Dato' IR Lim is a Chartered Engineer (C Eng) registered with the Engineering Council, United Kingdom and Professional Engineer (C Eng) registered with the Board of Engineers, Malaysia. He is a member of the Institution of Engineers Malaysia (MIEM), Institute of Engineering and Technology of United Kingdom (MIET), an Honorary Fellow of the ASEAN Federation of Engineering Organisation, and a member of the Malaysian Institute of Management. He also holds a Master in Business Administration from Deakin University, Australia and had undergone many technical and management training in Japan

Dato' IR Lim had also served the Malaysian Government in various capacities as follows:
i) 2010 - 2013 Deputy Minister of Finance
ii) 2006 - 2008 Deputy Minister of Tourism
iii) 2003 - 2006 Deputy Minister of Information
iv) 1999 - 2003 Parliamentary Secretary, Ministry of Transport
v) 1995 - 2008 Member of Parliament ( Petaling Jaya South )

Dato' IR Lim is actively involved in various NGO's and has held various key positions, like Adviser to The Federation of Malaysia Chinese Clans and Guilds Youth Association, the Lim Clan Association Malaysia, Gerakan Belia Bersatu Malaysia, the Business and Commerce Association of Petaling District, as well as the Association of Hawkers and Small Traders of Petaling Jaya.

1. Chairman of Jiankun International Berhad 
2. Chairman of Advance Information Marketing Berhad

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