.NET Trainee

Andersen is an international IT company and one of the leaders in outsourced software development. We create digital products for fintech, banking, healthcare, logistics, e-commerce, and many other industries. .NET at Andersen means building modern backend solutions, working with complex business logic, and growing your career on world-class projects.

A traineeship is more than just learning. It is the fastest path into IT for those who have already mastered the fundamentals and are ready to take the next step toward a professional career.

The .NET Traineeship at Andersen is an opportunity to dive into backend development using a modern technology stack, gain hands-on experience, and start your career in a team of professionals.

Applications are open in Poland: candidates from Warsaw and Kraków attend the program in-office, while participants from other cities across Poland can join online.

What we offer:

5 months: from your first day in the Lab to your first day on a commercial project.

Full-time commitment — 5 days a week, 8 hours a day. An intensive format designed to help you quickly reach a confident Junior level.

Bring your own laptop. Your laptop + our training program = a specialist ready for real-world challenges.

Practice-oriented learning. The training project closely replicates work on commercial products.

Employment upon successful completion of the program.

Who we are looking for:

Aspiring specialists who see their future in .NET development, are ready for intensive growth, want to expand their technical expertise, and are eager to contribute to the development of large-scale, high-load business solutions.

Required qualifications:

English proficiency at an Intermediate level or higher;

Strong knowledge of C# and the .NET platform;

Understanding of OOP principles and SOLID;

Knowledge of algorithms and data structures;

Understanding of relational databases and SQL;

Solid theoretical knowledge or practical experience with ASP.NET Core, Web API, and Entity Framework;

Educational, pet, or test projects in your portfolio.

Nice to have:

Knowledge of JavaScript and CSS;

Experience with Angular;

Technical background;

German proficiency at an Intermediate level or higher.

What makes us great:

Experienced mentors and regular technical assessments. You will always understand your current level and know what to focus on next.

A personal coordinator throughout the entire traineeship. They will help with organizational matters, provide support, and guide you until you join a project.

Immersion in enterprise development. Learn the approaches and technologies used on large international projects.

A transparent growth system. A clear career path and real opportunities for rapid professional development.

Continuous learning. Access to our own educational platform with courses, learning materials, and internal development programs.

A strong engineering community. Collaborate with experienced developers, exchange knowledge, take part in internal meetups, and receive support from colleagues at every stage of your professional growth.

Apply now — we review every application.

Invest in learning today to build your career with confidence tomorrow.