For our client an IT company specializing in new product development and R&D, focused on solving complex challenges in the tech industry we are looking for a Senior Java Developer based in Poland or Lithuania.

Responsibilities

• Feature development — design, implement, and integrate new functionality using Java 17–21 and the Spring ecosystem; participate in architectural discussions and code reviews;
• Application support & maintenance — provide ongoing support, troubleshoot production issues, and fix bugs to ensure high availability and stable performance;
• Cloud deployment — manage deployment, configuration, and hosting of applications on AWS infrastructure; contribute to infrastructure improvements;
• Data persistence — handle database interactions, schema design, and query optimization using MySQL and Hibernate ORM;
• Build management — use Gradle and Maven for dependency management and build auto...