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Our leadership team

     

Lloyd Cartwright

Chief Executive Officer

Lloyd is an experienced international executive with more than 30 years in financial services across New Zealand, Australia, North America, Europe and Asia. He has led organisations through growth, transformation and complex market conditions, combining strategic clarity with disciplined execution and authentic leadership.

As Chief Executive Officer, Lloyd leads GDT’s strategy and continued evolution as trusted, neutral market infrastructure for the global dairy industry. He is focused on strengthening the value GDT delivers to customers and stakeholders, extending its international relevance and positioning the organisation for sustainable long-term growth.

Throughout his career, Lloyd has built high-performing teams, strengthened customer value and successfully led businesses through significant change. His experience in financial markets, risk management and international business brings a broad commercial and global perspective to GDT’s leadership.

 
     

Caroline Brennan

Chief Customer Officer

Caroline brings more than 20 years of international commercial leadership experience across financial services, data and technology-enabled businesses in Asia Pacific and Europe. She has led regional sales, customer and transformation teams within global organisations, driving sustainable growth, commercial effectiveness and customer-centred change.

As Chief Customer Officer, Caroline leads GDT’s customer strategy, commercial growth and market engagement across the platform and wider dairy ecosystem. She is focused on strengthening customer value, deepening industry participation and supporting the continued digital evolution of global dairy trading.

Having lived and worked internationally throughout her career, Caroline brings a strong cross-cultural perspective to building enduring commercial relationships. She speaks English, French, Mandarin and Spanish and believes meaningful partnerships are central to long-term success.

 
     

Claudia Michels

Chief Operating Officer and Managing Director, Europe

Claudia brings more than 15 years of experience across business operations, business development, process optimisation, SaaS platforms and project management. Her career has been shaped by leading cross-functional initiatives, improving operational performance and developing processes that support business growth.

As Chief Operating Officer, Claudia leads GDT’s auction operations and the development of scalable, efficient and high-quality processes that support the successful delivery of GDT Events. Her focus is on operational excellence and delivering a consistent, high-quality experience across the GDT platform.

In her additional role as Managing Director, Europe, Claudia supports GDT’s growth, presence and industry engagement across the region. Her cross-functional approach and focus on continuous improvement help GDT respond to evolving customer and market needs.

 

 
     

Justin Matijasevich 

Chief Financial Officer  

Justin brings more than 20 years of experience spanning finance leadership, the dairy sector, financial markets and investment banking across New Zealand, Europe and the Middle East. His background combines strong financial expertise with an in-depth understanding of the commercial dynamics of the global dairy industry.

As Chief Financial Officer, Justin leads GDT’s financial strategy, supporting sound commercial decision-making and the organisation’s sustainable growth. He brings a rigorous financial, risk and commercial perspective to GDT’s strategic development.

Before joining GDT, Justin spent more than 12 years in senior finance roles across dairy manufacturing, sales and corporate finance. Earlier in his career, he worked with NZX and Euronext.liffe, contributing to the development of debt markets and equity derivative products.

 
     

Sajeewa Dayaratne

Chief Technology Officer

Sajeewa is a technology executive with more than 25 years of experience in engineering leadership and executive management. He has built his career developing high-performing technical teams and scaling and modernising complex technology platforms across a range of sectors.

As Chief Technology Officer, Sajeewa leads GDT’s technology strategy and the continued development of its platform. He is focused on strengthening technical excellence, enabling innovation and empowering global teams to deliver secure, resilient and high-performing solutions.

Sajeewa combines deep technical expertise with a strategic approach to growth and digital evolution. His leadership supports GDT’s ability to respond to changing market needs and deliver trusted digital infrastructure for the global dairy industry.

 
     

Wendy Walker

Chief Marketing Officer

Wendy brings more than 25 years of interdisciplinary marketing experience across global markets, spanning technology, financial services, professional services and media. She has held global and regional leadership roles with organisations including Salesforce, Intuit, Manulife and Mindshare.

As Chief Marketing Officer, Wendy leads GDT’s global marketing agenda, with responsibility for brand strategy, communications, market positioning and customer engagement. She is focused on strengthening GDT’s position as a trusted, neutral market authority and building a distinctive global brand that reflects its importance within the global dairy ecosystem.

Wendy is Founder and President of the International Advertising Association Singapore, a member of the IAA Global Board and a Fellow of both The Marketing Society and The Marketing Academy. A recognised voice in the global marketing industry, she regularly contributes as a juror, chair and speaker at international forums and is an award-winning author.