The move was necessitated following Nishant Rao's move to join Freshdesk as the global Chief Operating Officer from LinkedIn, Internet and Mobile Association of India (IAMAI) said in a statement.
Shah co-founded FreeCharge in August 2010.
In April last year, FreeCharge was acquired by e-commerce firm Snapdeal. Post the acquisition, FreeCharge continues to be an independent entity under Shah's leadership.
IAMAI has appointed Vishwas Patel, Chief Executive Officer of CCAvenue, as its new treasurer.
Vinodh Bhat, co-founder, President and Chief Strategy Officer at Saavn, will continue as the Vice-Chairman of IAMAI.
Established in 2004, IAMAI comprises of mobile content and services, online publishing, mobile and online advertising, ecommerce and digital payments players, among others.