Lloyd Cartwright

Chief Executive Officer

Lloyd is deeply committed to leadership, drawing immense satisfaction in building and growing businesses through authentic engagement, a clear strategic vision and disciplined execution.

With 30+ years of experience in the financial services sector across New Zealand, Australia, North America, Europe and Asia, he brings a wealth of diverse and unique perspectives to GDT.

Lloyd lives on an Equine property in Auckland with Emma and Gatley and far too many animals to name.

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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. Her background includes leading regional sales, customer and transformation teams within global organisations, with a strong track record in driving sustainable growth, commercial effectiveness and customer-centric operating models.

At GDT, Caroline is responsible for customer strategy, commercial growth and market engagement across the GDT platform and broader dairy ecosystem. She is focused on strengthening customer value, deepening industry participation and supporting the continued digital evolution of global dairy trading.

Passionate about building genuine connection across cultures and markets, Caroline believes strong partnerships are central to sustainable commercial success. Having lived and worked internationally throughout her career, she speaks English, French, Mandarin and Spanish, and enjoys immersing herself in new cultures and experiences.

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Justin Matijasevich 

Chief Financial Officer  

Justin has come to GDT after spending over 12 years in the dairy industry in New Zealand and the Middle East, holding various senior finance roles in manufacturing, sales and corporate finance. 

Prior to that, Justin has almost 10 years experience in financial markets and investment banking across New Zealand and Europe, including working for NZX and Euronext.liffe. This included developing debt markets at the NZX and the development, enhancement and marketing of new and existing equity derivative contracts at Euronext.liffe. 

Justin holds a Bachelor of Management Studies from the University of Waikato.

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Sajeewa Dayaratne

Chief Technology Officer

Sajeewa joined GDT with over 25 years of experience in engineering leadership and executive management. He is deeply committed to fostering technical excellence and driving innovation, with a particular focus on empowering global teams to deliver high-performance solutions.

Throughout his career, Sajeewa has held senior leadership roles across a diverse range of sectors, where he guided the scaling and modernising of complex technology platforms. His ability to blend technical depth with strategic growth has been instrumental in helping organisations navigate rapid digital evolution.

Sajeewa holds a Bachelor of Engineering and a Master of Engineering from the University of Auckland, complemented by a Diploma in Management from the New Zealand Institute of Management.

In his downtime, Sajeewa enjoys tinkering with home automation, though he’s learned that the real challenge is ensuring his wife and two children can actually use them.

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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.

At Global Dairy Trade, Wendy leads the global marketing agenda for the world’s leading dairy trading platform, overseeing brand strategy, communications, market positioning and customer engagement. Her focus is on strengthening GDT’s role as a trusted, neutral market authority and building a distinctive global brand that reflects the organisation’s growing importance within the global dairy ecosystem.

Wendy has built her career helping organisations navigate transformation, scale and reinvention by connecting strategic clarity with cultural relevance, commercial impact and long-term brand value. She has held senior marketing leadership roles globally and regionally for brands including Salesforce, Intuit, Manulife and Mindshare.

Wendy is the Founder and President of the International Advertising Association Singapore and a member of the IAA Global Board. She is also a Fellow of both The Marketing Society and The Marketing Academy.

A highly respected global industry leader, Wendy regularly contributes as a juror, chair and speaker at major international forums. She is also an award-winning published author of Between Flights and The B2B Reset: Building Brands That Get Bought.

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Yasmine Bendjafer

Chief Operating Officer

Yasmine joined GDT in 2011 and is responsible for the delivery and improvement of GDT services to customers and stakeholders across all platforms.

Having headed up the development and management of GDT’s digital products, Yasmine has excelled in leading the strategy, planning, development and implementation of all technology used within Global Dairy Trade. 

With over 15 years of experience in the international dairy industry working in North Africa, the Middle East and New Zealand, Yasmine is a valuable asset to the GDT Leadership Team. She has led the implementation of GDT’s robust and secure technology platforms, providing support to the ever-expanding bidder and seller customer base. With business operations now included as part of her portfolio, Yasmine is using her experience and knowledge of the GDT digital platforms to help deliver a more cohesive GDT experience.

Yasmine holds a Postgraduate Diploma in Business Administration, a Master of Business Administration from the University of Auckland and a Bachelor in Translation and Interpretation from the University of Algiers (Arabic/French/English). Passionate about languages, Yasmine likes to practice her Spanish and Te Reo Maori when the opportunity arises.

Contact Yasmine