N-iX seeks a Senior C#/C++ Engineer to design and develop new features for their client's software (metal construction, using C#/WPF). Responsibilities include optimizing existing C++ code, standardizing the programming system, interpreting construction drawings, estimating tasks, performing code reviews, and implementing unit/integration tests (Google Test). Experience with C# & WPF, C++20, MFC, OOP, SOLID principles, and SQL is required. Familiarity with Jira, Confluence, and Perforce is a plus. The role offers a flexible work format (remote, office-based, or hybrid), competitive salary, career growth opportunities, and various benefits.