Deutsche Telekom IT Solutions Slovakia is hiring a Senior Backend Developer (Senior Application Developer) with German Language (m/f/d)

Develops new and maintain existing source code of applications in programming language like Java, ASP.Net or C# based on requirements of internal or external customers. These applications support usually automation of business processes. Project description Senior Application Developer (Agile) for the internal Telekom application IPLS-ROT (International Production Line Service – Roll Out Tool). The role focuses on the continuous development and enhancement of an existing, highly integrated OSS system used for technical provisioning of VPN customer connections in an international telecom environment. IPLS-ROT translates commercial orders from BSS systems into technical components and workflows, orchestrates provisioning activities across multiple downstream systems, manages resources and inventories, and processes order feedback. The application operates within a complex system landscape with numerous interfaces and dependencies. WHAT WILL YOU DO? - Continuous development and enhancement of the IPLS-ROT application - Implementation of changes across multiple small but diverse functional topics - Backend development within an existing system architecture - Solution design at component and feature level - Technical consulting and advisory support for business stakeholders - Collaboration with cross-functional teams in an agile environment - Contribution to documentation and system understanding Minimum Requirements - Strong software engineering experience in complex enterprise systems - Hands-on development experience with: - Java - Perl - PHP - SQL - Apache Tomcat - Experience working in agile development environments - Solid understanding of OSS/BSS-integrated system landscapes - Ability to analyze, design, and implement solutions within existing architectures - German language skills (required) Nice to Have - Experience in telecom or network-related systems (OSS, provisioning, workflows) - Exposure to project management methods - Business-facing experience or consulting mindset - Familiarity with systems involving: - High number of interfaces - Workflow-driven processes - Inventory and resource management