Full-Stack Engineer (C#/.NET)

Standard (Mon-Fri) Environmental Conditions Office Job Description At Thermo Fisher Scientific, we develop technologies that help our customers make the world healthier, cleaner and safer. Behind these innovations are talented engineers building software that supports scientific discoveries and real-world applications. We're looking for a Full-Stack Engineer with a strong C#/.NET background to join our experienced team of seven engineers in Brno. Our team is currently transitioning towards AI-native software development, and we're looking for someone who's excited to be part of that journey. You'll have the opportunity to explore modern AI-assisted development tools, influence how we build software, and contribute to applications used in the field of spectroscopy. If you enjoy solving complex technical challenges, exploring new technologies, and working with people who share your passion for engineering, we'd love to meet you!

About Thermofisher

Access to our Hackerspace, equipped with a VR headset, 3D printer, Arduino, LEGO Mindstorms, a recording studio for videos, music, and podcasts, and much more.

Responsibilities

What will you do?

• Develop and enhance software applications using C#/.NET, ASP.NET Core, and Microsoft SQL Server, with opportunities to work across the full stack.
• Contribute throughout the entire software development lifecycle, from early research and feasibility studies to implementation and long-term maintenance.
• Explore AI-native development practices, using AI-assisted tools and emerging agentic workflows to improve how software is designed, developed, and maintained.
• Collaborate with experienced engineers and the Product Owner to turn requirements into reliable, scalable software solutions.
• Investigate complex systems, troubleshoot technical challenges, and find creative solutions to engineering problems.
• Occasionally build proofs of concept and experiment with new technologies, including AI-powered development approaches.
• Develop an understanding of spectroscopy and how our software supports scientific applications.

Requirements

Who are we looking for?

• At least 2 years of professional experience in backend development, particularly with C# and .NET.
• Strong analytical thinking and problem-solving skills, with the ability to understand and navigate complex software systems.
• Practical experience with Microsoft SQL Server, database design, and SQL queries (at least 1 year).
• Genuine interest in AI-assisted software development, including familiarity with current AI tools, AI/ML concepts, and emerging agentic workflows.
• A proactive, collaborative mindset and the ability to communicate effectively within an international engineering team.
• Good command of English.
• A university degree or equivalent qualification.

What would be a plus?

• Experience with React and TypeScript, or motivation to develop your frontend skills.
• Familiarity with Docker, CI/CD pipelines, or cloud technologies such as AWS.
• Experience working with established software products, legacy codebases, or complex architectures.
• Curiosity about scientific applications or spectroscopy.

Benefits

What do we offer?

• Flexible working hours, 25 days of vacation, and 5 sick days per year.
• Annual bonus, pension contribution, and preferential rates on life and health insurance.
• Discounted mobile plans for you and your family, a free MultiSport card, meal allowance, an on-site canteen, and fresh fruit or vegetables every day.
• Comfortable workspaces, relaxation zones, an on-site gym, outdoor sports facilities, and massages available in the building.
• A friendly, collaborative environment with plenty of opportunities to connect through sports teams, company activities, and even our own rock band.

What technologies will you work with?

Backend

C#, .NET, ASP.NET Core, Microsoft SQL Server Frontend: React, TypeScript, Electron Cloud & DevOps: AWS, Docker, GitHub, Jenkins, JFrog Additional technologies: C++, Python, VB6, batch scripting AI-assisted development: Modern AI coding assistants and emerging agentic development tools