Senior .NET Developer

About WISeKey

WISeKey International Holding Ltd (WISeKey) is a leading global cybersecurity company, headquartered in Switzerland. WISeKey specializes in digital identity, authentication, secure communications, IoT, and blockchain-based solutions, ensuring trust, security, and compliance for governments, businesses, and individuals worldwide. With a strong presence in Europe, Asia, and the Americas, WISeKey builds technology that protects digital assets and strengthens digital trust.

WISeKey is looking for a brilliant full-time .NET Developer to be part of a talented core technical team passionate about building innovative applications.

Your Role

• You will be part of the software product development team.

• You will be responsible for development of key software components.

• You will have the special blend of creativity and logic that makes an excellent software developer, and apply those skills in creating the next generation of enterprise identity and security technology.

• You will be broadly involved in all aspects of building great web based products, from design and development, to implementation, in a team environment.

• Strong software development skills including modeling and development practices.

Responsibilities

• Develop, enhance, and maintain .NET applications with a strong focus on security and authentication modules.

• Design and implement robust business logic to support core products and services.

• Manage and optimize database integration to ensure performance, scalability, and reliability.

• Collaborate closely with the Swiss development team, ensuring alignment on requirements, architecture, and delivery.

• Participate in code reviews, testing, and documentation to maintain development standards.

• Contribute to technical discussions, share expertise, and support team members when necessary.

• Have a proven track record delivering high quality products.

• Have talents for understanding customer challenges and developing innovative solutions.

• Have a passion to build great software.

Skills, Qualifications and Experience:

• Proficiency in C#, Visual Studio, MariaDB, MS SQL and related technologies:

1. Technologies: 5 years of experience with .NET, at least 2 years of experience with .NET Core, .NET Core Entity Framework.

2. Solid understanding of security principles, authentication protocols, and best practices in software development.

3. Languages/Formats: C#, JavaScript, TypeScript, Json, T-SQL, HTML, CSS, XML.

4. Architecture: SaaS, Multi-tier architecture design.

5. Web development: ASP.Net core, MVC.

6. Proven experience in Database: MariaDB, PostegreSQL, MS SQL Server and related technologies.

7. OO Design and Development.

8. Knowing Git.

9. Unit Tests.

10. Strong problem-solving skills, attention to detail, and ability to work independently and in a team.

11. Good communication skills in English (spoken and written).

A big plus:

• Have experience with ai coding assistant like Github CoPilot, Cursor, Winsurf, etc.

• Proficiency in Java, C++,NodeJS, Python, NoSQL, Security and Cryptography.

• Strong experience in Large system design and implementation with skills about High availability and Scalability.

• Demonstrated software development excellence or 5+ years software development and engineering, IT consulting, professional services and/or enterprise software development experience.

• Intermediate English in writing.

• Effective communication and teamwork.

Benifits:

• Competitive salary and bonus

• Social insurance, health insurance, unemployment insurance according to Labor Laws

• Opportunities to be trained in the professional environment to maximize your potential

Start date: Immediate availability preferred.