Our goal is to make payroll and HR simple for enterprises.

Our Values & Mission
Design thinking & innovation
We value great design, elegant solutions and contemporary styles that make doing business more human.
Commitment & belonging
We value team culture and nurture a sense of belonging - everyone working together and committed to achieving a common goal.
Integrity & pride
We have integrity and always respect our users - we stand with pride behind everything our company produces.
Meet the team
Definitiv is home to a dedicated collection of developers, industry experts and customer relations wizards.

Roy Mellon is the Founder and Chief Executive of the Definitiv Group. Roy is passionate about offering companies a modern, efficient and better alternative to people management.
Roy Mellon
Chief Executive

As Non-Executive Director, Rhett Tregunna lends his wealth of business and entrepreneurial experience to help drive the commercial growth of Definitiv.
Rhett Tregunna
Non-Executive Director

Mathew Paine is the Director of Human Resources at ICC Sydney. Mathew has over 18 years of senior Human Resource Management experience within the private and not for profit sectors in both Australia and the U.K.
Mathew Paine
Non-Executive Director

Tyson Stolarski has led the development team for five years and is responsible for bringing the vision for Definitiv to life.
Tyson Stolarski
Chief Technology Officer

Tania Cole spearheads the operations for Definitiv. With over ten years in the payroll profession, Tania has developed unparalleled skills and knowledge in payroll management.
Tania Cole
Operations Manager

Rebecca Mancini is responsible for overseeing the sales, marketing and partner program at Definitiv. She is most passionate about developing strategies to enhance the customer experience.
Rebecca Mancini
Business Relationship Manager
Awards & Memberships







Working Spirit
As an equal opportunity employer, we encourage diversity in the workplace. We are a proud supporter of Working Spirit, a not-for- profit organisation helping veterans to find rewarding employment.


General Sir Harry Chauvel Foundation
The General Sir Harry Chauvel Foundation was created in honour of General Sir Harry Chauvel, his achievements and his strong values. Through education and commemoration, the Foundation seeks to inspire future generations of Australians.