Mid/Senior Java Developer

We are seeking experienced Mid and Senior Java Developers to join a project for a client in the telecommunications industry. The role involves developing backend services that act as a critical integration layer across multiple domain services and participating in a strategic migration towards a Node.js and TypeScript ecosystem.

• Mid-Level candidates with a minimum of 3 years’ experience in Java
• Senior candidates with at least 5 years’ experience in Java
• Proficient with Java 21 features such as virtual threads, records, and pattern matching
• Experience with Spring Boot
• Knowledge of MongoDB
• Strongly preferred: Node.js/TypeScript experience
• Proficiency in English at B2 level or higher

• Implementation of new functionalities in an existing system
• Working with APIs (REST, OpenAPI)
• Handling events and cross-system integrations
• Writing tests (unit + integration)
• Applying ready-made patterns (without architecture design)
• Participating in code reviews

Senior additional responsibilities:

• Leading technical discussions and architectural decisions within the squad
• Leading migration initiatives for specific domains
• Mentoring mid-level developers
• Conducting knowledge-sharing sessions on complex patterns