Java Developer (REF5333V)

Ranked as Hungary’s most attractive employer in 2025 (according to Randstad’s representative survey), Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group. The company provides a wide portfolio of IT and telecommunications services with more than 5300 employees. We have hundreds of large customers, corporations in Germany and in other European countries.

DT-ITS received the Best in Educational Cooperation award from HIPA in 2019 and was acknowledged as the Most Ethical Multinational Company in 2019. The company continuously develops its four sites in Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team.

We’re looking for a talented Backend Developer to join our growing team in Budapest, Hungary. In this role, you’ll have the opportunity to design, develop, and maintain applications that drive our organization’s core business processes.

You will primarily focus on back‑end development using Java and Spring technologies (Spring, Spring Boot), working with PostgreSQL databases in a microservices architecture.

We are seeking someone who is passionate about writing clean, efficient, and maintainable code, enjoys collaborating with cross‑functional teams, and is enthusiastic about modern technologies – including AI‑driven solutions – to deliver meaningful business impact.

Our close‑knit team of 7+ engaged colleagues in Hungary works on a robust, business‑critical system that creates and manages offers and orders for BNG (Broadband Network Gateway) transmission paths. The system covers the full lifecycle from business case validation through order processing to production handover.

Due to ongoing development and growing demand, we are expanding the team with 4 additional developers.

The application enables the configuration and ordering of connection products from our portfolio. The team plays a key role in modernizing the architecture, while continuously supporting and extending existing functionality.

While we are building new Spring Boot‑based microservices, a significant part of the work also involves developing, improving, and modernizing an existing system.

To succeed in this role, it is essential that developers can quickly understand existing codebases, identify improvement opportunities, and confidently enhance them while ensuring system stability.

What you will do:

• Design, develop, and maintain backend services using Java and Spring Boot
• Work with PostgreSQL in a microservices environment
• Develop new functionalities and improve existing application components
• Understand, refactor, and optimize existing code
• Actively contribute to architecture modernization
• Collaborate closely with business stakeholders, architects, and fellow developers
• Ensure code quality through reviews, testing, and best practices

You can be successful with us if you have:

• Strong experience in Java and Spring / Spring Boot
• Experience with backend development in enterprise systems
• Good understanding of relational databases, preferably PostgreSQL
• Experience working with or within microservices architectures
• Knowledge of version control (Git) and agile development practices
• Ability and motivation to quickly understand and improve existing code
• Proactive, team‑oriented mindset with attention to detail
• English knowledge 

 

Nice to have:

• Experience with system modernization or refactoring legacy code
• Exposure to cloud‑native or AI‑supported solutions
• Experience in telecom or complex order management systems
• German knowledge

* Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation.