Senior Java Developer (Kafka) @ Antal

Senior Java Developer (Kafka)

150-200 PLN/h net + VAT

B2B/UoP
Warsaw | Hybrid model: 1 day per week from the office

Join an international organization delivering a large-scale Big Data integration platform connecting systems across multiple countries within the logistics industry. This is a strategic migration and modernization initiative focused on building scalable, event-driven solutions that support critical business operations.

Your role

As a Senior Java Developer, you will be responsible for designing and developing backend services and integrations for a complex enterprise ecosystem. You will help modernize legacy applications, drive technical decisions, and build robust event-streaming solutions used across international markets.

What we offer

• Long-term cooperation on a strategic international program
• Competitive rate up to 200 PLN/h B2B or employment contract
• Hybrid work model (1 office day per week)
• LuxMed and Multisport
• Opportunity to work with modern technologies including Java, Kafka, Kafka Streams, Kubernetes, and cloud-native architectures
• Real impact on the development of a global integration platform

Technology stack: Java 17+, Spring Boot, Kafka, Kafka Streams, REST API, Microservices, Kubernetes, PostgreSQL/MS SQL/Oracle, Git.

• 10+ years of experience in software development
• Strong expertise in Java 17+ and Spring Boot
• Very strong Kafka knowledge (must-have)
• Hands-on experience with Kafka Streams
• Experience building microservices and event-driven architectures
• Strong understanding of integrations, REST APIs, and messaging systems
• Experience with relational databases (PostgreSQL, MS SQL, Oracle)
• Kubernetes and basic DevOps knowledge
• Fluent English

Nice to have:

• Confluent Kafka experience
• Confluent Kafka Developer certification

Senior Java Developer (Kafka)

150-200 PLN/h net + VAT

B2B/UoP
Warsaw | Hybrid model: 1 day per week from the office

Join an international organization delivering a large-scale Big Data integration platform connecting systems across multiple countries within the logistics industry. This is a strategic migration and modernization initiative focused on building scalable, event-driven solutions that support critical business operations.

Your role

As a Senior Java Developer, you will be responsible for designing and developing backend services and integrations for a complex enterprise ecosystem. You will help modernize legacy applications, drive technical decisions, and build robust event-streaming solutions used across international markets.

What we offer

• Long-term cooperation on a strategic international program
• Competitive rate up to 200 PLN/h B2B or employment contract
• Hybrid work model (1 office day per week)
• LuxMed and Multisport
• Opportunity to work with modern technologies including Java, Kafka, Kafka Streams, Kubernetes, and cloud-native architectures
• Real impact on the development of a global integration platform

Technology stack: Java 17+, Spring Boot, Kafka, Kafka Streams, REST API, Microservices, Kubernetes, PostgreSQL/MS SQL/Oracle, Git.

,(Design, develop, and maintain scalable backend services and integrations, Build event-driven solutions connecting multiple enterprise systems, Work on large-scale Big Data and data-platform initiatives, Modernize legacy applications and migrate them to modern architectures, Define technical solutions and contribute to architectural decisions, Collaborate with product, business, and engineering teams, Mentor less experienced developers and promote best practices, Support production environments and ensure solution reliability) Requirements: Java, Spring Boot, Kafka, Kafka Streams, Microservices, REST API, PostgreSQL, MS SQL, Oracle, DevOps, Kubernetes, Confluent Kafka experience, Confluent Kafka Developer Certification