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November 3, 2026
Senior Java Software Engineer
Senior • On-site
Warsaw, Poland
Quick Facts
- Role: Senior Java Software Engineer
- Focus: Cloud-native Java development, REST APIs, microservices, testing, and performance optimization
Description
You will design, develop, and maintain cloud-native Java applications, build REST APIs, and optimize code performance and quality. Working with the team in Agile/Scrum, you will implement technical solutions, resolve issues, and deliver unit and integration tests.
Responsibilities
- Design, develop, and maintain Java applications in a cloud-native architecture
- Create and maintain REST APIs
- Collaborate with the team using Agile/Scrum methodologies
- Write unit and integration tests
- Optimize code performance and ensure high code quality
- Troubleshoot technical problems and implement new functionalities
Requirements
- Minimum 4–5 years of commercial experience in software development
- Knowledge of Java 8+
- Good knowledge of Spring (Spring Boot, Spring Data, Spring Security)
- Knowledge of SQL (e.g., PostgreSQL, Oracle) and NoSQL (e.g., MongoDB) databases
- Experience with asynchronous integrations (e.g., Kafka, Oracle AQ)
- Experience with version control systems (Git)
- Knowledge of Docker and Kubernetes
- Knowledge of unit test principles (JUnit, Mockito)
- Experience building microservices
- Teamwork and communication skills
- English proficiency enabling smooth communication (min. B2)
Benefits
- Hybrid work model (2 days in the office)
- Employment contract (employment agreement)
- Opportunities for growth within internal organizational structures
- Modern office in a convenient location (Młociny Metro Station)
- Access to non-wage benefits on preferential terms
- Employee discount on parts from Inter Cars Group
- Development training in both soft and technical skills
- Subsidy for language lessons
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