Trainee .NET developer with German

Innowise Warsaw 2026-10-20

Requirements:

  • Understanding of SOLID principles and OOP
  • Knowledge and application of design patterns
  • Understanding of asynchronous programming principles in C# and practical experience
  • Experience with ASP.NET Core Web API
  • Experience with Entity Framework
  • Experience with SQL
  • Conversational German at B1+ level

Would be a plus:

  • Experience working with third-party APIs
  • Experience with MediatR
  • Link to a GitHub repository with projects
Innowise Group is an international IT company founded in 2007. We have been developing software for 18 years and have implemented more than 1300+ projects for clients from 30+ countries. Innowise Group brings together about 2600 professionals, and our development centers are located in Poland, Lithuania, Belarus, Ukraine and Georgia.

Requirements:

  • Understanding of SOLID principles and OOP
  • Knowledge and application of design patterns
  • Understanding of asynchronous programming principles in C# and practical experience
  • Experience with ASP.NET Core Web API
  • Experience with Entity Framework
  • Experience with SQL
  • Conversational German at B1+ level

Would be a plus:

  • Experience working with third-party APIs
  • Experience with MediatR
  • Link to a GitHub repository with projects
  • Conversational English at B1+ level
Requirements: .NET, ASP.NET MVC, Entity Framework, SQL, C# Additionally: No dress code, Modern office, Free coffee.