Do you want to help shape the future of .NET, one of the world’s most widely used open-source developer platforms? We are looking for a passionate Software Engineer to design and build modern, high-performance libraries that power millions of applications across desktop, mobile, cloud, and IoT environments.
In this role, you will contribute to .NET libraries and the broader .NET. You will help design and implement new features, improve existing components, and enhance core platform capabilities across areas such as the Base Class Library (BCL), data access frameworks, and web application frameworks.
You will work on challenging engineering problems involving performance, scalability, reliability, APIs, and developer experience. This includes designing clean, maintainable architectures, improving efficiency, and building solutions that developers worldwide rely on every day.
We embrace modern engineering practices, including AI-assisted development workflows. You will leverage AI tools and technologies to accelerate development, improve code quality, assist with code generation and refactoring, enhance debugging and testing, automate repetitive tasks, and support faster experimentation and problem solving. We value engineers who can effectively combine strong software engineering fundamentals with emerging AI capabilities to deliver better outcomes.
As part of our open development culture, you will collaborate with engineers and the global developer community through GitHub, contributing to discussions, design proposals, code reviews, and open-source initiatives. You’ll have the opportunity to influence the direction of a platform used by millions of developers around the world.
Responsibilities
Qualifications
Software Engineering IC3 - The typical base pay range for this role across Czechia is Kč 966,000.00 - Kč 1,727,000.00 per year. Certain roles may be eligible for benefits and other compensation.
Find additional benefits and pay information here:
https://careers.microsoft.com/v2/global/en/corporate-pay/czech-republic-corporate-pay.html
This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.
Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.

Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it embraces it. Each day we make progress together by showing up as our authentic selves. We show up with a learn-it-all mentality. We show up cheering on others, knowing their success doesn't diminish our own. We show up every day open to learning our own biases, changing our behavior, and inviting in differences. Because impact matters.
Microsoft operates in 190 countries and is made up of approximately 228,000 passionate employees worldwide.