Meet the Josters


We bring a tailored, practical and balanced approach to our work with you. The power of JOST rests in our respective specialities in change and organisational psychology, underpinned by a commercial knowledge and pure business acumen.
This sets us apart.
Stella Voules MAPS GAICD
Director & Co-CEO
A psychologist, public speaker, published thought leader and senior HR professional with extensive management, board and consulting experience, Stella is as adaptable as they come.

Strategic thinking, creativity and strong execution has seen her excel across industries in both the private and public sector, with a broad and multipronged skill set playing a leading role.

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Expect a keen analytical eye, sound judgment, a down-to-earth perspective with a balanced world-view. Pragmatic and robust solutions are Stella’s specialty.

A passion for learning and a love for coaching others elegantly compliments her business acumen, because as she always says, life’s too short to not enjoy a good coffee with someone you can learn from.

Jo Billing GAICD
Director & Co-CEO
A veteran and pioneer of organisational change as we know it today, Jo has worked in the change management industry for almost 20 years across a vast span of industries, countries and cultures.

With a genuine love and curiosity for understanding and motivating people, she has developed and delivered a multitude of methodologies and leadership development courses throughout her esteemed career.

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Whether it be for management consultancies, multinationals or independent contracting, Jo has consistently established innovative ways to increase client engagement and unleash the true potential of their leaders.

Her nurturing and optimistic attitude fuels a genuine love and curiosity for people. That’s why our clients always feel so safe in her caring and capable hands.

& Co. – The Team

Our network, collaborators and partners are our secret sauce. A handpicked, expert team for each assignment. Here’s a taste of talent to grace our work, current and past.
Dr Josephine Palermo
Organisation Development &
Change Guru
Transformation in organisations and communities is Josephine’s passion. She has vast experience in leadership and organisational change, having delivered millions of dollars of productivity gains across public and private sectors, and significant increases in employee engagement and customer satisfaction.
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Skilled in re-designing jobs and organisations, and executing on change required to align mindsets and behaviours, recent achievements include the phased implementation of agile at scale for Telstra across various teams, and job re-design for Orica Manufacturing. Having worked in Higher Education quality assurance at a national level, and consulted for various government departments, she is also aware of the driving forces and challenges within statutory authorities.

With a PhD in Organisational Psychology and numerous publications in areas of organisational development, change, coaching and leadership, Josephine uses an informed, energetic and hands on approach to create lasting change in people, processes, and total systems. Her deep knowledge and ability to quickly assess the root cause of issues is coupled with expert facilitation and stakeholder management, which makes working with Josephine both inspiring and effortless.

Adam Kreuzer
OD & Capability Consultant
Adam is a Human Resources Consultant and Registered Counsellor who has extensive experience in HR, OD and L&D roles across a range of organisations and industries, ranging from ASX-listed organisations to high-growth start ups and mid-size companies.
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With proven experience ranging from HR strategy development to implementation, Adam’s focus has been on understanding and enhancing workforce capability to drive an engaged and high-performing workforce. Adam has worked across a broad range of industry sectors and considers himself to be a proactive leader skilled in transforming teams, delivering sustainable results, and coordinating people initiatives and programs.
Elena Wallis
Learning, Development and
Improvement Consultant
Lena is an organisational Learning and Development leader who believes learning is the crucial function of the modern organisation – helping its people to always learn, have a curious mindset and be adaptive.
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Passionate about fostering continuous learning in others, so their skills keep pace with the changing world of work. Consulting is in her veins after 20 years in the business, Lena brings experience across various areas of the learning function including strategy development, program design, program development and delivery, learning curation, learning measurement, facilitation, instructional design and needs analysis.
Jennifer Dew
Improvement Expert, Process Analyst and Gun Consultant
A black-belt Six Sigma expert, with years of consulting experience under her belt from Corporate Social Responsibility to process improvement to strategy reviews.
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Jenn’s highly engaging and competent approach has a significant impact on any project she is involved in.
Kate Woodley
Psychologist, Researcher and Coach
Kate has delivered people-focused solutions in a number of environments; recruitment and selection, talent identification and development, and leadership development.
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She has worked both in APAC and Australia, leading teams and delivering talent and leadership solutions for global and regional clients.

In addition to being a psychologist, Kate has completed a Masters degree in Applied Positive Psychology and Coaching Psychology, when her research looked at the impact and potential disrupt of AI on workforces and where positive psychology might mitigate the greater challenges this may bring. She is particularly interested in how coaching can deliver superior outcomes when it uses interventions that have a strong evidence base.

Kate currently lives in Melbourne, where she continues to work as a psychologist, delivering solutions to organisations, and to individuals who wish to engage in coaching in order to develop themselves as leaders.

Linda Marin
Change Management and Communications Whizz

Linda believes in working smarter not harder. She has 20 years experience in helping organisation not only manage change but thrive because of it.
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Linda is one of only 150 worldwide Prosci® Certified Advanced Instructors.
She helps clients achieve project outcomes by implementing smart change initiatives that achieve measurable outcomes. Linda takes a holistic approach that includes learning and development, social change, stakeholder engagement and change management.

Melissa Troy
Principal Consultant

Melissa has extensive sales and service leadership experience gained with over 25 years in a variety of industries including, health, finance, fitness, FMCG, logistics, hospitality, telecommunications, human resource consulting.
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She is highly motivated and passionate about making a difference and delivering solutions and insights to achieve outstanding customer service that improves the overall ‘people experience’– of employees and internal stakeholders as well as customers, consumers and patients.

Melissa has worked in government and private sector roles including management of large diverse teams, major change and continuous improvement projects as well as consulting in the areas of organisational and leadership effectiveness.

Nicole Saines
HR and Transformational Change Instructor
Nicole believes in creating environments that inspire people and businesses to perform at their best.
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She has a special ability to help organisations thrive in challenging situations by identifying opportunities for talent development, performance management, employee relations, coaching, facilitation and change management. Nicole is pragmatic, with strong business acumen and prides herself on building effective partnerships with senior stakeholders.
Ellie Hedger
Organisational Design and
Change Guru
Ellie has over 20 year’s experience working on a wide variety of change management initiatives including policy and regulatory, systems implementation and operating model and organisation design changes.
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She loves understanding different working environments and challenges and has worked with a wide variety of organisations including several years in Singapore working as a Global Change and Organisation Design Manager at BHP Billiton. Starting her career as a Change Management Consultant with Accenture set the groundwork for a structured and methodology driven approach to change that she balances with her experience to modify and adapt as required.
Sharon Elliott
All rounder P&C Consultant
Sharon has extensive experience working in HR and recruitment roles with blue chip organisations, and an in-depth knowledge of HR processes and procedures and a proven track record of providing support to senior managers.
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Her experience includes the Development and revision of HR policy and procedure documents and templates including position descriptions, employment contracts and new starter induction manuals; End-to-end recruitment from initial job analysis to onboarding; Development of staff training guides and materials; Experience in supporting organisational change processes and restructures; Knowledge and experience of employment law frameworks.

The Collaborative Partners

The strength of our collaborative network means we partner with talented experts in a range of specialties:
Amber Brodecky
Managing Director, Comme Consulting
A specialist crisis and issues manager, Amber Brodecky is known as a trusted advisor and reputation manager.
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With more than 15 years public sector experience, a broad working knowledge of the private sector and inter-organisational relationships; Amber’s experience spans the emergency management, regulation, infrastructure, health and environment sectors.

Amber held a key leadership role for the State of Victoria during Australia’s largest emergency, Black Saturday, for which she was awarded a National Emergency Medal by the Prime Minister.

She has a record of achievement in delivering integrated strategies and plans targeted at complex stakeholder and public issues, and led Australia’s first successful negotiations for all commercial radio stations to become emergency broadcasters.

Amber has assumed key roles on a wide range of independent government inquiries, and has held central and senior roles in response to a broad range of high profile events and emergencies.

She has worked across local, State and Federal governments, in multi-jurisdictional and national environments, closely with political offices and extensively with media.

Amber is a strong advocate for the importance of active and empowered communities and has engaged directly with hundreds of regional and metropolitan community members in emotive, robust and complex situations.

A leader and senior manager of large teams, Amber has an extensive network of successful relationships at the most senior levels.

Sandy Hutchison
CEO, Career Money Life
Founder and Director of “Career Money Life”, Sandy is a true believer of empowering staff in a new world of work.
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She’s passionate about people, women and diversity, and has over 25 years’ experience in the corporate world – having managed HR and employee initiatives across Australia and the Asia Pacific. Sandy works with us to share her insights and connect us in with her extensive network.
Kate Pacalt-Shady
Founder, Marketing in Focus
Kate’s professional energy and attitude, high organisational skills, logical and lateral thinking, and warm and collaborative approach, is what separates Kate from others and recommends her as an extremely effective and valuable partner for your business.
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Kate hits the ground running. She has the ability to digest the brief and get your organisation where it needs to go, efficiently. Kate grasps key business drivers and understands complex interactions which drive superior marketing performance. There are no cutting corners with Kate, her strategic work is highly focused, effective and thorough.

Kate has a reputation for being a strategic trouble shooter. She possesses experience across a variety of cross industry marketing disciplines, her expertise being in concept realisation, streamlining, strategic business development and market growth. Utilising various methods Kate will get rid of the grey, provide clarity on marketing and business priorities, identify emerging markets for sustainability and market growth, pinpoint any financial and operational impediments, and develop and implement effective marketing solutions. Kate will make your business thrive.


Even co-CEOs sometimes get stuck. We’ve backed ourselves up with a strategic advisory committee who keep the wheels turning and the pistons firing:
Dr Prasuna Reddy
With an inspiring background, and some seriously impressive accreditations to match, Prasuna is more than qualified to keep us on the right track.
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She is a Visiting Professor in the Institute of Psychiatry, Psychology and Neuroscience at King’s College London; and Director of Australian Health Resources, an applied health and organisational development consultancy.

Prasuna recently completed the Women’s Leadership Program at Oxford University, the Corporate Director program at the Australian Institute of Company Directors, and an 8-month sabbatical in the Centre for Implementation Science, King’s College London.

She has an exceptionally strong history of executive leadership in both academic and health services organisational settings. Her previous and current roles as Executive Director of university research centres, non-executive director board positions, and senior leadership positions have strengthened her skills and experience in people management, strategy, policy, stakeholder engagement, financial management and organisational development. These include Director of Organisational Psychology professional programs at University of Melbourne, Clinical Professor at Deakin University School of Medicine, Professor and Director of Research at Flinders University Faculty of Medicine and Public Health, Professor and Director of a rural research centre at University of Newcastle Faculty of Medicine.

Antoney Wilkinson
Antoney Wilkinson is an experienced global executive and senior level counselor with experience across broad based communications, culture, operational and organisational change and transformation spanning global regions, the public and private sectors.
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For the last 18 years he has led multi-disciplined teams and complex agendas for one of the worlds most admired companies, respected brands and great places to work.

With superior capability across every communications discipline he is an innovator who has developed successful strategies, plans and narratives, delivered executions, instituted measurement and built tools, processes and entire systems in support of local, regional, divisional and global business plans, acquisitions, transformations, culture and change.

His passion lies at the intersection of internal communications, culture and change where he is able to use his significant experience and know-how in bringing these key ingredients together to support an organisations brand, reputation and overall business agenda. He does this by building valuable and sustainable communications and culture systems that deliver high ROI.

Growing and optimising engaged, accountable and resilient cultures is a specialty for him that has been tried and tested in Profit Improvements, Voluntary Buyouts, Organisational Change, Acquisitions and Integrations and major Issues and Crisis situations.

He is firm believer in workplace to marketplace and that you have to win internally to succeed externally.


Mithran Doraisamy
Previous Advisor
Amy Poynton
Previous Advisor


Then there’s stuff we’re just not experts in. Or even that good at….
For these things, these gun teams step in for us:
Red Crayon
Our super slick design crew
Bell Creative
Strategic Creative