.NET / C# Developer (REF5243Z)

DeutscheTelekomITSolutions

Budapest,Debrecen,Pécs,Szeged, , Hungary Hybrid permanent

Posted: March 16, 2026

Required Skills

Job Description

As Hungary’s most attractive employer in 2025 (according to Randstad’s representative survey), Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group. The company provides a wide portfolio of IT and telecommunications services with more than 5300 employees. We have hundreds of large customers, corporations in Germany and in other European countries. DT-ITS recieved the Best in Educational Cooperation award from HIPA in 2019, acknowledged as the the Most Ethical Multinational Company in 2019. The company continuously develops its four sites in Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team.

About the Project: You will be joining the RCS3 project, operating within the IT Service Management (ITSM) and Application Management (AM) domain for the telecommunications and network infrastructure sector.

RCS3 is a critical, core process application used by our specialized department to configure, manage, and deliver network components such as routers and switches. The application runs on the Telekom Private Cloud (TPC) / Future Cloud Infrastructure. Our technology stack is heavily built on the .NET ecosystem (C#, Blazor) and integrates Keycloak, API Management, and Expect Scripting.

Role Overview: We are looking for a skilled .NET / C# Developer to join our team. In this role, you will be responsible for developing, maintaining, and scaling the RCS3 application. Since this is a critical tool for network component delivery, you will play a key role in building secure, high-performing, and reliable features that directly impact our core operational processes.

Key Responsibilities:

• Design, develop, and maintain backend services and APIs using C# and ASP.NET Core.
• Build interactive and responsive user interfaces utilizing Blazor and the MudBlazor component library.
• Implement data access layers and manage database interactions using Entity Framework.
• Write clean, scalable, and maintainable code, actively participating in code reviews and architectural discussions.
• Integrate the application with third-party systems, including Keycloak, API Management tools, and Expect Scripting.
• Deploy and support the application running on the Telekom Private Cloud (TPC).

Required Skills & Qualifications:

• Strong C# / .NET skills: Solid professional experience in software development using C# (ideally with knowledge of .NET 8 or newer).
• Web Frameworks: Proven experience in building web applications and RESTful APIs using ASP.NET Core.
• Database Knowledge: Solid understanding of database fundamentals, HTTP protocols, and hands-on experience with relational databases, specifically MariaDB.
• ORM Frameworks: Practical knowledge and experience with Entity Framework.

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

Why Apply Through MisuJob?

AI-Powered Job Matching: MisuJob uses advanced artificial intelligence to analyze your skills, experience, and career goals. Our matching algorithm compares your profile against thousands of job requirements to find positions where you have the highest chance of success. This saves you hours of manual job searching and ensures you only see relevant opportunities.

One-Click Applications: Once you create your profile, applying to jobs is effortless. Your resume and cover letter are automatically tailored to highlight the most relevant experience for each position. You can apply to multiple jobs in minutes, not hours.

Career Intelligence: Beyond job matching, MisuJob provides valuable career insights. See how your skills compare to market demands, identify skill gaps to address, and understand salary benchmarks for your experience level. Make data-driven decisions about your career path.

Frequently Asked Questions

How do I apply for this position?

Click the "Register to Apply" button above to create a free MisuJob account. Once registered, you can apply with one click and track your application status in your dashboard.

Is MisuJob free for job seekers?

Yes, MisuJob is completely free for job seekers. Create your profile, get matched with jobs, and apply without any cost. We help you find your dream job without any hidden fees.

How does AI matching work?

Our AI analyzes your resume, skills, and experience to understand your professional profile. It then compares this against job requirements using natural language processing to calculate a match percentage. Higher matches mean better fit for the role.

Can I apply to jobs in other countries?

Absolutely. MisuJob features jobs from companies worldwide, including remote positions. Filter by location or look for remote opportunities to find jobs that match your preferences.

Ready to Apply?

Join thousands of job seekers using MisuJob's AI to find and apply to their dream jobs automatically.