java developer

The company builds high-performance, cloud-native backend solutions and real-time event-driven platforms for an international team.

• Design, develop, and maintain high-performance backend services using Java;
• Build and enhance event-driven, real-time streaming solutions with Apache Kafka;
• Develop and maintain robust REST APIs supporting critical business processes;
• Contribute to cloud-native applications running on Google Cloud Platform (GCP);
• Write clean, scalable, and maintainable code following TDD principles;
• Collaborate with architects, business analysts, and distributed engineering teams;
• Support platform modernization, scalability improvements, and performance optimization;
• Participate in technical design, code reviews, testing, and production support;
• Investigate and resolve complex technical and production issues;
• Promote engineering best practices and continuous improvement across the team.

• Strong commercial experience with Core Java development;
• Hands-on experience with Apache Kafka and Kafka Streams;
• Experience designing and developing REST APIs;
• Strong knowledge of Test-Driven Development (TDD) and automated testing;
• Experience working with MongoDB;
• Experience developing cloud-native solutions on Google Cloud Platform (GCP);
• Strong understanding of distributed systems, software design patterns, and scalable architectures;
• Ability to solve complex technical problems independently;
• Experience working in Agile, globally distributed teams;
• Strong communication and collaboration skills;
• Fluent English (B2+);
• Nice to have: Scala, Spring Boot, Micronaut, Spring WebFlux, Terraform, Docker, GKE, Cloud Run, CI/CD tools such as Jenkins or TeamCity, experience with real-time high-throughput systems, background in capital markets, trading systems, risk management, or market data platforms.

• The position is based in Kraków, Poland;
• Start is ASAP.