Junior Data Engineer (KDB)

GFT Technologies Poland; Kraków; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Hybrid work in Kraków office

Medical package

Lunch subsidy

Life insurance

Job summary

GFT Technologies Poland is seeking a skilled KDB+ engineer to join our AI Markets development team. You will optimize KDB+ processes, build analytics layers, and expose data through APIs for trading and AI/ML applications.

You will collaborate with global teams across Europe, Asia, and North America to deliver scalable data solutions. You will work on data preparation for model training, implement monitoring and resilience, and ensure governance and risk controls while solving complex data

Qualifications

• Strong CS fundamentals and passion for solving complex data engineering problems.
• Experience with functional programming concepts (Clojure, Haskell, Scala).
• Experience preparing datasets for model training and analytics pipelines.
• Familiarity with APIs, data governance, and performance optimization.

Responsibilities

• Develop and optimize KDB+ processes and queries for low-latency/high-throughput applications.
• Build analytics and aggregation layers consumed by downstream systems, APIs, and AI/ML models.
• Expose KDB+ data and analytics via APIs and services.
• Collaborate with AI and data engineering teams to prepare data for model training and execution.
• Implement monitoring, alerting, and capacity management for KDB+ environments.
• Support resilience, failover, and disaster recovery capabilities.
• Collaborate with traders, quants, sales teams, and product owners to deliver business solutions.
• Ensure compliance with operational risk, model risk, and data governance requirements.
• Participate in data analysis, testing, and software delivery activities.

Skills

KDB+/q

Functional programming

Python/R/Matlab

Clojure/Haskell/Scala

Linux

Cloud platforms

Algorithms & data structures

Problem solving

APIs & data analytics

Tools

KDB+/q

Job description

You will join the AI Markets development team and work with KDB+/q, one of the most advanced time-series database technologies used in financial markets. The team delivers reporting, analytics, and management information for traders, quants, sales teams, senior management, and external clients. You will help develop high-performance data solutions, optimize access to large datasets, and support AI Markets capabilities through scalable analytics and APIs while collaborating with global teams across Europe, Asia, and North America.

• Develop and optimize KDB+ processes and queries for low-latency and high-throughput applications
• Build analytics and aggregation layers consumed by downstream systems, APIs, and AI/ML models
• Expose KDB+ data and analytics through APIs and services
• Work with AI and data engineering teams to prepare datasets for model training and execution
• Implement monitoring, alerting, and capacity management for KDB+ environments
• Support resilience, failover, and disaster recovery capabilities for critical services
• Collaborate with traders, quants, sales teams, and product owners to deliver business solutions
• Ensure compliance with operational risk, model risk, and data governance requirements
• Participate in data analysis, testing, and software delivery activities
• Analytical mindset with a passion for solving complex data engineering problems
• Strong computer science fundamentals
• Knowledge of functional programming concepts or experience with languages such as Clojure, Haskell, or Scala
• Interest in vectorized programming approaches using Python, R, Matlab/Octave, or Wolfram Mathematica
• Passion for technology, automation, and continuous improvement
• Interest in large‑scale data processing and basic statistical concepts
• Knowledge of or willingness to learn Linux and client‑server technologies
• Interest in cloud infrastructure and AI/ML technologies
• Ability to understand requirements and translate them into technical solutions
• Strong collaboration and problem‑solving skills

Nice to have

• Knowledge of KDB+/q
• Experience with financial markets or trading systems
• Knowledge of API development
• Experience with cloud platforms
• Understanding of monitoring and observability tools
• Exposure to AI/ML projects

We offer

• Hybrid work in our client's office (Kraków) 8 days a month
• Working in a highly experienced and dedicated team
• Benefit package tailored to your needs (medical, sport, lunch subsidy, life insurance, etc.)