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SIG Group Logo SIG Group · IT - Software Development

Backend developer C# / Tester

Switzerland, Neuhausen · Job Posted April 05, 2026
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Job Description

SIG is the place for you to build something incredible. We offer competitive compensation and an opportunity to partially work from home. If you join us, you will be part of a globally successful international company, which is leading its industry in sustainability, technology, and more. We think of ourselves as the career launchpad - a place to develop yourself fast with real work, real experience, real opportunities to build skills. You will be part of a highly motivated and dynamic team, you will have personal development opportunities, trainings and coaching opportunities from senior team members. If you show skill and willingness to learn, we'll back you all the way.

Job Responsibility

  • Maintain and develop our core application and its extensions
  • Design modern Web APIs, including authentication and encryption
  • Ensure unit tests and interface testing are performed
  • Ensure high security standards of the Web applications
  • Provide good quality documentation using appropriate tools (e.g., Swagger)
  • Give support in the implementation of interfaces for other teams
  • Close cooperation with external suppliers and other relevant SIG departments
  • Ideally support and extend our externally developed web interface

Requirements

  • At least 3 years of experience in C# and Web Development
  • Experience in agile software development with Scrum
  • Experience working with REST APIs
  • Understands how to create intuitive User Frontends (UI) and how to improve User Experience (UX)
  • Fluent in English, fluent in German is a plus
  • Has an analytic mindset and is able to transfer concepts into code
  • Good communication skills and can work as part of a team
  • Experience in the implementation of web applications and a deep understanding in modern IT architecture

Nice to have

  • Ideally, more than 2 years of frontend experience in JavaScript, Typescript, React
  • Ideally, more than 2 years of backend experience in NodeJS
  • Ideally, experience in using npm for web applications and Git for code versioning
  • Appreciated skills: C#, React, Typescript, System design, Unit-Testing and mocks, Software documentation, Git Version Control. Optional: MongoDB
  • Application experience: Visual Studio. Optional: Jira, Katalon, WPF, Azure DevOps, Docker, Cloud

What we offer

  • Competitive compensation
  • Opportunity to partially work from home
  • Part of a globally successful international company
  • Personal development opportunities, trainings and coaching opportunities from senior team members
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