Senior .NET Backend Developer (m/w/d) - Cologne

Salary: 60.000 - 80.000 € per year

Requirements:

Experience in software development through a completed diploma or masters degree in computer science or business informatics or corresponding professional experience

Very good knowledge of Microsoft .NET, ideally with .NET Core

Good knowledge of planning and implementing complex interfaces between IT systems

Quick comprehension and a strong understanding of processes

Good knowledge of the database technologies MySQL and MS SQL

Business fluent German and good English skills, spoken and written

Responsibilities:

Work in national projects and design and implement individual software solutions

Drive the expansion of a service-oriented platform for the company

Develop interfaces for the exchange of data based on Microsoft .NET Core in connection with Azure cloud services between internal and customer systems

Accompany solutions over their entire life cycle - from design and implementation through integration to productive operation

Actively contribute experience in architecture and design issues relating to solutions

Technologies:

Azure

Backend

Cloud

Mobile

MySQL

SQL

ASP.NET

More:

We are looking for a Senior .NET Backend Developer to join our team in Rosenheim. You will have the opportunity to shape the future of the housing industry with us. We offer a work-life balance supported by flexible working hours and mobile working, as well as open-ended employment contracts with a crisis-proof employer. Enjoy modern work equipment, funded training opportunities, and protection through our group accident insurance. We provide shopping benefits from specialist dealers, free drinks and fresh fruit at work, and an employer-funded pension. Our flat hierarchy structures and short decision-making paths promote an engaging work environment.

last updated 33 week of 2026