Senior Java Developer for Low-Latency Trading Platforms

Enfint; Kraków; On-site; PLN 140,000 - 210,000; Full time

Job summary

Enfint is hiring a senior Java developer in Kraków, Poland, to build high-performance solutions for fixed income rates and credit trading desks within a global markets technology organization.

You'll design scalable Java applications, optimize latency and concurrency, and work with global IT teams to enable seamless integration. Strong communication and English (B2) are essential to collaborate with stakeholders and adapt to evolving market needs.

Qualifications

• 5+ years of professional Java development experience.
• Hands-on experience with low-latency and multi-threaded programming.
• Strong problem-solving and analytical skills.
• Excellent communication to explain technical concepts to non-technical stakeholders.
• Willingness to learn quickly and adapt to market changes.
• English proficiency at B2 level or higher.

Responsibilities

• Design and deliver scalable Java applications addressing complex business challenges.
• Improve performance and maintainability by optimizing existing components.
• Facilitate UAT and demonstrations with key stakeholders.
• Convert business requirements into clear technical specifications.
• Coordinate with global IT teams for seamless integration.
• Support production releases and ongoing maintenance.
• Develop cutting-edge solutions on a sophisticated platform.

Skills

Java

Low-latency

Multithreading

Analytical skills

English B2

Tools

Kafka

AVRO

Cloud platforms

Job description

Enfint is hiring a senior Java developer in Kraków, Poland, to build high-performance solutions for fixed income rates and credit trading desks within a global markets technology organization.

You'll design scalable Java applications, optimize latency and concurrency, and work with global IT teams to enable seamless integration. Strong communication and English (B2) are essential to collaborate with stakeholders and adapt to evolving market needs.