Lead Java Developer

Overview

We are building high-performance Java solutions for Fixed Income Rates and Credit trading desks within a global markets technology organization. As a Lead Java Developer, you will translate trading needs into scalable services, modernize existing components, and partner across regions to keep the platform reliable and fast.

Note:

Working from the office in Krakow 3 days per week is required.

• Design and deliver scalable Java applications that address complex business challenges
• Improve performance and maintainability by optimizing and refactoring existing components
• Facilitate UAT and run demonstrations with key stakeholders
• Convert business requirements into clear technical specifications
• Coordinate with global IT teams to enable seamless integration
• Support production releases and provide ongoing maintenance
• Develop cutting-edge solutions while sustaining a sophisticated, multi-faceted platform

• Proven track record with 5+ years of professional Java development experience
• Hands-on experience with low-latency and multi-threaded programming techniques
• Excellent problem-solving and analytical skills to tackle complex technical challenges
• Strong communication skills, able to explain complex technical concepts to non-technical stakeholders
• Willingness to learn quickly and adapt to new technologies and market changes
• English proficiency at B2 (Upper-Intermediate) level or higher

• Understanding of financial markets, particularly Rates and Credit bonds/derivatives and trading platforms (e.g., Bloomberg, Tradeweb)
• Familiarity with messaging systems like Kafka and data serialization formats (e.g., AVRO)
• Knowledge of cloud platforms (Azure, AWS or GCP)