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Senior Software Solution Designer (m/f/d)

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Senior Software Solution Designer (m/f/d)

T-Mobile

Senior Software Solution Designer (m/f/d)

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MicroservicesPostmanJiraConfluence

5 days ago

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Important information


Location:

Košice, Czechia

Work mode:

Onsite

Published on:

16 October 2026

What they need


Job ID: 744000154376509

Senior Software Solution Designer (m/f/d)

Košice

Professional

Regular

Deutsche Telekom IT and Telecommunications Slovakia

Your Task

We are looking for an experienced Software Solution Designer to join our international team and contribute to the development and continuous improvement of a strategically important system within the Deutsche Telekom Group. The project supports the planning, construction, inventory, configuration, operation, and optimization of mobile radio networks. Its applications and services provide a consistent data foundation for internal systems and support collaboration with external partners across the mobile network lifecycle.

Responsibilities

  • Translate business needs and customer requirements into effective, scalable IT solutions
  • Analyze and refine requirements, user stories, business processes, and functional specifications
  • Design end-to-end solutions for mobile radio network infrastructure across applications, services, APIs, and system interfaces
  • Decompose complex requirements into clear, development-ready solution components
  • Create and maintain solution designs, process models, interface specifications, and system documentation
  • Identify involved systems, interface partners, dependencies, and integration impacts
  • Define and assess relevant non-functional requirements, including performance, security, availability, and maintainability
  • Design and validate REST API interactions, data flows, and mappings
  • Analyze existing mobile radio network systems and identify opportunities for improvement and simplification
  • Evaluate solution alternatives and communicate recommendations to business and technical stakeholders
  • Collaborate closely with Product Owners, business analysts, developers, architects, DevOps teams, and system engineers
  • Support implementation, testing, rollout, and continuous improvement of the solution
  • Contribute to a clear, consistent, and maintainable system landscape
  • Document and communicate solution principles, guidelines, and design decisions

Your Profile

We are seeking an experienced Software Solution Designer with extensive experience in solution design and software architecture within complex IT environments, strong understanding of microservice architectures and API-driven integration, and excellent communication and analytical skills to contribute to mobile radio network infrastructure systems.

Must Have Skills

  • At least five years of experience in solution design, software architecture, business analysis, or a related role within complex IT environments
  • Experience designing business applications and end-to-end IT solutions across multiple systems
  • Understanding of microservice-based architectures, distributed systems, and API-driven integration
  • Ability to analyze system dependencies, integration patterns, business processes, and technical constraints
  • Ability to create clear models and diagrams using UML and BPMN, including process, activity, sequence, and use-case diagrams
  • Experience defining functional and non-functional requirements and turning them into implementable solutions
  • Familiarity with REST APIs and tools such as Swagger or Postman
  • Experience working with Agile methods, such as Scrum, in cross-functional teams
  • Confident communicating in written and spoken English at least at B2 level
  • Solution design and architecture skills
  • Business and system analysis skills
  • End-to-end IT solution design experience
  • Microservice architecture knowledge
  • REST APIs and system integration experience
  • UML and BPMN proficiency
  • Agile methods and Scrum experience
  • Experience with Jira, Confluence, and Enterprise Architect
  • IT service and business process understanding
  • Strong communication skills
  • Strong presentation skills
  • Strong organizational skills
  • Analytical and structured thinking
  • Result orientation
  • Customer and business orientation
  • Problem-solving and decision-making skills
  • Collaboration and knowledge sharing abilities
  • Conflict management and diplomacy skills
  • Ability to work collaboratively with others to achieve goals
  • Persistent, creative problem-solver
  • Ability to remain cool and effective in a crisis
  • Understanding of business needs and ability to create tools to manage them
  • Extensive knowledge of business environment and IT, business process, organization, and implications of changes
  • Experience in business analysis, business process design and end-to-end IT solution design
  • Experience in introducing comprehensive IT solutions in a complex IT application landscape, analyzing and preparing a new solution, testing, and participation in roll outs
  • Experience in creating topic-specific IT guidelines and blueprints and communicating/consulting this content with system users
  • Project management skills

Nice to Have Skills

  • Knowledge of mobile telecommunications or mobile radio network infrastructure
  • Experience contributing to IT guidelines, solution blueprints, or architecture documentation
  • Experience supporting testing, implementation, and rollout activities

About Us

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.

Benefits

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

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 €2,500 gross.

Additional Details

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

Job Benefits

Family Support

Benefits with focus on family and work-life balance

Financial

  • Base salary will not be lower than 2500 € /brutto
  • Variable part in addition to base salary
  • Other financial benefits

Work-Life Balance

  • Remote working possibility (within Slovakia)
  • Attractive and extensive work-life balance portfolio

Professional Development

Over 25 different benefits with focus on learning and development

Lifestyle & Wellness

  • Benefits with focus on health and sport
  • Benefits promoting physical and mental well-being

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