T-Mobile
Senior .NET Developer (m/f/d) with Angular Skills
Skills
4 days ago
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Important information
Location:
Košice, Czechia
Work mode:
Onsite
Published on:
16 October 2026
What they need
Job ID: 744000128975599
Senior .NET Developer (m/f/d) with Angular Skills
Kosice
Professional
Regular
Deutsche Telekom IT and Telecommunications Slovakia
Your Task
The main objective of this role is to develop, maintain, assist, and consistently improve Deutsche Telekom internal applications and services. As a Fullstack Developer with senior backend .NET skills and frontend Angular skills, you will work in a SCRUM team on developing and building complex application solutions.
Responsibilities
- Develop new and maintain existing source code of applications, application components and functionalities in Java / .NET (backend) and Angular (frontend) frameworks
- Support tools and systems for local employees in their day-to-day work
- Debug application code to find and fix issues and recover the original functionality
- Ensure stability, usability, and efficiency of internal IT services
- Serve as professional mentor for junior and medior developers
- Listen to user requests and consult with internal/external customers and project managers
- Analyze customer's requirements and propose overall application/framework design of midsize application architecture (including interfaces, relation database structure)
- Provide complex business analysis to build application functionality
- Provide project estimates, timeline like total number of development hours, total number of testing hours and bug fixing and report it to customer for budget planning in advance
- Implement customer's requirements based on specification in selected object-oriented programming language into functional and user-friendly application
- Provide testing of programmed functionality before deployment to avoid bugs and ensure quality of code
- Implement security concept according to PSA policy in developed application to ensure accordance with DTAG standards
- Collaborate with internal and external stakeholders and customers to analyze and fulfill their needs and align product roadmap to strategic goals
- Take part in internal evaluation processes
- Take product responsibility from technology point of view
- Negotiate with PO/PM about technology stacks used in project
- Engage in problem solving and decision making
Your Profile
We are seeking a Senior Fullstack Developer with strong backend expertise in .NET, frontend skills in Angular, and extensive experience in developing complex enterprise applications using agile methodologies.
Must Have Skills
- Bachelor's degree or Master's degree in Information Technologies
- Minimum 5 years of experience in the development of complex solutions
- Experience in application programming with object-oriented programming languages
- Experience with agile software development methodology (e.g., Scrum)
- Advanced programming skills
- Advanced knowledge of HW/SW Overview
- Advanced knowledge of General IT Overview
- Strong communication skills
- Strong analytical thinking skills
- Strong team cooperation skills
- English language proficiency at B2 level or higher
- Senior level backend development skills in .NET
- Frontend development skills in Angular
- Experience with Java backend development
Nice to Have Skills
- Experience with testing tools or frameworks
- Experience with Kubernetes
- Experience with Docker
- Experience with Microservices architecture
- Experience with Git
- Experience with cloud technologies (AWS, Azure, Google)
- Database experience
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: 3100 - 3700 EUR
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 3100 EUR /brutto.
Company Policies
- Remote working possibility is only available within Slovakia due to European taxation regulation
Job Benefits
Professional Development
- Over 25 different benefits with focus on learning and development
- Professional mentoring opportunities
- Environment that encourages learning and professional growth
Work-Life Balance
- Attractive and extensive work-life balance portfolio
- Remote working possibility (within Slovakia)
- Flexible working arrangements
Financial
- Base salary: 3100 - 3700 EUR (brutto)
- Variable compensation component
- Additional financial benefits
Health & Wellness
Benefits with focus on health and sport
Family Support
Benefits with focus on family and work-life balance
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