Senior Application Developer with Angular (m/f/d)

Our brand Deutsche Telekom IT Solutions Slovakia entered the life of Košice region in 2006 under the name of T-Systems Slovakia and ever since has been inextricably linked with the region when became one of the founding members of Košice IT Valley. We have managed to grow from scratch to the second largest employer in the eastern part of the country with more than 3900 employees. Our goal is to proactively find new ways to improve and continuously transform into the type of company providing innovative information and communication technology services.

As T-NAP, we provide a central platform for end-to-end network automation within Deutsche Telekom, enabling the transition to software-defined, cloud-based and disaggregated network architectures. Originating from the MOVE-ON program, we bring together expertise across DT Technik, VTI and Telekom IT, driving true IT/NT convergence. Our platform is built on ONAP and leverages modern technologies such as microservices, cloudification and open APIs. We enable scalable orchestration of network services, supporting innovations like NFV and O-RAN while reducing dependency on traditional vendors. Working in an agile setup as an Agile Release Train, our teams deliver impactful solutions shaping the future of telecom networks.

Purpose

As a Senior Full Stack Developer within the T-NAP Digital Hub, you design and develop scalable web applications for a cloud-native, containerized network automation platform. You take ownership across the full development lifecycle, contributing to high-quality, maintainable solutions built on modern technologies and open-source foundations such as ONAP.

Working in an agile, multi-team environment (Scrum, SAFe), you collaborate closely with engineers across software, DevOps, and network domains to deliver efficient, automated solutions. You actively contribute to technical decisions, ensuring performance, scalability, and seamless integration within CI/CD-driven workflows.

WHAT WILL YOU DO?

• Design, develop, and maintain scalable web applications for a cloud-native, containerized network automation platform (T-NAP)
• Translate business and technical requirements into robust, high-quality solutions across the full software development lifecycle
• Collaborate in an agile, multi-team environment (Scrum, SAFe) with software, DevOps, and network engineers
• Contribute to CI/CD pipelines and automate application and infrastructure deployments
• Ensure performance, reliability, and scalability of the platform through testing, monitoring, and optimization
• Support troubleshooting, fault analysis, and continuous improvement of system components
• Participate in technical discussions, knowledge sharing, and mentoring within the team

YOU WILL SUCCEED IF YOU:

• Have strong hands-on experience in backend development with Java and Spring Boot (including reactive/WebFlux) and solid frontend skills in Angular (TypeScript/JavaScript)
• Possess deep understanding of RESTful web services, JSON, and API design standards such as OpenAPI/Swagger
• Are experienced with modern DevOps and cloud-native tools, including Docker, Kubernetes, and web servers like NGINX, Keycloak, or Traefik
• Have advanced experience with database development (PostgreSQL..)
• Thrive in agile environments (Scrum/SAFe) and are comfortable working in distributed, multi-team setups
• Quickly adapt to new technologies and problem domains, demonstrating strong analytical thinking and a solution-oriented mindset
• Act as a supportive and collaborative team player, proactively sharing knowledge and mentoring less experienced colleagues
• Bring curiosity for telecom and network automation domains; experience with ONAP is a plus

WHY SHOULD YOU CHOOSE US?

We believe in balance between work and personal life. An attractive and extensive work-life balance portfolio guarantees lasting motivation for employees and thus a better quality of life, promotes physical and mental well-being and contributes to a positive work environment. All this with the aim of providing more freedom in reconciling work, career growth, private life and individual lifestyle. Therefore we offer to our employees over 25 different benefits to improve their personal and professional life in these areas:

• Financial benefits
• Benefits with focus on learning and development
• Benefits with focus on health and sport
• Benefits with focus on family and work – life balance
• Other benefits

For more information about our benefits click to Benefits

Salary

Final salary is negotiable.

We are offering base salary depending on seniority level and previous experience of candidate. In addition to base salary we provide variable part and other financial benefits. Base salary will not be lower than 3100€ /brutto.

Additional information

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