Principal Java Engineer

Type of contract: Employment contract
Salary range: 17400 - 26700 PLN gross

What will you do?

You will work on building a modern, in-house FX trading platform supporting pricing, booking, routing, risk management and valuations. You will be part of a DevOps-oriented team delivering microservices in close collaboration with business stakeholders, contributing directly to a high-performance, low-latency trading environment.

Your tasks

• Develop high-quality Java code for distributed systems
• Automate testing and deployment for frequent releases
• Collaborate with product owners and business on requirements
• Design and build microservices architecture
• Monitor production systems and ensure stability
• Take ownership of services across the full lifecycle
• Implement low-latency and concurrent solutions

Your skills

• Hands-on experience with Java 17+
• Knowledge of concurrency and low-latency programming
• Experience with data structures and functional programming
• Experience with REST APIs and messaging technologies
• Knowledge of TDD and unit testing frameworks
• Understanding of CI/CD and DevOps practices
• Strong communication skills
• Ability to work in agile teams
• Problem-solving mindset and adaptability
• Experience with AI coding assistants

Nice to have

• Knowledge of Foreign Exchange domain
• Interest in trading systems
• Experience with open source contributions
• Passion for software development outside of work

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.)
• Online training and certifications
• Access to e‑learning platform
• Social events