Josh joined the GECA team in 2023, bringing a breadth of experience from the not-for-profit, corporate and government sectors with a track record of creating lasting impact for organisations and communities.

Having worked extensively across countries, cultures, and industries, Josh believes that inclusive and courageous collaboration is the best way to get things done. He is thrilled to be using this passion to develop partnerships within the GECA Family and beyond for the good of people and planet. Whether you’re a business, not-for-profit, community organisation or in the public sector, Josh is eager to connect with you to improve social and environmental outcomes.

Josh is proud to be leading an organisation that delivers positive environmental impact using globally-recognised best practice standards.

Mark is a highly motivated and experienced business, policy and sustainability professional with strong leadership, communications and technical skills. He has a successful 35‑year international track record of driving evidence-based sustainable innovation and circularity in the agri-food and grocery, clothing, building and construction and electronic goods industries.

Mark’s work has always been grounded in a passionate belief that sustainability standards and certification can unlock new opportunities for value creation, innovation, and sustainable product design while supporting the delivery of government policy and strategy.

With over 30 years of experience in developing, implementing and certifying sustainability standards, Mark brings a deep understanding of the role of standards and certification to GECA. He has a BSc in Environmental Science and an MSc in Environmental Management and has a background in applied economics crafted over an 11-year career in international finance. He has also been a behavioural science practitioner for almost 20 years.

Kendall is a communications specialist and sustainability advocate who has driven campaigns for a range of organisations on sustainable consumption and production, environmental philanthropy and threatened species conservation.

She has over a decade of experience working in environmental conservation and holds an Honours degree in Environmental Politics and a Fellowship with the Centre for Sustainability Leadership. Kendall is passionate about using creativity for good and isn’t averse to delivering sustainability storytelling via a haiku or cat meme.

Originally from the UK, Jacqui holds a Bachelor of Interior Architecture. Emigrating to Sydney in 2002, Jacqui has over 20 years of experience within Australia’s architecture and design industry, including sales and business development, product and brand management and team leadership.

In recent years Jacqui has combined her love of design with a passion for the environment, focusing on sustainability and social responsibility within the built environment.

In 2019 Jacqui was selected to train with former US Vice President Al Gore, attending the Climate Reality Leadership Corps in Brisbane, which provided her with a deep understanding of the latest climate change science and the importance of minimising the impact of the built environment on the planet and its resources.

As a WELL Accredited Professional (WELL AP) through the International WELL Building Institute and a Green Star Associate through the Green Building Council of Australia (GBCA), Jacqui has extensive knowledge of green building schemes and third-party product certifications and understands the importance of sustainable and ethical procurement.

As a previous GECA licensee, she has an intimate understanding of the processes and commitment required to obtain certification. Therefore Jacqui is well placed to support GECA’s new and existing licensees in achieving their sustainability goals.

Milly Colahan brings to GECA over a decade of experience in sales leadership and business development and a proven track record of driving growth and market influence.

Having worked in highly visible roles across a diverse range of industries, including manufacturing, travel, hospitality, and technology platforms, Milly has developed a unique ability to navigate complex market dynamics and foster strong partnerships. Her expertise in pivoting to sustainability aligns perfectly with GECA’s mission to enable people to make good choices regarding products and services that benefit people and planet.

At GECA, Milly will leverage her deep understanding of industry trends and stakeholder engagement to spearhead initiatives that expand the organisation’s reach, acquire new licensees and enhance brand visibility, ensuring GECA continues to set the standard in ecolabel certification and sustainability solutions. Passionate about creating meaningful industry partnerships, Milly is committed to helping GECA make a lasting impact on the journey toward a more sustainable and responsible business landscape.

Sarah has been working in the sustainability profession since 2015. She has extensive experience enabling businesses and industries to reduce single-use plastics, improve the sustainability of their operations and achieve a measurable impact that protects our blue planet.

Sarah holds a Master’s Degree in Tourism Management, where she specialised in sustainable tourism, and she is currently completing a Certificate in Sustainability. In 2014, she completed Climate Leadership training via Al Gore’s Climate Reality Project. After that, she moved to Cambodia, where her enthusiasm for reducing single-use plastics led her to create her business, Plastic Free Southeast Asia.

In Australia, Sarah has worked with Better Business Partnerships, a local council initiative on the north shore of Sydney that supports businesses on the sustainability pathway. She also volunteers on the Mosman Council Climate Action Committee and for the NSW Tourism Awards.

As the Client Engagement Officer at GECA, Sarah focuses on developing relationships with new and current licensees to help support their sustainability goals and deliver on GECA’s strategic targets.

Raven is GECA’s seasoned operations guru and thrives on making things run like a well-oiled machine.

Known for being the go-to problem solver and team motivator, she has a knack for creating efficient processes and fostering teamwork. Raven is all about bringing that same passion and drive to help organisations succeed.

Elmira is a seasoned technology entrepreneur passionate about addressing climate change and sustainability challenges. With over a decade of experience, she has developed deep expertise in product development, lifecycle assessment, and sustainability strategy.

With a PhD in Chemical and Biomolecular Engineering, she has led innovative solutions across industries like cold-chain logistics, construction, and energy-efficient materials, focusing on sourcing, manufacturing, and end-of-life strategies.

With her expertise in global sustainability standards and a drive to tackle climate challenges, Elmira is committed to working with GECA’s licensees and stakeholders to create impactful, sustainable solutions for a better future.

Iva joined GECA in 2025 as executive support for the CEO, Josh Begbie, and the senior leadership team. She brings to GECA a solid background in leadership, strategic vision and operational excellence.

She has experience in strategic project management office (PMO) leadership and process improvement and is dedicated to improving operations and simplifying complex challenges. She fosters growth and innovation by focusing on efficiency and alignment, ensuring that teams are aligned and resources are optimised for success.

[Amanda is currently on extended leave]

With a background in the interior design and architecture sector, Amanda has a decade’s experience working with both local and international design brands and products in sales and account management roles in Australia and the UK.

As the Client Engagement Officer at GECA, she focuses on developing relationships with new and current licensees to help support their sustainability goals and deliver on GECA’s strategic targets.

Amanda is a nature lover and activist. She’s passionate about the environment and the health of people and planet, with a particular interest in supporting innovative materials and sustainable design solutions.