Our Senior Leadership Team

Martina Macpherson is an accomplished financial markets and sustainability expert, academic researcher, and board member, with extensive experience across strategic planning, product, operations, risk and regulatory compliance management. Martina co-founded the XpertEcosystem with Marie Lehmann after recognising the challenges companies and financial services firms face in finding the right experts for sustainability projects and consulting services in today’s economic landscape. 

With nearly 25 years of experience, Martina specialises in corporate sustainability strategy, governance, as well as product innovation. She has a proven track record of driving transformative business initiatives, scaling new ventures, and integrating ESG principles into commercial and operational frameworks for FTSE100 firms and start-ups. 

Her expertise spans regulatory compliance, risk management, sustainable investing, and the development of data, analytics, and index products. 

An award-winning author and entrepreneur, Martina has co-authored several influential sustainability and regulatory handbooks, including the "ESG in Portfolio Analysis Handbook" by RiskBooks which she co-edited with Marie Lehmann and Daniel Ung, the Corporate Reporting Research Handbook" by E. Elgar Publishing, the "AI Book" by Wiley, and the "Biodiversity Handbook" by Routledge. 

She has been recognised as a "Global Sustainability Ambassador" and as one of the "Top 50 Women in Finance." A doctoral fellow, academic researcher, and mentor, she combines visionary thinking and cutting-edge research with meticulous execution and practical applications to advance sustainability assessments, connect stakeholders across the financial ecosystem, and create impactful solutions for global challenges.  

Passionate about sustainability, Marie co-founded the XpertEcosystem with Martina Macpherson after recognising the challenges companies and financial services firms face in finding the right experts for sustainability projects and consulting services in today’s economic landscape. 

On one hand, there is a wealth of exceptionally talented professionals with deep sustainability expertise. On the other, companies are increasingly looking to outsource projects and consulting engagements. The XpertEcosystem was created to bridge this gap. 

Marie brings over two decades of extensive experience in relationship management, business development, commercial strategy, and strategic partnership management within large organisations across the global financial services and FinTech industries. She also worked as an Advisor with Accounting for Sustainability (A4S), an initiative established by His Majesty King Charles III. During her adoption leave, Marie founded a successful childcare recruitment consultancy, which was later acquired by a larger recruitment firm when she decided to return to her career in the City. 

She holds a Master in Management from Montpellier Business School, an MBA from the University of Warwick as well as a Master of Studies in Sustainability Leadership from the University of Cambridge Institute for Sustainability Leadership (CISL). 

Marie co-authored ESG Investing and Analysis – A Practitioner’s Guide alongside Martina Macpherson and Daniel Ung, Head of Quantitative Research and Analysis, ETF Portfolio Solutions EMEA & APAC at State Street Global Advisors. She also contributed to a book on biodiversity extinction with Martina and Jill Atkins, Chair in Financial Management at Sheffield University Management School. 

Marie is deeply committed to advocacy in child adoption, social impact, and climate risk.

Walter D'Onofrio is a successful Senior Advisor, Technical Expert Lead with a proven track record in leading complex, large-scale IT projects to successful completion. 

As a strategic leader, he drives innovation and efficiency within organisations, skilfully navigating the intricacies of technology and business needs. Walter excels in managing significant IT initiatives and fostering collaboration among cross-functional teams, ensuring alignment with organisational goals. 

His unwavering commitment to excellence and continuous improvement positions him as a valuable asset for any technology-driven firm aiming to enhance operational capabilities and achieve sustainable growth