Technology geeks with a purpose.

Greg McCormick is a 30-year tech industry veteran having founded various companies, has been involved in turnarounds, and the C suite at the corporate level. Starting out as a network engineer, developer, and architect he has held various roles including CEO, CTO, and worked in various executive-level strategy, design, and business development roles. He is focused on financial systems for the poor and how to protect emerging markets by providing trust in the financial system. Prior to Tazama, Greg was on the Technical Governance Board for Mojaloop, a reference model for payment interoperability that can be used to overcome barriers that have slowed the spread of digital financial services.

Josh is an accomplished Program Manager and Business Intelligence professional with over a decade of experience managing multi-million-dollar portfolios across industries like banking, healthcare, telecommunications, and IT infrastructure. His cross-functional collaboration and data-driven decision-making focus on maximizing productivity, minimizing risks, and enhancing system performance. In previous roles at Endava, Bank of America, Sitehands, Carolinas Healthcare System, and Time Warner Cable, he’s managed projects such as implementing ServiceNow, developing automation tools, overseeing data center installations, and leading network migrations.

With more than 20 years’ experience in the Business Analysis field, Justus has honed his skills in problem-solving and system building in South Africa in companies such as IBM, First National Bank (FNB) and Deloitte. At FNB he designed a mainframe-based graph database for customer networks as well as a third-party fund management platform for which the project team earned an FNB Innovators first place award. While at Deloitte working on projects for the South African Reserve Bank and the Bill & Melinda Gates Foundation, Justus began design and development work on the financial crime risk management solution that became Tazama.

Michelle is a mission-driven executive with over two decades of leadership in strategic marketing, channel development, and sales across the global financial services landscape. Guided by a deep commitment to innovation with purpose, she is a champion of digital transformation—harnessing the power of hyper-automation, machine learning, and AI to create more equitable, efficient, and accessible financial systems. Throughout her career, Michelle has collaborated with leading global financial institutions to modernize operations, particularly in payments and automation.  Her work with Tazama, and the Open-Source network, exemplifies her dedication to leveraging technology as a force for good—helping organizations deliver meaningful, measurable outcomes for financial inclusion.

With a Master’s Degree in Public Administration, Michelle brings a unique cross-sector perspective that bridges the public and private spheres. Her leadership is grounded in the belief that innovation should serve both business objectives and broader societal needs. As a member of the executive team, she continues to advance strategic initiatives that not only drive growth but also create lasting, positive impact in the communities they touch.

With over 25 years in the financial services industry, Sandy specializes in delivering transformative projects and systems that drive innovation and operational excellence. Her expertise spans project and program management, business analysis, and data management. She has a proven track record of leading system implementation projects, implementing banking products, and analyzing business requirements. Career highlights include establishing a greenfield bank, implementing a credit systems architecture to ensure Basel 2 compliance and driving strategic initiatives for organizations like Deloitte and FirstRand Bank.

Michelle Corbett joins Tazama as the executive assistant. She brings over 10 years of extensive experience in the Events and Travel industries, where she successfully ran her own business in South Africa for three years. She has a deep passion for Africa as a destination, which has shaped her expertise in the region. Currently, she runs our Social Media, Administration, and Travel at Tazama.

Experienced Executive with a strong background in business development, sales, and strategic leadership across the banking, finance, insurance, and telecoms sectors
Skilled in decision-making, cross-functional collaboration, and driving growth through employee and community programs.