Windows .Net Software Engineer

Join CoreWillSoft GmbH and help build Windows-based software that protects critical facilities and infrastructure . We develop innovative physical security and access control solutions , integrating building automation, IoT devices, and high-security hardware.

You'll join an Agile, international team distributed across locations, with our headquarters in Bonn, Germany . We own the full product lifecycle — from discovery and implementation to release and operation — so your work will be visible, impactful, and close to real customer needs.

What you`ll do :

• Develop, maintain, and enhance Windows-based desktop applications using .Net.
• Maintain and develop DLLs written in C++.
• 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.

What we offer :

• Meaningful Impact: Build solutions that are used every day by thousands of businesses — your work will directly improve real-world security and connected device experiences.
• Product & Process Ownership: Help shape not only the product, but also how we build and deliver it — your ideas and decisions will have visible impact.
• Industry Influence: Contribute to key security standards and best practices, staying ahead of the curve in a fast-evolving industry.
• Modern Tech Stack & Hardware: Work with the latest hardware and the tools you need to do your best work.
• Time Off & Flexibility: Vacation days, paid sick leave, and public holidays in line with German legislation — plus flexibility built around outcomes, not micromanagement.
• Learning & Development Budget: We support continuous growth by covering hard and soft skills courses, trainings, and access to e-learning platforms.
• Coworking Support: Prefer not to work from home every day? We offer coworking compensation so you can choose the environment that fits you best.
• Language Learning Support: Monthly fixed compensation you can use to improve your English or German through the learning format of your choice.
• Strong Team Culture: Open collaboration, a flat structure, and thoughtful onboarding—your voice is heard, and you can make an impact from day one.

What you bring :

• 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.
• Basics knowledge of C++ and DLL development.
• 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.