Our Team
Yvette Simpson, Director
Yvette Simpson is a seasoned Executive Business Partner and the Founder of The Y Principle.
With 30 years of experience partnering with
C-Suite leaders, Board members, and Founders, Yvette has an in-depth knowledge of administration and business support, strategic initiatives, and a great appreciation for staff engagement and emotional intelligence. Yvette enjoys being “the people’s person” and bringing a smile to the workplace.
Throughout her career, Yvette has worked across diverse industries including finance, health, management consulting, manufacturing, FMCG, and startups.
Yvette has been recognised externally for her contribution to the profession, including recently being awarded Virtual Business Support Professional of the Year (2025) by the Australian Institute of Office Professionals (AIOP).
She was also awarded Travel Manager of the Year (2019) and was featured in Executive PA & Chief of Staff Magazine. Yvette has been invited to speak at leading industry forums such as the Executive Assistant Network Congress and EA Congress with Intrepid Minds.
Cathrine Macri, EA & Office Manager
Cathrine is an accomplished administrative professional with more than 15 years experience across Not for Profits, Digital & Media Agencies, Start-ups & ASX Listed companies.
Cathrine's experiences span across the administrative spectrum, including Executive Assistance, Office Management, Events Management, Workplace Experience and HR coordination.
Cathrine is passionate about creating and maintaining an inclusive and positive company culture through the implementation of thoughtful and creative activities for staff engagement and cultural celebrations. She is also highly experienced in creating onboarding playbooks, introducing recognition programs and implementing company policies and procedures, to create an overall people focussed workplace.
A highly efficient and thought driven team player, Cathrine has been part of The Y Principle since August 2023, supporting clients with event management, travel bookings, diary management and general executive business support.
Jen Sharrock, Executive Assistant
Jen is a dynamic administrative professional with 20 years experience as an Executive Assistant across a variety of industries including FMCG, Airline, Media, Government, Finance Investment and Hospitality.
Jen's experiences span across the administrative spectrum, including Executive Assistance, Board Assistance, Events Management, Office and Operational Management.
Jen is dedicated to providing high level support. She is known for her ability to make leadership more effective by streamlining executive workloads, giving leaders the time and space to focus on the work that truly matters.
With strong experience supporting boards and navigating board requirements, Jen ensures that governance runs smoothly and efficiently. She has built a reputation for adaptability, professionalism, and a people-focused approach. Whether working alongside executives or guiding organisational processes, she brings a thoughtful balance of structure and creativity that helps teams and leaders thrive.