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The Team

Principal Lawyers is a two partner practice consisting of Ethem Kumsuz and Spiro Troussas.

Spiro and Ethem are colleagues who have been working together for over five years starting at a reputable medium sized law firm. In 2009, the pair made the decision to establish Principal Lawyers and give life to their vision of an innovative and accessible law practice.

The partners work together in a collaborative and collegiate environment that encourages openness and integrity – to ensure that you always receive a personal and professional service.

The Partners


Spiro commenced his legal career in 2001 at a reputable general practice firm wherehe learnt how to diligently conduct matters in various litigious legal fields including civil and commercial litigation, debt recovery, criminal law and family law. 

This experience was vital in providing him with an eclectic legal grounding and a stepping stone towards furthering his career, whereby he was able to pursue his passion for litigation and find employment practicing exclusively in commercial litigation for a reputable mid tier law firm.

Over the years Spiro has gained invaluable experience and has appeared in Courts all over New South Wales including the High Court, Supreme Court, Court of Appeal, Federal Court, District Court, Local Court and various Tribunals.

Spiro’s aim is to attain the most intelligent, practical and cost effective results for his clients in an expeditious manner. Focussed, experienced and strategically smart, Spiro is able to provide practical legal advice and quality advocacy skills across a broad range of litigation fields.

You can contact Spiro on 02 95172300 or by email at


Ethem prides himself on being candid, accessible and understanding the needs of his clients. Ethem gained a corporate background firstly at PricewaterhouseCoopers (PwC) where he worked as a management consultant.

Ethem also has experience working at the Crown Solicitor’s Office and mid-tier law firms.

Calling on his broad background and extensive experience he provides practical guidance to his clients. Additionally Ethem has a sound academic understanding of the law, having completed a Master of Laws.

He understands the importance of diligent advice and efficient practice in serving his clients needs.

Outside of work, Ethem is a family man and loves nothing more than spending time with his two young daughters.

You can contact Ethem on 02 95172300 or by email at

what people say about us

Hello Ethem

Thank you for all your effort and time spent with us over all the things that we have had you do for us over the last couple years and hopefully in the future where needed.

Karen and Ernie

I just wanted to pass on my appreciation and thanks for your services for the purchase of our property. Both Rachel and I realise it was a difficult process with the banks but thank you for getting it done.