Senior KDB+ Developer

About the Position

We are seeking an experienced Senior KDB+ Developer to design, develop, and optimize high-performance data platforms built on kdb+. The ideal candidate will have deep expertise in kdb+ tick architecture, performance tuning at scale, and close collaboration with business stakeholders-particularly within Risk functions-to deliver robust, efficient, and maintainable solutions.

Responsibilities

• Design, develop, and maintain kdb+ tick systems with a strong understanding of data organization, schema design, and the performance implications of different architectural approaches.
• Build and operate solutions handling large-scale, high-frequency datasets, ensuring low latency, high throughput, and efficient memory usage.
• Analyze and optimize q queries, data models, and ingestion pipelines for both real-time and historical workloads.
• Collaborate closely with Risk function teams to translate business requirements into efficient, scalable, and performant code.
• Drive continuous improvement through refactoring, performance benchmarking, and adoption of best practices.
• Mentor and guide junior and mid-level developers, fostering a culture of technical excellence, code quality, and knowledge sharing.
• Participate in design reviews, production support, and root cause analysis of complex system issues.
• Work collaboratively within an Agile or iterative delivery environment, contributing to design, implementation, testing, and release phases.

Requirements

• Must have

  • 8+ years of hands-on experience in kdb+ development in a production environment.
  • Strong expertise in q language including: table design (splayed, partitioned, segmented), in memory vs on disk trade-offs, efficient joins, aggregation, and windowed analytics.
  • Deep understanding of kdb+ tick architecture including ticker plant, RDB, HDB, and associated patterns.
  • Proven experience working with large datasets and optimizing queries for performance and scalability.
  • Strong background in Unix/Linux environments, including shell scripting for automation, monitoring, and operational tooling.
  • Solid understanding of software delivery processes and methodologies (Agile, CI/CD, Version control, release).
  • Ability to communicate clearly with both technical and non-technical stakeholders, demonstrating systematic reasoning and problem-solving skills.

• Nice to have

  • Knowledge of inter-process communication mechanisms in kdb+ and integration with external systems.
  • Experience tuning kdb+ systems for low-latency and high availability.
  • Familiarity with data quality checks, validation frameworks, and operational resilience patterns.
  • Exposure to financial markets data (market data, trading, risk, post-trade workflows, equity asset class).
  • Passion for writing clean, efficient, and well-structured code.

We Offer

• Relocation options
• Experience in an international environment
• Cross-cultural experience
• Feedback culture
• Regular appraisals
• Annual holiday - 20 or 26 days (depending on seniority)
• Occasional leave - 1 or 2 days (depending on circumstances)
• Child care leave - 2 days or 16 hours per year
• Absence due to force majeure - 2 days or 16 hours per year
• Maternity Leave - 20 weeks
• Parental Leave - 41 weeks
• Paternity Leave - 14 days
• Expert-led tech courses covering basic to advanced topics
• Internal instructor-led soft skills courses
• Comprehensive in-house self-learning resources for both soft and hard skills
• Access to external self-learning libraries like ProQuest eBook and Udemy for Business
• Cloud Programs: MS Cloud Academy, AWS Partner Academy, Google Cloud Academy
• Custom Learning Programs: upskilling, reskilling, technical mentorship
• Leadership Programs for Managers
• Multisport card
• Possibility to order Multisport card at the corporate rate for family members
• LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.
• One Team Program: Buddy for each New Joiner; seminars, meeting, and workplace space to support integration with local community and culture; “Hire me” workshops for partners
• Preferential banking offer
• Preferential car leasing offer
• Cafeteria program discounts for shops, cinema tickets, holiday offers
• Luxoft Social Benefit Fund: sport and recreation benefits, the possibility to receive financial support
• Private Healthcare Insurance with unlimited access to specialists
• Full dental support
• Travel Insurance
• Possibility to add private healthcare coverage for family members at the corporate rate
• Life insurance at the corporate rate for employees and family members, including payment of the basic package for the employee by the employer
• Reimbursement for corrective glasses
• Many fun social activities organized by the Luxoft team offline in your city
• Online entertainment events for the whole company and local team events
• A workplace where you’re treated with respect within a multicultural team
• Rotation between projects and accounts
• New career opportunities

About the Company

DXC Luxoft is a leading global provider of digital transformation and technology services. We empower businesses to thrive in the digital era by delivering innovative solutions that drive growth, efficiency, and customer satisfaction. Our team of experts is dedicated to helping clients navigate the complexities of the digital landscape and achieve their strategic goals.

Apply Now

Interested candidates are invited to apply for the Senior KDB+ Developer position in Krakow, Poland. Please submit your resume and any relevant documents through our application portal.

*The acquisition of rights to the above benefits depends on the form of cooperation. Benefits apply to those employed under a contract of employment.

**Please note that relocation is not available for all open positions. At Luxoft Poland it is possible to work remotely only from the territory of Poland.

Req. VR-122355