Senior Java Developer with Apache Kafka (f/m/x)
We are looking for an experienced Senior Java Developer to join a team building a modern enterprise data integration and processing platform that supports key logistics and transportation processes on a global scale. This role focuses on developing scalable backend services, microservices, and event-driven integrations within a complex enterprise environment.
You will contribute to the design and implementation of solutions that enable efficient data processing and communication across business systems. An important part of the role involves modernizing legacy applications and delivering solutions aligned with Domain-Driven Design principles.
We are looking for a self-driven professional who can actively participate in architecture discussions and make sound technical decisions. Strong hands-on production experience with Apache Kafka is essential for success in this role.
Your tasks
Designing, developing, and maintaining scalable backend services and microservices using Java and Spring Boot
Implementing event-driven architectures and data-processing solutions based on Apache Kafka
Building enterprise integrations between internal and external systems using APIs, messaging platforms, and asynchronous communication mechanisms
Participating in technical design and solution architecture discussions, providing expertise in distributed systems and integration patterns
Supporting the modernization and transformation of legacy applications into scalable, maintainable, and cloud-ready solutions
Monitoring, troubleshooting, and optimizing application performance, reliability, and scalability across distributed environments
Collaborating closely with developers, architects, and business stakeholders to deliver strategic data integration and digital transformation initiatives
Requirements
Minimum 10 years of commercial software development experience, including strong senior-level expertise in Java backend development
Strong hands-on production experience with Apache Kafka
Proven experience designing and building microservices, scalable backend services, and event-driven architectures
Practical experience working with distributed systems, enterprise integrations, and data processing solutions
Ability to contribute independently to technical design and solution architecture discussions
Very good English communication skills, enabling effective collaboration in an international environment
Residence in Poland
Valid Confluent Certified Developer for Apache Kafka (CCDAK) certification
Nice-to-have requirements
Production experience with Kafka Streams and Kafka Connect
Experience with cloud-native and containerized environments, including Azure, Kubernetes, OpenShift, Docker, or Podman