Abdurrahman Şimşek, after working as a Mechanical Engineer at the Ministry of Agriculture and Rural Affairs and İller Bank, had resigned in 2007 and continiued his carrier in the Private Sector. Following 4.5 years of service as MSc.Mechanical Engineer for national and international Projects in COWI which is an engineering and consultancy company of Denmark origin, he had continued his engineering activities by establishing his Private Company in 2012.  He had worked as MSc.Mechanical Engineer in many national and international projects until the Limited Company was established in May 2021. AEK PROJECT ENGINEERING CONSULTANCY CONSTRUCTION TRADE LIMITED COMPANY, was established by MSc.Mechanical Engineer Abdurrahman Şimşek in May 2021.