Senior Java Developer - N4F - (REF5331H)

We’re looking for a strong Senior Java Engineer to help build and modernize Deutsche Telekom’s network management and provisioning ecosystem.

This is not a typical enterprise CRUD environment!

Our systems support large-scale telco infrastructure and services including:

• 5G rollout
• FTTH / FTTC broadband provisioning
• IP Transit services
• distributed network orchestration
• machine-to-machine communication workflows

You’ll work on backend platforms where scalability, resilience, distributed communication, and reliability are real engineering challenges — not just buzzwords.

The role focuses on designing and developing modern Java microservices for provisioning, orchestration, and complex system integrations in a mission-critical telco environment.

What you’ll work on:

• Designing and developing Java-based backend microservices
• Building scalable distributed systems
• REST and event-driven communication
• Network provisioning and orchestration workflows
• PostgreSQL modeling and optimization
• CI/CD pipelines and containerized environments
• Kubernetes / Docker infrastructure
• Integration of complex business and network management systems
• Technical mentoring and architecture reviews
• Helping modernize legacy telco platforms into modern distributed architectures

Tech Stack:

• Java
• Microservices
• REST APIs
• PostgreSQL
• Docker
• Kubernetes
• CI/CD
• Event-driven architecture

•  Strong experience in Java development and microservice architectures
• Expertise in RESTful API design, and event-driven communication (Stargate, Horizon)
• Solid experience with PostgreSQL (data modeling, queries, optimization)
• Ability to design and review software architecture for distributed systems
• Familiarity with CI/CD pipelines and containerization (Docker, Kubernetes)
• Strong analytical and conceptual skills for system design
• Leadership qualities and experience in guiding development teams
• Willingness and capability to integrate AI solutions for process optimization and workflow improvement

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