Our Principals

  • David Grdunac CA, B Bus

    Dave Grdunac

    David is CA qualified and started working in business services in 1999 and specialises in providing advice and educating clients in relation to their business performance.  He enjoys managing his clients annual compliance work and solving their day to day issues including budgets/cash flows and bank finance.

    David services a variety of clients at Acorn Consulting Group including professionals within the financial, medical, advertising/branding/photography and wholesale/retail business sectors. 

    Hobbies:  Avid Movember supporter with a green thumb.  If he wasn’t an Accountant he would have been a professional golfer.  

  • Winny Sulaiman CPA

    Winny Wulaiman

    Upon graduating from Melbourne University in 2007, Winny commenced her professional Public Practice career with McMasters’ Accountants.   In 2010, she then joined GMK Partners’ Business Services division where she was exposed to various industries and special projects.  Since joining Acorn Consulting Group in 2013, Winny’s career has continued to flourish and she continues her work across various industries including hospitality, medical practitioners, real estate agencies, and the retail and manufacturing sector. Winny has gained valuable experience and expertise in Buying/Selling and Valuing business, Cash Flow Projections & Analysis, Finance Applications, and Superannuation Guarantee Audits.  

    Hobbies: Travelling

  • Zubin Mahanta - CPA


    Zubin joined the public practice industry in 2008 and has since worked on various clients in the retail, manufacturing, hospitality, consulting and IT industries to mention a few. Apart from being a qualified CPA, Zubin holds a Masters of Business Administration, which gives him the advantage of understanding not only compliance and tax issues, but also business processes and management. Working in the SMSF area for a number of years, Zubin has gained in depth understanding of administration, compliance and audit of SMSFs. With an informal yet professional approach, Zubin has developed strong relationships with his clients.

    Hobbies: Travelling, Golfing, Motor Sports

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