Senior Fullstack Developer Java and JavaScript - (Senior Application Developer) (m/f/d)

Deutsche Telekom IT Solutions Slovakia

6h•$3,100•Remote

About The Position

Deutsche Telekom IT Solutions Slovakia is seeking a Senior Fullstack Developer with expertise in Java and JavaScript. The role involves developing and maintaining source code for applications that automate business processes. The Senior Application Developer (Agile) will be responsible for the continuous development and enhancement of the internal Telekom application VIS-Tool (Vertragsbestands-Informations-System). This includes modular expansion and automation of order request processes within the CVS/CPS environment, replacing manual Excel-based workflows with a modern, web-server-based architecture for faster, more efficient, and error-free contract and product processing. The VIS-Tool is a business-critical internal application supporting multiple Telekom business units in managing framework contracts and product orders. The development team operates in an agile, cross-functional setup, collaborating closely with business stakeholders, system interfaces, and internal microservices to deliver reliable and scalable process automation solutions.

Requirements

Strong software engineering experience in enterprise application environments.
Hands-on development experience with Java, JavaScript, and SQL / Oracle DB – Advanced.
Experience working in agile development environments.
Solid understanding of business process automation and software modularization.
Ability to analyze, design, and implement solutions within existing architectures.
Comfortable implementing small to medium functional changes across multiple modules.
Structured, solution-oriented, and analytical working style.
Clear communication with both technical and business stakeholders.
Enjoy working in cross-functional teams and collaborative environments.

Nice To Haves

Experience with telecom systems or contract-based process environments.
Exposure to project management methods or coordination roles.
Experience with workflow-driven applications integrating multiple interfaces.
Business-facing consulting or advisory experience.

Responsibilities

Continuously develop and enhance the VIS-Tool application in an agile environment.
Design and implement modular extensions to automate order request processes (Abrufaufträge) in the CVS/CPS landscape.
Replace manual, Excel-based workflows with scalable, web-based solutions.
Implement functional changes across multiple application modules.
Develop backend and frontend components using Java, JavaScript, and SQL with Oracle databases.
Design technical solutions at module and component level within existing system architectures.
Integrate VIS-Tool with internal microservices, contract systems, and master data sources.
Provide technical consulting and advisory support to business stakeholders.
Collaborate closely with developers, analysts, and business teams in cross-functional agile setups.
Contribute to technical documentation and overall system transparency.
Support the stability, maintainability, and continuous improvement of the application.