Source: CrawlJobs

Java Developer (m/f/d)

Deutsche Telekom IT Solutions Slovakia Košice, Slovakia
Full-time Hybrid work

Publication date: 08/09/2026

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.

Our mission

As a dynamic, flat and international organization, we shape the future of Deutsche Telekom IT in integrated teams consisting of all relevant competencies – it goes without saying that Telekom customers are also part of these teams.

Project Overview

The project involves developing and maintaining microservice applications using the Java, Spring framework and Camel. Microservices are event driven or driven by Camunda BPMN workflow from top point of view. As backend developer, you will be responsible for creating high-quality business-oriented applications, which focus on collecting attributes of mobile network equipment required for certification and commissioning of physical network environment. You will closely cooperate with solution designer and business owners of solution. This role demands a comprehensive understanding of Java, Spring framework, REST practices and requires a proactive approach to problem-solving, a keen eye for detail, and a commitment to staying updated with the latest industry trends and best practices.

Tech Stacks

We are searching for candidates with Java, Spring Boot skills.

Additional preferred knowledge/experience (as an advantage): Frontend (Angular, React), any testing tool/framework, Kubernetes, Docker, Microservices, Git, cloud technologies (AWS, Azure, Google), DB, Grafana

Responsibilities

Design, develop, and maintain complex microservices using one of above mentioned frameworks.; Ensure code quality and maintainability by conducting code reviews and writing unit tests.; Participate in daily stand-ups, sprint planning, and retrospective meetings.; Identify and resolve performance bottlenecks to ensure the application runs efficiently.; Optimize application for maximum speed and scalability.; Provide technical guidance and mentorship; Lead code reviews and ensure adherence to best practices and coding standards.; Create and maintain technical documentation for reference and reporting purposes; Update technical documentation; Share regular progress reports and updates

Requirements

Have experience in Java, Spring boot.; Have understanding of RESTful APIs and integration.; Have experience with databases (SQL, NoSQL); Have experience with version control systems.; Have problem-solving skills and attention to detail.; Have strong communication and teamwork abilities; Nice to have at least a basic understanding of Camel and Camunda.; Have Bachelor's degree or Master's degree in Information technologies; Have minimum 5 years of experience in the development of complex solutions; Have some experience within the field of application programming in object-oriented programming languages, experience with agile software development methodology (e.g., Scrum); Are advanced at Programming, HW/SW Overview, General IT Overview; Have good soft skills like Communication, Analytical thinking, Team Cooperation; Speak English at least on B2 level and German language is advantage
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