Mike van der Heijden is a 17 year veteran of digital marketing (specifically search engine optimisation) and is the founder of Portal Ventures, a Melbourne consultancy  specialising in helping online marketplaces generate more revenue through effective and scalable search engine optimisation strategies. 

Portal Ventures also invests in early stage classifieds, service & e-commerce marketplaces globally and has invested in marketplaces such as LatAm Autos, Fresha, Programa, CarsFast, PriceMyCar, SideSpace & Omnyfy.