Schalk is a software engineer and product design consultant working on various personal, commercial, and open-source projects. He usually finds himself at the intersection of interaction design and engineering, having done contract work for National Treasury, The Google Foundation, Replit, Sea Monster Entertainment, Seedstars, CSS-Tricks, and various others. He has lectured in a senior capacity at the Academy of Digital Arts, codeX, Open Window, and the University of Pretoria, and co-created the Interaction Design degree at Cape Town Creative Academy. He also co-founded Front-end Development South Africa (FEDSA) and South African Product Design (ZAPD).