Backend Software Developer (Java / Spring Boot)

• Develop, maintain, and enhance modern backend services based on Java and Spring Boot.
• Design and implement RESTful APIs and ensure secure, scalable integrations, leveraging Apache Kafka for event-driven architectures and real-time data streaming.
• Work with relational databases (e.g., PostgreSQL, TimescaleDB, MS SQL), including writing efficient queries and basic performance tuning.
• Collaborate with other backend developers and QA engineers to deliver high-quality solutions.
• Ensure code quality through testing, CI/CD integration, and proper documentation.
• Support development for the e-connect portal, focusing on backend microservices and data integration.

• Degree in Computer Science, Software Engineering, or equivalent.
• 2–4 years of professional experience in backend development with Java and Spring Boot.
• Solid understanding of relational databases and SQL.
• Familiarity with CI/CD concepts and tools (Azure Pipelines experience is a plus).
• Proficiency with version control (Git) and build tools (Maven/Gradle). • Strong analytical skills, structured working style, and team-oriented mindset.
• Good command of English; German is an advantage.

• Basic knowledge of frontend technologies (Angular, TypeScript, HTML, CSS).
• Knowledge of monitoring and logging tools (e.g., Splunk).
• Experience with cloud platforms, particularly Microsoft Azure.
• Familiarity with containerization and orchestration (Docker, Kubernetes).
• Experience with messaging systems such as Kafka or MQTT.
• Experienced in using Atlassian tools such as Confluence and Jira for documentation, collaboration, and project management.
• Familiarity with MES (Manufacturing Execution Systems) environments and handling MESrelated data.

• Attractive basic salary depending on experience, plus a 13th and 14th month salary (the 14th month salary is linked to the achievement of individual targets set for the year).
• Employment based on an employment contract (contract directly with our client in Poland).
• Work tools, such as: telephone, laptop with necessary software. 
• Work in an international, stable organisation with low staff turnover.
• Benefits package: Private medical care, Multisport card, Group insurance, access to a language platform (English and German).
• An organisational culture that emphasises work ethic and cooperation between employees.

You will join a small, agile hybrid team of 4–6 professionals based between European and Kraków. The team is focused on developing scalable microservices and cloud-native applications using Java, Spring Boot, Kubernetes, and Azure cloud technologies. Collaboration, timely knowledge sharing, and cross-site communication are key to the team’s success. Your role will be critical in shaping backend architecture and helping to integrate backend services with frontend Angular components. A major focus will be on the e-connect portal, which serves as a central platform for digital customer engagement. The team culture emphasizes innovation, continuous learning, and quality-driven development within a supportive environment.