
Jonathon Coleman
MANAGING DIRECTOR / MORTGAGE PLANNER
Jonathon has over 19 years experience in mortgage broking, having worked with Lendworx, Apple Loans, Mortgage Solutions Tasmania and The Home Loan Shop.
He has a vast knowledge in lending and his advice has assisted thousands of clients achieve their property and finance aspirations over his career, from First Home Buyers to Professional Property Investors owning hundreds of properties.
Jonathon takes pride in his work, treating every client with the same organic, transparent and professional work ethic whether the loan is for 10 thousand or 10 million. And he’s a nice guy that’s easy to deal with as well.
Brian Healey
MORTGAGE BROKER
After working with CBA, ME Bank and more recently MyState Bank over the past 20 years, Brian excels in the assessment of loan applications.
He has a wealth of knowledge in Home Loans, Business Loans and Equipment finance.
So it goes without saying, Brian’s professional background has One Stone Finance perfectly placed to assist you.
If anyone that can find a way to secure a loan for their property, whilst navigating the shifting sands of Bank processes and procedures, its Brian.
Brian is passionate in helping people achieve their goals and understands how the right home loan can do this for them.


Damien Kosi
MORTGAGE BROKER
Damien has a wealth of knowledge in the Home Finance space.
Having spent over 16 years in the industry with NAB and more recently MyState Bank, he brings with him invaluable insights as to what banks are looking for when it comes to home loan assessment.
Damien specialises in assessing, preparing and submitting complex loan applications for our Self Employed clients.
He is also an enthusiastic advocate for assisting and guiding First Home Buyers with advice on getting into the market and how to go about it.
Making people’s dreams a reality is something Damien is passionate about and being able to achieve this on a daily basis is what drives him.
We are delighted to have him as part of the One Stone Finance family.
Narida Arnott
MORTGAGE BROKER
Narida brings over 20 years of experience in the finance industry, along with a strong drive and passion, to offer tailored advice to all her clients’ individual scenarios.
Whether they be First Home buyers breaking into the property market, property upgraders, or experienced investors building wealth through property portfolios, Narida assists clients all over Australia achieve their financial goals through well-structured lending and credit advice. She values building lasting relationships with clients and lenders alike. Being part of your long-term financial success is where Narida finds joy and satisfaction in her work.
Narida has achieved Platinum broker status and awards from the industry, having gone from strength to strength since specialising in Mortgage Broking 6 years ago.


Cathy Stephens
EXECUTIVE ASSISTANT
Cathy has over 20 years experience in providing administrative support to ensure excellence in customer experience and service delivery to clients. Her attention to detail and organisation skills assist the One Stone Finance team to provide the outstanding service our clients can count on. Cathy thrives on problem solving and especially enjoys the satisfaction of being a part of achieving clients’ goals.
Mamta Tripathi
CREDIT ANALYST / LOAN ASSISTANT
Mamta is a highly skilled Credit Analyst and holds a master’s in business administration along with Certificate IV in Finance and Mortgage broking. Mamta has dived headfirst into the world of financial risk assessment and credit evaluation, and with her keen eye for detail and love for digging into numbers, she excels at dissecting financial statements and researching industries. She is a collaborative and results-driven Credit Analyst, who thrives in dynamic environments where teamwork and problem-solving skills are paramount.
Outside of work, she enjoys volunteering in community outreach programs and participating in team-building activities to strengthen bonds and foster a positive work culture.


Gina Williamson
CREDIT ANALYST / LOAN ASSISTANT
Gina is a seasoned Administrator with broad experience in the Banking, Real Estate, and Health industries. She’s adaptable, organised, and thrives in fast-paced environments with competing priorities and deadlines.
Her strengths include clear communication, effective time management, and a strong focus on providing excellent customer service. Gina’s top priority is making sure clients are happy and eager to come back and see us time and time again.