Senior KDB+ Developer for Low-Latency Risk Data

Luxoft; Kraków; On-site; PLN 260,000 - 420,000; Full time

Job summary

Luxoft Kraków is seeking an experienced Senior KDB+ Developer to design, develop and optimize high performance data platforms built on kdb+. You will work on kdb+ tick architectures, optimize real-time and historical workloads, and collaborate with Risk teams to deliver robust solutions.

The ideal candidate has 8+ years in kdb+ development, strong q language skills, and a track record of performance tuning in Unix/Linux environments.

Qualifications

• 8+ years of hands-on kdb+ development in production.
• Strong q language skills: 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.
• Familiar with Agile, CI/CD, version control and release processes.

Responsibilities

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

Skills

kdb+ development

q language

data architecture

performance tuning

Unix/Linux

Agile/CI-CD

team mentoring

Tools

CI/CD pipelines

Job description

Luxoft Kraków is seeking an experienced Senior KDB+ Developer to design, develop and optimize high performance data platforms built on kdb+. You will work on kdb+ tick architectures, optimize real-time and historical workloads, and collaborate with Risk teams to deliver robust solutions.

The ideal candidate has 8+ years in kdb+ development, strong q language skills, and a track record of performance tuning in Unix/Linux environments.