Andrew Ong served in the Royal Malaysian Air Force as an Aircraft Technician and as a Commissioned Army Officer for 15 years.  Upon leaving the services, he joined the construction industry as Project Director specilaising in foundation engineering (piling and pilecap works).

In 2007, Andrew ventured on building his own business in Indoor Air Quality.  His business brand – Air Sense Asia – has developed into a Total Air Hygiene and Green & Sustainability service provider for selected clients locally and international.  He is a trained IAQ Lead Assessor and studied as Certified Indoor Environment Consultant and Green Project Management.  Andrew has also been engaged to initiate and carry out product development consultancy for global clients.

As part of his lifestyle, Andrew conducts specialised Business Entrepreneurship and Mentoring programs, which are unique and mindset changing.  He has trained many business owners and entrepreneurs in Malaysia, Indonesia, South Africa, Papua New Guinea and Vanuatu.