Senior Java Developer

Quick Facts

• Role: Senior Java Developer
• Focus: Microservices, APIs/integrations, automated testing, code quality, and AI-assisted development
• Collaboration: Hybrid (1 day/week in Warsaw office)

Description

You will build and evolve microservices-based systems, including designing, implementing, and maintaining APIs and integrations between systems. The role also includes participation in functional and non-functional solution design, optimizing and improving business processes through scalable IT solutions, and developing automated tests. You will actively use AI and agentic AI throughout requirements analysis, implementation, testing, and maintenance, with involvement in code reviews focused on quality and security.

Responsibilities

• Develop and maintain microservices-based systems
• Design, implement, and maintain APIs and system integrations
• Contribute to functional and non-functional solution design
• Optimize and improve business processes with scalable solutions
• Create and evolve automated tests
• Ensure high code quality and apply good engineering practices
• Use AI/agentic AI in requirements analysis, implementation, testing, and maintenance
• Participate in code reviews and activities related to code quality and security

Requirements

• Minimum 5 years of commercial Java programming experience
• Minimum 3 years of experience with Apache Kafka
• Minimum 5 years of experience with Spring Framework, Spring Boot, Spring Cloud, and Hibernate
• Very good knowledge of SQL
• Experience creating unit and integration tests (JUnit, TestNG, Spock, Testcontainers, WireMock)
• Knowledge of OOP and Functional Programming (FP) paradigms
• Experience containerizing applications
• Knowledge of process engines and BPMN notation
• Knowledge of patterns/mechanisms for service resilience in distributed systems
• Knowledge of Angular and experience creating frontend applications
• Ability to effectively use AI tools during software development

Benefits

• Opportunity to work across diverse Software, Embedded, Data, and Cloud Services projects
• Access to medical care, sports card, and a cafeteria platform according to collaboration rules