Behind every Sandstone success is a team.

Together, we’re far greater than the sum of our parts.

Teamwork and technology are two of Sandstone’s keys to success, and the leadership that drives our team forward is one of our greatest strengths. We have gathered together some of the industry's best minds to help us reach our objectives, and today we stand proud as an example of how living your company values can achieve the loftiest of goals.

Meet our team. 


Bob Hall

Chairman / Co-founder


A former IBM employee, Bob co-founded Sandstone Technology with Violet Yu in 1996. Nicknamed ‘Bob the Builder’, he is always full of ideas and loves developing them into great products.


Violet Yu

Executive General Manager HR
and Co-founder


Co-founding Sandstone after years at IBM, Violet is passionate about technology and people. Having performed almost every role at Sandstone, she is now focused on hiring the best of the best for the company.


Michael Phillipou

Chief Executive Officer

Deeply passionate about people leadership, banking, financial services & technology, Michael has over 20 years' experience in financial services holding Executive people leadership roles in Advice, Retail & Business Banking, Digital Banking, and Enterprise Technology Sales & Transformation programs for Westpac, MLC-aligned businesses and Bendigo Bank, as well as co-founding a disruptive digital banking business.

Ross Watts

Chief Customer Officer


Ross is passionate about banking, financial services, and technology  and an active champion of mental health and education. He has over 20 years' experience in financial services holding regional and national executive, consulting, and leadership roles at not-for-profit organizations, SMEs, Barclays, Lloyds TSB in the UK, Westpac Group, and BT Financial Group in Australia.


Dom Monty

Executive General Manager Digital Banking

Dom joined Sandstone from IBM in 2001. He has a passion for technology and all things digital.


Andy Thompson

Executive General Manager Europe


Andy has held a diverse range of technical and business roles in his 14 years at Sandstone.


Raymond Yap

Executive General Manager Digital Acquisition

Ray has been with Sandstone for over 10 years after working in senior lending roles for leading financial institutions including Citi, AMP Bank and ING Direct.


Poli Konstantinidis

Executive General Manager Origination, AI & ML


A highly regarded Financial Services professional with over 20 years’ experience in Risk Management, Operations, Governance and General Management. Poli has a proven track record of business performance transformation, business partnering, strategy derivation & execution and business growth with leading organisations including Experian, GE Capital and Latitude Financial Services.

Chaitanya Pinnamaneni

Chief Technology Officer

Chai is an ardent advocate for agile and DevOps practices, and thrives on finding innovative solutions to complex problems.


Interested in a career in Fintech?