Executive Team

Kim Terrell, Managing Director


Mr Kim Terrell was appointed Acting Managing Director of Hearing Australia on 1 March 2018 and was appointed to the role of Managing Director on 30 August 2018 for a five-year term starting from 1 September 2018.
Kim’s extensive career includes working with and advising various ministers, Prime Ministers and their offices, to initiate significant improvements across various government programmes.
He played a key role in establishing three agencies, the Digital Transformation Office (DTO), Australian Sports Anti-doping Authority (ASADA) and CrimTrac, and is highly experienced in building innovative, high performing teams. Kim was instrumental in creating myGov and driving digital transformation across the Department of Human Services and the government.

He has a Bachelor of Arts degree, a Master’s Degree in Public Policy and has also received three Australia Day awards. In addition to his professional achievements, Kim was an Australian Swim Team member from 1981-1986 and attended the 1982 Commonwealth Games and 1984 Olympics - winning ten national titles and holding six Australian records.

Gina Mavrias, Chief Operating Officer


Ms Mavrias has a Bachelor of Science Degree and a Diploma of Audiology from the University of Melbourne and completed the General Management Program at the Australian Graduate School of Management in 2007.

Ms Mavrias has been a member of the Hearing Australia Executive team since 2004. Ms Mavrias has extensive knowledge of the business and the hearing industry and currently holds the role of Chief Operating Officer. She is responsible for the management of operations and service delivery across a national network of sites. This includes responsibility for human resource management, property, clinical policies and procedures, and marketing.

Brent Edwards, Director (NAL)

Brent Edwards, Ph.D., is Director of the National Acoustic Laboratories in Sydney, Australia. He has spent his career leading research and technology departments at major hearing aid companies GN ReSound and Starkey Hearing Technologies and at Silicon Valley startups SoundID and Earlens. His work has led to the development of innovative hearing technology, clinical tools, novel diagnostics and outcome measures that have benefitted hearing aid wearers and audiologists worldwide. Dr. Edwards founded and developed the Starkey Hearing Research Center that is a leading site for research in hearing impairment and cognition. Dr. Edwards is a Fellow of the Acoustical Society of America, a Fellow of the International Collegium of Rehabilitative Audiology, and Honorary Associate Professor at the University of Nottingham’s School of Medicine. Dr. Edwards received his Ph.D. in electrical engineering and computer science from the University of Michigan and was a Postdoctoral Fellow in psychology at the University of Minnesota.

Nick Fitzgerald, CFO

Nick joined the Hearing Australia executive team in February 2018 as the Chief Financial Officer and lead for Business Services.

He has worked in the Healthcare industry for the last 15 years, predominantly at Johnson & Johnson, in both Finance and Customer roles. He has served as CFO of the Consumer Products division across Australia and New Zealand and led the establishment of the Customer Excellence Division at Janssen Pharmaceuticals.

Nick has a Bachelor of Commerce, is a member of Chartered Accountants Australia & New Zealand as is a graduate member of the Australian Institute of Company Directors.

Mike Brent, Chief Information Officer


Mike was appointed to the role of Chief Information Officer at Hearing Australia in April 2019. Mike has enjoyed a rewarding career both in the Australian Public Service and the private sector. He has worked in many different roles in ICT over nearly 35 years, starting at the bottom as a batch scheduler in a computer centre and then undertaking many different roles ranging from technical delivery through to management of application development centres.
Mike has previously held senior roles in the Department of Human Services including General Manager ICT Infrastructure, where he was responsible for the integration and consolidation of three large infrastructure capabilities, and Chief Technology Officer responsible for the department’s ICT Strategy and Architecture.  Mike has a Bachelor of Computing from Monash University and a Masters of Business Administration from the University of Adelaide.


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