STACK is an online system for computer aided assessment. It was designed for mathematics teaching, but STACK is able to do more than mathematics. It can be applied to all disciplines were mathematics is somehow involved, which is especially the case in the technical courses in engineering programs. This contribution reports about the implementation of STACKproblems to mechanics and electrotechnics at Karlsruhe University of Applied Sciences (HsKA). Keywords: computer aided assessment, engineering education