Nadaraja was formerly with the Royal Malaysia Customs (1981-1997) as a Senior Officer of Customs having served in various units and his key areas of focus includes customs administration, import and export procedures, classification, valuation, licensing and compliance matters. He posses an in depth knowledge of various customs legislation including Customs Act, Sales Tax Act, Service Tax Act, Excise Act and other subsidiary legislation. He has vast experience in Customs matters and has been a guest lecturer at the Royal Malaysian Customs Academy in Malacca on various occasions to deliver lectures on various aspects of Customs laws and procedures.

In 1997 he left the Customs Department on optional retirement for private practice as an Advocate and Solicitor.

He is now involved in legal practice and at the same time is actively involved in conducting seminars and workshops on customs matters. He has also conducted in house training for various companies including statutory bodies and has advised and consulted upon by companies on issues such as customs and sales tax valuation, classification, service tax matters, drawback, refunds, exemptions and others. Some of the topics that Nadaraja conducted are :

HOW TO MANAGE CUSTOMS AUDIT AND INVESTIGATION

FACILITIES AND TAX INCENTIVES UNDER THE CUSTOMS ACT

MALAYSIAN IMPORT & EXPORT PROCEDURES & DOCUMENTATION

MALAYSIAN CUSTOMS CLASSIFICATION OF GOODS

LICENSED MANUFACTURING WAREHOUSE (LMW) : Licensing, Facilitation and Compliance

He was officially appointed by the Customs Department to conduct Basic Customs Course for forwarding agents during the year 2005 – 2007.

He is also an Associate of the Malaysia Institute of Chartered Secretaries & Administrators and Chartered Tax Institute of Malaysia (ACTIM) and is currently involved in customs litigation and rendering of consultancy & advisory services on Customs matters.