Other info: Collaborate with top engineers and quants in a supportive, inclusive environment.
- Why this job: Make a real impact on global financial markets with cutting-edge analytics.
- Qualifications: 5+ years of kdb+ experience and strong skills in Python and data science tools.
The predicted salary is between 63000 - 77000 £ per year.
- Senior kdb+ Developer – Best X
- We are seeking an experienced
Senior kdb+ Developer to join the Best X engineering team.
In this role, you will design, build, and optimise high‑performance data platforms using kdb+, supporting Best X’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 Best X’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 Mi FID and Mi FIR.
- 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, Num Py, 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 Java Script build toolchains, including Node. js, npm, Rush, Yarn, Webpack, Babel, and Cypress.
- About State Street & Best X
State Street is a global financial services leader, combining scale, resilience, and advanced technology to support institutional investors worldwide.
Through investment servicing, trading, data, and analytics, we build mission‑critical platforms that operate at the heart of global financial markets.
Best X
, part of State Street’s Global Markets and Global Link ecosystem, is the industry‑standard, multi‑asset Transaction Cost Analysis (TCA) platform
. Built as a high‑performance analytics platform, Best X processes over one billion market data updates per day
, delivering independent, venue‑agnostic insights across FX, fixed income, and equities.
- World’s Best Provider of TCA Solutions – Euromoney Markets Awards 2025
- Best Transaction Cost Analysis Solution – Waters Technology Asia Awards 2025
- World’s Best New FX Product/Platform for Best Xecutor – Euromoney 2025
Best X and Best Xecutor embed advanced analytics directly into trading workflows, spanning pre‑trade decisioning through post‑trade validation, helping clients improve execution quality and meet evolving regulatory requirements at scale.
At State Street, you’ll work on complex, high‑performance systems alongside leading engineers, quants, and product teams—shaping the future of execution analytics and global market infrastructure in an inclusive, supportive environment.
About State Street
Across the globe, institutional investors rely on us to help them manage risk, respond to challenges, and drive performance and profitability.
We keep our clients at the heart of everything we do, and smart, engaged employees are essential to our continued success.
We are committed to fostering an environment where every employee feels valued and empowered to reach their full potential.
As an essential partner in our shared success, you’ll benefit from inclusive development opportunities, flexible work‑life support, paid volunteer days, and vibrant employee networks that keep you connected to what matters most.
Join us in shaping the future.
As an Equal Opportunity Employer, we consider all qualified applicants for all positions without regard to race, creed, color, religion, national origin, ancestry, ethnicity, age, disability, genetic information, sex, sexual orientation, gender identity or expression, citizenship, marital status, domestic partnership or civil union status, familial status, military and veteran status, and other characteristics protected by applicable law.
- Discover more information on jobs at State Street. com/careers
- Read our CEO Statement
- Job ID: R-
Senior kdb+ Developer, Vice President in London employer: State Street Corp
State Street Corp is an exceptional employer that fosters a collaborative and innovative work culture, empowering employees to thrive in their roles. With a strong focus on professional development and growth opportunities, particularly in the dynamic field of client relationship management, employees can expect to engage with industry leaders while enjoying a supportive environment that values strategic thinking and proactive engagement. Located in a vibrant area, State Street offers unique advantages such as flexible working arrangements and a commitment to employee well-being, making it an ideal place for those seeking meaningful and rewarding careers.
StudySmarter Expert Advice🤫
We think this is how you could land Senior kdb+ Developer, Vice President in London
✨Tap into Campus Networks
If you're still in uni, don’t forget to engage with your campus's career services and attend finance-related events. Banks often do presentations and recruitment drives on campus, so put yourself out there and make use of these opportunities to show off your passion for the field.
✨Get Certified
Consider pursuing relevant certifications like the CFA or ACCA while you’re job hunting. They not only beef up your CV but also connect you with professional bodies which can lead to networking opportunities and even job openings in banking and financial services.
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Join finance-focused groups on platforms like LinkedIn and engage in discussions. This can really help you stand out from the crowd, allowing potential employers to see your knowledge and interest in industry trends. Plus, you might stumble upon job postings shared exclusively within the group.
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Don’t shy away from reaching out directly to firms like State Street Corp. Use their websites and apply through them, but also consider following up with a polite email to express your enthusiasm. Being proactive can make a huge difference in getting noticed in the competitive financial services sector.
We think you need these skills to ace Senior kdb+ Developer, Vice President in London
Some tips for your application 🫡
Show Off Your Numbers!:In the banking and financial services world, quantifiable achievements are key. Make sure your CV highlights your grades in relevant subjects, any financial certifications you hold, and specific projects where you've delivered measurable results. Employers love to see how your skills translate into real-world success.
Tailor Your Cover Letter to the Role:When applying for a full-time position, your cover letter should make a direct connection between your experience and the job description. Don't just state your enthusiasm for finance—dive into how your background in banking or financial analysis sets you apart. Let your passion shine through while being specific about what you can bring to State Street Corp.
Include Relevant Financial Software Experience:If you've worked with financial modelling tools or software like Excel, SAP, or specific analytical tools during your studies or internships, bring that up! Highlighting your proficiency can really make your application pop and show you're ready to hit the ground running in a full-time role.
Research and Reflect:Before hitting that 'apply' button on State Street Corp's website, do a little digging. Look up their recent projects, values, and culture. Reflecting their ethos in your application can make a huge difference and show you’re genuinely interested in being part of the team!
How to prepare for a job interview at State Street Corp
✨Brush Up on Financial Analysis Skills
Make sure you're well-versed in financial concepts and analytical techniques relevant to banking and financial services. Get comfortable with tools like Excel for modelling or financial forecasting, as technical questions in this area are common during interviews with State Street Corp.
✨Prepare for Case Studies
Expect to tackle case studies that demonstrate your problem-solving skills in real-world banking scenarios. Familiarise yourself with the types of problems you might face—think risk assessments or investment evaluations—and be ready to articulate your thought process clearly.
✨Show Your Passion for Finance
Since this is a full-time position, employers at State Street Corp will be keen to see your genuine interest in finance. Be prepared to discuss recent industry trends or news articles that excite you, showcasing your enthusiasm and engagement with the field.
✨Network with Industry Professionals
Before your interview, reach out to current or former State Street Corp employees on platforms like LinkedIn. They'll offer unique insights into the company's culture and the interview process, which can give us a delightful edge in showcasing a good fit for the team.
