Mid/Senior Java Developer

We are seeking experienced Mid and Senior Java Developers who will join the project for our client in the telecommunications industry. The successful candidate will bring advanced expertise in Java 21, contributing to the development of backend services that serve as a critical integration layer across multiple domain services. Additionally, the position offers the opportunity to engage in a strategic migration towards a Node.js and TypeScript ecosystem.

Responsibilities

• 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

Qualifications

• Java Experience:

  • 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 preffered: Node.js/TypeScript experience

• Proficiency in English at B2 level or higher

Benefits

• Hybrid work (1-2 days in Warsaw office)

• Unique TEAL culture, relationship- and respect-driven community, non-corporate atmosphere

• Agile approach and no bureaucracy

• Outstanding integration trips to various places in Europe for all employees.

• Activities to support your well-being and health

• Luxmed Gold Extended medical care and Multisport Plus benefit