Atty. Jess G. Diaz is the first Filipino to be admitted as a Barrister in Australia. He was formerly  Senior Legal Counsel at a multinational bank.

Councillor Diaz is the first Philippine-born and first Asian elected Councillor of Blacktown City.  He is also the first Filipino-Australian City Councillor in Australia.

Jess is recognized in the community and industry for his commitment to the needs of his clients and his service to the community.

He has a wealth of experience representing clients from individuals, families, corporations, to athletes, performing artists, celebrities, and high profile businessmen in various aspects of the law.

He is also active in the community and is founder of several community groups such as; Foundation President of Philippine Community Council of New South Wales, and Founder Philippine Sydney Jaycees.

Councillor Diaz, was appointed The Chairman Filipino Languages Syllabus Committee, NSW Board of Studies by the NSW Government's Department of Education, after lobbying for approval of Filipino to be included for study in the Higher School Certificate curriculum. Filipino was made an approved HSC language in term 4, 1995. The first HSC examination in 2-unit Filipino was on 27 October 1998.

He is formerly a Board Member of the NSW Board of Adult and Community Education (BACE).

Jess Diaz, settled and convened the trust founding and establishing the Multi-Purpose Centre in Western Sydney, lobbied and secured government funding for the purpose of acquiring the land. He has since focused on Volunteer based organisations.

He is also a Director and Counsel of foreign and domestic companies and is consulted by the Press, Government, and Non Government (NGO's) on issues relating to Social Justice, Immigration and Education Policy.