The list includes the Tun Razak Exchange Master Plan, Kuala Lumpur International Airport Buildings Architectural and Master Plan, the Federal Administrative Capital City of Putrajaya Master Plan and Pagoh Educational Hub.

He also played a part in the development of the Kuala Lumpur Convention Centre and other international mega-projects such as the Kazan Smart City Development Plan, Republic of Tatarstan and Tang Shan Shopping Centre in Beijing, China.

Esa was the elected president of the International Union of Architects (UIA) for the 2014-2017 term, becoming the first Malaysian to hold the position.

UIA is an international non-governmental organisation recognised by Unesco as the only international architectural union that represents over 1.3 million architects from 115 countries.