Through Mladen's entrepreneurial journey, he has won 1st place at the IBISWorld Innovation Competition, 1st place at the University Startup World Cup (ICT Category) and was a finalist in the Global Impact Challenge.

He founded Recrew, a two-sided platform for builders and contractors to hire specialty trades subcontractors within the construction industry. He also founded Your Party Project - a service-based event organisation and party hire business, which he later sold. He took BindiMaps through the Melbourne Accelerator Program in 2019; an indoor navigation system which has been optimised for people who are blind or vision impaired.