DeutscheTelekomITSolutionsSlovakia

Senior Software Developer (Java Application Developer)

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At a Glance

Location
Moldavská cesta, 040 11 Košice, Slovakia
Employment
Full-time
Experience
5+ years
Department
Technical positions
Posted
2026-03-26T09:40:46.837Z

Key Requirements

Required Skills

AgileGitJavaMicroservices

Domain Knowledge

  • Education

Requirements

At least 5 years of experience in software development

Strong experience in Java backend development (advanced level)

Solid understanding of software architecture and system design

Good overview of IT systems, infrastructure, and application landscape

Experience with modern development methodologies (Agile preferred)

version control systems (e.g., Git)

Compensation & Benefits

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

Responsibilities

Develops new and maintains existing applications using modern technologies (primarily Java) based on requirements of internal or external customers.

These applications support automation and transformation of business-critical processes within the Telekom domain.

Works independently or as part of a project team on designing, developing, and building mid-size to complex, scalable applications in a cloud-native, microservices-based environment.

As part of the role, actively contributes to the migration of business logic from a legacy billing system (one of the top 100 most critical Telekom applications) into a modern streaming platform built on Quarkus and Kafka, designed to process millions of events daily.

As part of a team of experienced senior developers, you will contribute to our initiative focused on migrating business logic from a legacy billing system, currently one of the top 100 most critical Telekom applications into a modern Quarkus-based streaming platform.

The new solution is built on a microservice architecture, with services communicating via Kafka, and is designed to process millions of events daily.

About the Company

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.