About UsGlobal Leadership

Sally Vicaria

After leading OIUK's Programme's for 8 years, Sally is now Executive Director of Opportunity International Inc. Sally facilitates collaboration between key global offices and supports the leadership team of Opportunity International to continually improve our ability to serve clients and impact lives, both today and into the future. 

Mary Oakes

I bring over 20 years’ experience in the charity sector, specialising in fundraising for international development. I began my career at Tearfund, helping to establish what is now a global major donor programme, and I’ve since led fundraising teams at Church Mission Society, World Vision UK, Habitat for Humanity, and Innovista International. My work has taken me across Sub-Saharan Africa, Eastern Europe and the Middle East, raising resources for Christian mission as well as both humanitarian and development work. I have also been a board member for Embrace the Middle East for the last seven years. I joined Opportunity International UK in 2023 as Deputy CEO and became CEO in February 2025. Based in north Oxfordshire, I enjoy the outdoor life with my husband Michael, Springer Spaniel Poppy, and ex-racehorse Moo.

Atul Tandon

Atul Tandon, an Indian American, comes to Opportunity with a background marked by building, scaling and turning around some of the world’s best-known for profit and nonprofit enterprises. Over a 35-year career, his work has impacted financial services and consumer banking, the social sector, nonprofit management and governance, the digital economy and marketing.

Prior to joining Opportunity International, Atul founded and served as CEO of the Tandon Institute, which provides strategy, solutions and staffing to enable social sector enterprises to rapidly accelerate their impact, revenues, public engagement and organisational capacity.  Before that he served as the leader of United Way Worldwide’s 41-country International Network, and worked as Senior Vice President of Donor Engagement for World Vision United States. 

Atul is a board member for several organisations, including the Christian Leadership Alliance, the largest association of faith-based organisations and churches in the U.S, and Mission Aviation Fellowship, the largest provider of rural and remote access air services to international NGOs. 

Nana Francois

Nana joined Opportunity International UK 2022 and is now the CEO of Opportunity Microfinance Investments Ltd. She joined from FaithInvest where as Director of Investment Solutions she led a team helping faith-based organisations put their money where their values are. Prior to this she worked in the corporate financial services sector for almost twenty years, holding a number of positions with Gartmore, with J.P. Morgan and with Barclays in South Africa.

Alongside her Barclays role in South Africa, Nana was heavily involved in church programmes that sought to make projects more sustainable, and in funding and supporting female entrepreneurs in Ghana.  Through this work she saw first-hand the impact that enterprise support, education, agriculture and financial access can have in uplifting individuals and a whole community.

Nana has also held a number of governance roles - as a vice chair on the Board of the Finance Innovation Lab, with a mission to drive financial services access and justice in the UK, and as a Non Executive Director at the Impact Investing Institute supporting Impact Investing in the UK and Africa.

Anke Luckja

Anke Luckja was appointed CEO of Opportunity International Germany in February 2019. Anke joined Opportunity as Program Manager in 2006, transitioned to Program Director in 2010, and became Vice President of Opportunity International Germany in 2015. 

During her time at Opportunity Anke has secured and increased funding from the German Government and EuropeAid, and has quadrupled the income from German and Swiss trusts and foundations. She holds a Master of Arts in Romance Studies, Business Administration and Education, a Certificate of Advanced Studies in Development and Cooperation (CAS) from the ETH in Zurich, Switzerland, and graduated from the Frankfurt School of Finance and Management as a Certified Microfinance Expert in 2015. 

Dan Murray

Scott Walters

Scott Walterswas appointed Chief Executive Officer of Opportunity International Australia in July 2021. Having enjoyed a long and diverse career in the not-for-profit sector, including educational support for disadvantaged children, poverty relief, women’s health, and early childhood intervention, Scott has led and managed the strategic development and growth in fundraising for a number of charities.

Scott was most recently the Chief Fundraising Officer for Bible Society Australia, and previously, he was Head of Strategic Partnerships for The Smith Family. With an extensive background in financial planning, stockbroking and marketing before his move to the for-purpose sector, Scott brings the depth of business and fundraising experience needed for the role, as well as a passion for alleviating poverty.

Andrew McCusker

Andrew McCusker is Opportunity International's Head of Education Finance, overseeing Opportunity’s work developing customised financial tools and programmes to improve the accessibility, quality, and sustainability of education around the world. Originally from Australia, he holds a bachelor’s degree in commerce from the University of Melbourne and is a Chartered Financial Analyst. He currently lives in London. 

Prior to joining Opportunity, Andrew served as a Global Financial Planning Analyst for Bridge International Academies, working with over 500 low-cost schools across Africa and Asia. Splitting time between London and Nairobi, Kenya, he worked with both investors and education providers, helping to conduct financial impact analyses of key business decisions for these schools and lift education standards. 

He began his career at Goldman Sachs, serving as Executive Director of Global Investment Research where he managed relationships with investors and built an international team working in a number of low-cost markets. 

Annie Wang

Annie Wang is a public health expert with experience working in over 15 low and middle income countries, focusing on innovations in improving last mile access to health care and essential medicines. Annie is passionate about developing resilient health systems through public-private partnerships and sustainable financing. Annie is currently the Head of Global Health at Opportunity International, where she oversees the integration of health programs through microfinance and inclusive finance partners in Asia, Africa and Latin America.

Previously, Annie was a Senior Public Health Consultant covering Asia-Pacific at IQVIA, the global leader in health data science, advising clients on how to leverage better data to drive evidence-based insights to address systematic challenges in health systems. She has also held roles as a Health Policy Advisor at the World Bank, Health Economist for the global infectious disease pharmaceutical portfolio at Roche Genentech, and as a management consultant at Oliver Wyman. Annie also spent 18 months in Sierra Leone at the wake of the Ebola epidemic working with the Clinton Health Access Initiative (CHAI) to support the government in procuring and distributing medical supplies.  Annie holds a Bachelors of Commerce from Queen's University, and a Masters in Public Health from Harvard University. In 2022, Annie received the Pro Bono Australia 2022 Impact 25 Award for her contributions to the social impact sector.

Timothy Strong

Timothy Strong serves as the Head of Agriculture Finance for Opportunity International. In addition to managing a diverse portfolio of agriculture finance products and services throughout Africa, he has spearheaded Opportunity’s efforts to implement and mainstream gender-inclusive services to empower women in farming. He lives with his family in Lilongwe, Malawi. 

Before joining Opportunity, Tim worked with a Silicon Valley start-up coordinating Lean and Kaizen project management, the U.S. Department of Agriculture/Agricultural Research Services, the U.S. Peace Corps, the Clinton Foundation, and several commercial farms.  He received a Bachelor in Science in biochemistry and plant physiology from the University of California at Davis, and holds a master’s degree in environmental policy and an MBA in operations management.

William Derban

Dr William Derban serves as the Global Director of Digital Financial Services for Opportunity International, defining technical standards, developing business strategy, and negotiating collaborations across mobile money, mobile/cell-phone banking, and agent banking.

William is the convener and co-founder of the Financial Inclusion Forum Africa, a network of professional passionate about promoting financial inclusion across Africa. He was formerly the Market Engagement Director for the Mobile for Humanitarian Innovation programme at the GSMA. 

Before joining the GSMA, William worked in the financial sector for over 20 years. He worked as the Director for Strategic Partnerships and digital banking for Fidelity Bank Ghana and before then as the Head of Community Investment for Barclays Bank, responsible for Africa, Asia, and the Middle East.  William also sits on several financial inclusion related boards and is a passionate speaker on development and financial inclusion. He lives in London with his wife and three children.

Calum Scott

Calum is responsible for the Social Performance Management programme across Opportunity’s global network, helping to understand the impact that we’re having on the lives of the families we serve. He has been a Board member of the Social Performance Taskforce and previously worked as an economist for the Scottish Government and the National Health Service.