Our Team

Nexii is managed by a group of experts with extensive experience and a proven track record in both the finance and development sectors. Nexii’s skilled team is also complimented by the Nexii Industry and Standards Advisory Board comprised of a group of experts who have agreed to provide Nexii with industry-specific input, advice and recommendations that complement Nexii’s work and the organisation as a whole.

Tamzin Ractliffe

CEO, NEXII

Tamzin Ractliffe is the Founder and CEO of Nexii. Widely credited with having started the first social investment exchange in the world, Tamzin was a visionary founder and leader of the GreaterCapital/GreaterGood group for 12 years from its inception in 1998. She subsequently established the Impact Exchange (iX) – the world’s first recognised investment exchange (RIE) and regulated social stock exchange board in collaboration with the Stock Exchange of Mauritius.

Qualified in Applied Psychology and Commerce, she has worked as a financial analyst as well as in private equity and venture capital in South Africa and internationally for more than 25 years. Tamzin has continually sought to use the markets for greater social good and was awarded the GIBS Social Entrepreneur of the Year Award in 2007 and appointed an Ashoka fellow in 2008.

Lucy Hoffman

Lucy Hoffman is a finance professional committed to marrying her finance background with her passion for impact. Before joining Nexii in August 2012, Lucy worked as a special projects manager at Morgan Stanley Children’s Hospital of New York-Presbyterian. In that role, she managed several hospital initiatives to improve quality and efficiency of patient care.

Lucy started her career in the Investment Banking Division at Morgan Stanley, covering the firm’s global power, utility and renewable energy clients on business development, mergers and acquisitions, IPOs, project financings, divestitures, and debt issuances. Lucy also has experience in the Corporate Responsibility space, having worked in Credit Suisse’s Global Diversity and Inclusion Group. Lucy graduated from Dartmouth College with a Bachelor of Arts in History.

Sari Miller

Sari is a serial entrepreneur and an investor in social impact companies. She has been a founding investor and partner in numerous start-ups and social ventures. One recent example is her angel investment in LeapFrog Investments, a micro-insurance fund which raised $135 million and is described as the world’s first and largest investor in companies that insure the underserved in Africa and Asia.

She was a founding investor in Switch & Data Facilities, which was acquired by Equinix in 2010 for $800+ million. She helped sell a company to AIG, Inc. in which she had been a Partner, an Executive Vice President and the Chief Financial Officer. Sari founded a publicly traded insurance company that grew to hold assets in excess of $1 billion. She served on its Board of Directors and chaired the Executive and Investment Committees. Sari received a B.A. from Barnard College, Columbia University and an M.B.A. from the Wharton School, University of Pennsylvania. She lives in New York City.

Gabrielle Habberton

Gabrielle Habberton is a specialist in the field of development practice, specifically in the areas of Organisational Development and Evaluation. She has broad-based theoretical and practical experience focused on defining stringent and relevant due diligence protocols and evaluation and monitoring systems to ensure investments met specific criteria, including the ability to deliver measurable returns. She is currently the Operations Director of Relativ Enterprise Development where she applies her core skills set to the alleviation of poverty through the development of local enterprises which have the potential to create significant social and economic change.

Kelly Notcutt

Kelly is an inquisitive writer and editor with a keen interest in current affairs and community development. She began her career in journalism working as an editor for global security specialists, red24, after graduating from Rhodes University with a Bachelor of Social Science in politics and anthropology. She has over six years experience as a youth leader, mentoring young women in her Cape Town community.