He is the Group Managing Director of Melewar Group Berhad which has investments in various sectors including financial services, steel manufacturing, tourism, education, logistics, real estate development and construction. The group's investments include the public-listed companies MAA Holdings Berhad, Melewar Industrial Group Berhad,Mycron Steel Berhad and AEC Education plc.

Tunku Iskandar is also the Chairman of Neucor Holdings Pte Ltd and Neucor Alliance (M) Sdn Bhd, which are in distribution and direct selling in Singapore , Malaysia and Indonesia.

In 2001, he was appointed to the National Economic Consultative Council (NECC) of Malaysia which was formed with the mandate to advise the Government on the country’s strategic planning.

Tunku Iskandar holds a Master of Science Degree in International Marketing of the University of Strathclyde , UK . He is also a Fellow of the Chartered Institute of Marketing ( UK ), the Institute of Administrative Management (UK) and the Institute of Marketing Malaysia . In 1984, he received the “Triple-A” Alumni Achievement Award from the Asian Institute of Management (AIM), Philippines .

He was awarded the Darjah Setia Negeri Sembilan (DNS) in 1987 and was also awarded the Darjah Seri Paduka Tuanku Ja’afar Yang Terpuji (DPTJ) in 1989 by His Royal Highness Yang DiPertuan Besar of Negeri Sembilan , Malaysia . Tunku Iskandar is the grandson of the First Yang DiPertuan Agong ("King") of Malaysia.