The perfect candidate for the
Senior Full-Stack Software Engineer
brings minimum 5 years of professional software development experience and additionally deep expertise with C# and the .NET framework for building backend services. Also we are looking for someone with strong communication skills in English (and a proven track record as a versatile team player).
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Start Date: ASAP, latest Possible Start Date: 01.01.2026
Planned Duration of Employment: 12 months, extension: possible
Workplace: Rotkreuz
Workload: 80 - 100%
Duties
Design, develop, and maintain high-quality software across the full stack for our core instrument software.
Play a key role in building and evolving robust back-end controllers using C#/.NET that interface with instrument hardware and handle data processing.
Implement the new front-end user interface using React and TypeScript, replacing the existing legacy GUI for instrument management.
Collaborate closely with project leaders, Testers, and other engineers to define, estimate, and deliver features.
Ensure all development practices and delivered software meet the stringent requirements of a regulated environment, including documentation, testing, and compliance standards.
Participate in code reviews, design discussions, and mentoring junior team members.
Diagnose and resolve complex technical issues, bottlenecks, and performance challenges related to software-instrument communication.
Must Haves:
5+ years of professional software development experience.
Deep expertise with C# and the .NET framework (or .NET Core) for building backend services (e.g., RESTful APIs, device communication layers).
Proficiency in modern front-end development using React (or a similar modern framework like Angular/Vue) and TypeScript.
Experience working in a regulated industry (e.g., Medical Devices, Scientific/Lab Equipment) with a strong understanding of compliance, security, and quality assurance best practices.
Excellent communication skills in English (fluent) and a proven track record as a versatile team player who thrives in a collaborative, cross-functional setting.