Group Executive Team

Prior to joining Calibre Peter held a number of senior and executive roles with Transfield Services including operations in their Australian, Canadian and US offices.

Peter holds an MBA from UCLA Anderson School of Management and National University of Singapore, a BComm (Economics/Finance) from Macquarie University and is a Certified Practising Accountant (CPA Australia).

Julie spent the early part of her career in Traffic and Transport Planning, before moving on to roles in Operations, Project Management, Commercial Management, Risk Management and Corporate Governance. Along with her experience in her technical discipline, Julie has worked in markets including Water and Environment, Infrastructure, Defence, Built Environment, Energy and Resources.

Julie’s breadth of experience provides deep insight into complex environments across multiple geographies, coupled with her skill in client strategy, driving growth, operational efficiency and enhancing cash flow and profitability.

Julie is a keen advocate for, and driver of diversity and inclusion and a vocal supporter of mental health initiatives.

In her spare time, Julie enjoys keeping active through cycling and running, relentlessly trying to master the art of kite surfing and catching up with friends for some good food, wine and laughter.

Julie enjoys spending time with her family in Sydney and planning her next trip home to the Caribbean where she grew up and where the remainder of her family still reside.

Haley believes that “an engaged, empowered and enabled workforce which is comprised of the diversity that exists in our communities is key to a company’s success” – a business practice and belief that is aligned with Calibre’s own, 'Turning Knowledge into Value'.

With involvement at National level, Haley is also a member of an executive peer group within the Male Champions of Change Institute (MCC) – a coalition focused on gender equality and achievement of change across the public and private sectors. The MCC is committed to improving diversity, gender balance and indigenous participation in the workplace.

Haley has a passion for art, photography, and music, and enjoys spending weekends with her children exploring the cultural reaches of Brisbane.

Haley holds post graduate qualifications in leadership and organizational change with RMIT, is a member of the AHRI, and is currently studying a Masters of Business Administration at Deakin University.

In his professional and personal experience, engagement and collaboration has been central to Mark's delivery of sustainable outcomes on a continued basis.

He is passionate about positively influencing operational executives to assist in implementing safety initiatives, and strongly believes that by focussing on appropriate inputs, long term safety outcomes improve.

An extensive traveller, Mark ensures that goals are achieved and the business needs are met through a demonstrated record of implementing systems and processes across multiple industries and geographically diverse businesses.

Mark uses his valuable insight into people management whilst coaching sporting teams to a state level and continues to apply learnings in his professional life.

In his spare time, Mark is an avid follower of nearly all sports and a self-confessed “sports nuffy” – mainly watching these days. He enjoys cycling, playing golf, reading non-fiction books including biographies of high achievers, and enjoys socialising with friends who share an interest and investment in thoroughbred race horses.

Prior to joining Calibre Diona, Rhonda was General Manager, Commercial Operations for nbn where she led a team to drive commercial performance for National Field Operations, Network Engineering & Operations Divisions. In addition to her current role, Rhonda is also an Independent Director and Board Member of Paddle Queensland and Chairperson of the Asia Pacific CPO Advisory Board.

As Executive General Manager – Construction & Maintenance, Rhonda will work closely with the Board and Executive to build and grow a sustainable and diversified construction and maintenance business and drive closer alignment of Calibre and Diona, with an emphasis on delivery of renewables and geothermal services.

Prior to joining Calibre, Tara was a solicitor at Herbert Smith Freehills, where she specialised in litigation in the construction and resources industries. Tara has extensive experience across corporate and compliance matters and brings a strong commercial focus to the role.

Tara holds a Bachelor of Laws from the University of Western Australia and is admitted to practice as a Barrister and Solicitor.