INT-095409 13.10.2025

Senior Full-Stack Software Engineer

Zug
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Pharmaceutical / Biotechnology / Chemical
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Temporary full time

Flexsis is part of the Interiman Group, one of the leading providers of personnel services in Switzerland. Thanks to our solid expertise and the competences within the Interiman Group, we offer tailor-made solutions in personnel consulting.

For our client Roche Diagnostics in Rotkreuz, we are looking for a motivated and reliable (m/f/d)

Senior Full-Stack Software Engineer 80-100%

Description of the mission

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.

Required profile

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.

Nice to Have:

Experience working with instrumentation.
Experience in tackling and successfully executing a legacy system overhaul or modernization project.
Knowledge of Linux operating systems, including shell scripting and system services, is valuable for deployment and debugging on the instrument.
Knowledge in the area of networking or cybersecurity.
Familiarity with secure coding practices.

Start date: asap - latest: 01/01/2026

Planned duration: 12 months

Extension: possible
Remote/Home Office: 50% remote possible

Are you interested and would you like to seize this opportunity? Then we should definitely get to know each other!  Simply click on "Apply now" and we look forward to receiving your complete application documents.