Windows .Net Software Engineer


Join our dynamic team at CoreWillSoft GmbH as a Software Engineer specializing in Windows .Net applications! We focus on innovative security solutions for critical facilities and infrastructures, building automation, and IoT physical access control software. 

We are looking for a skilled Software Engineer to help us maintain and develop Windows-based desktop applications. Our Agile team, based in various locations with headquarters in Bonn, Germany, handles the full software development lifecycle; from initiation to implementation and operation of our specialized software solutions. 

This is an excellent chance to work on important projects involving high-security hardware and technology in a creative, international setting. You will collaborate with a talented team and make a significant impact on our customers’ businesses.



  • Develop, maintain, and enhance Windows-based desktop applications using .Net 2.6.1 – 6.0. 
  • Implement CI/CD pipelines for development and QA processes. 
  • Act as a liaison between the customer and the development team, collecting and synthesizing feedback into actionable tasks. 
  • Ensure on-time delivery of high-quality products. 
  • Collaborate with cross-functional teams, including engineering, sales, marketing, and support, to deliver successful projects. 
  • Identify potential risks and issues within the project and propose mitigation strategies. 


We offer: 

  • Great customer impact: the solutions you deliver will be used by thousands of large and small businesses. 
  • Ability to shape the product, working, and delivery process. 
  • Great team spirit and close collaboration. 
  • Agile and innovative environment. 
  • Cutting-edge technology. 
  • Working on the latest hardware. 


Your skills: 

  • Proven experience in Windows .Net Desktop application development. 
  • Familiarity with System.Reactive and its extensions for reactive programming. 
  • Experience with System.Security.Cryptography for cryptographic operations. 
  • Experience in implementing CI/CD pipelines. 
  • Excellent communication and collaboration skills. 
  • Advanced Business English language knowledge. 
  • Good analytical skills, oriented on continuous process improvement. 
  • Responsibility for customer/partner relation growth. 


Nice to have: 

  • Experience with IoT products in building automation and physical access control. 
  • Mastery Degree in Computer Science or related field. 
  • Understanding of general security concepts. 
  • German language skills. 
  • Basic knowledge in C++ and DLL development. 


 Sounds like a perfect match ? Apply today and join the CoreWillSoft team! 


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