Andrew served in various quality control and quality assurance roles from 1988 to 1995. In 1995 Andrew was appointed as a GMP auditor by the Australian National Registration Authority (now the Australian Pesticides and Veterinary Medicines Authority) and conducted GMP audits of veterinary medicines manufacturers and contributed to development of the Authority’s operating procedures.

In 1996-1997 Andrew was employed by the Australian Red Cross Blood Service as Quality Assurance Officer primarily to coordinate the NSW Blood Bank internal GMP Audit programme and conduct GMP audits of Blood Bank centres across NSW.

For 14 years from 1997 – 2011 he was a GMP Inspector and Quality Systems auditor with the Australian Therapeutic Goods Administration (TGA). He conducted inspections and audits of a broad range of manufacturers of therapeutic goods including Sterile and Non-sterile Medicines, Vaccines, Biologicals, Complementary Medicines, and Active Pharmaceutical Ingredients; and Sterile and Non-sterile Medical Devices and In-Vitro Diagnostic kits; both in Australia and internationally. Andrew was also engaged by the World Health Organisation under short-term contracts by the WHO Essential Medicines and Health Products programme as a GMP inspector in 2013-2017.

Andrew now runs his own consultancy, conducting audits of manufacturers and API suppliers; supporting clients undergoing regulatory inspections by the TGA and other PIC/S member agencies; preparing and reviewing pharmaceutical quality systems documentation.