Necsa Executive and Leadership Team

August, 2026

Leadership Overview

Necsa has 7 executives leading key functions including strategy, information technology, technology development, operations, administration, management, and administrative support.

Committed to advancing nuclear energy solutions, Necsa drives socio-economic progress through sustainable innovation and specialized research for industrial and medical sectors.

Leadership Roles at Necsa

  • Chief Executive Officer - Diana Leonardi
  • Chief Operating Officer - Alan Carolissen
  • Chief Information Officer - Ayanda Myoli
  • Chief Technology Officer - Frans Windell
  • Chief Administrative Officer - Jeanette Pienaar
  • Typist Chief Administrative Officer - Hantie Labuschagne
  • Senior Executive Manager - Daniel Michael Moagi
  • Diana Leonardi - Chief Executive Officer

    Diana Leonardi, the Chief Executive Officer at Necsa, directs the overarching strategic vision for nuclear energy and technology development. Leonardi manages the alignment of corporate objectives with the national mandate of South Africa, ensuring that nuclear operations remain sustainable and impactful. By overseeing the integration of research and innovation, the Chief Executive Officer fosters growth across industrial applications and medical diagnostics. This leadership role involves constant engagement with the Board to secure long-term viability for the organization. Diana Leonardi maintains a focus on clean energy initiatives, driving the company toward greater market influence. Through rigorous oversight of all departments, the Chief Executive Officer ensures that the organization meets the complex nuclear-related needs of the region. Ultimately, Leonardi secures the operational integrity of the company while expanding the reach of nuclear technology into new sectors.

    Alan Carolissen - Chief Operating Officer

    Alan Carolissen, the Chief Operating Officer at Necsa, executes the daily operational strategy for nuclear facilities and manufacturing plants. Carolissen oversees the logistics of waste management and the maintenance of critical infrastructure to ensure seamless service delivery. By driving operational efficiency, the Chief Operating Officer minimizes downtime and maximizes the output of nuclear-related services. This role involves managing the workforce and ensuring that all safety protocols align with national regulations. Alan Carolissen coordinates with the executive team to streamline supply chains and optimize resource allocation across all business units. Through the implementation of lean management practices, the Chief Operating Officer supports the company's growth objectives. Ultimately, Carolissen maintains the stability of the organization's core operations, ensuring that the company consistently meets the demands of industrial and medical clients.
    Alan Carolissen

    Ayanda Myoli - Chief Information Officer

    Ayanda Myoli, the Chief Information Officer at Necsa, architects the digital infrastructure necessary for secure nuclear operations and data management. Myoli oversees the implementation of advanced information systems that support research and innovation across the organization. By driving digital transformation, the Chief Information Officer ensures that data-driven insights inform critical decision-making processes. This role involves protecting sensitive technological assets while maintaining high standards of cybersecurity across all regional operations. Ayanda Myoli coordinates with other C-suite leaders to integrate information technology into the broader business model, facilitating efficiency in advanced manufacturing and waste management. Through the deployment of scalable software solutions, the Chief Information Officer optimizes internal workflows. Ultimately, Myoli provides the technological foundation required for the company to maintain its competitive edge in the nuclear energy sector.
    Ayanda Myoli

    Frans Windell - Chief Technology Officer

    Frans Windell, the Chief Technology Officer at Necsa, directs the research and development pipeline for nuclear technology and advanced manufacturing. Windell oversees the technical teams responsible for creating innovative solutions in medical diagnostics and clean energy. By managing the lifecycle of complex projects, the Chief Technology Officer ensures that all scientific outputs meet rigorous safety and quality standards. This leadership role involves collaborating with external research partners to push the boundaries of nuclear science. Frans Windell drives the adoption of new technologies that enhance the efficiency of waste management and industrial applications. Through the continuous evaluation of technical capabilities, the Chief Technology Officer maintains the company's position at the forefront of the energy industry. Ultimately, Windell secures the technological future of the organization by fostering a culture of scientific excellence and operational precision.

    Jeanette Pienaar - Chief Administrative Officer

    Jeanette Pienaar, the Chief Administrative Officer at Necsa, directs the internal governance and administrative frameworks that support the company's mission. Pienaar oversees human resources, legal compliance, and corporate policy development to ensure organizational health. By managing the administrative infrastructure, the Chief Administrative Officer facilitates smooth collaboration between departments and external stakeholders. This leadership role involves aligning corporate culture with the strategic goals of the organization. Jeanette Pienaar drives initiatives that improve internal communication and operational transparency. Through the oversight of administrative budgets and resource planning, the Chief Administrative Officer ensures that the company remains agile and responsive to market changes. Ultimately, Pienaar secures the foundational stability of the organization, allowing other leaders to focus on technical and operational growth within the nuclear energy sector.
    Jeanette Pienaar

    Hantie Labuschagne - Typist Chief Administrative Officer

    Hantie Labuschagne, the Typist Chief Administrative Officer at Necsa, directs the documentation and administrative support systems that underpin the company's operational efficiency. Labuschagne oversees the accurate recording of corporate communications and the maintenance of essential records for nuclear operations. By managing the flow of information, the Typist Chief Administrative Officer ensures that all administrative processes remain compliant with internal standards. This role involves providing critical support to the executive team, facilitating the preparation of reports and strategic documents. Hantie Labuschagne drives the organization of administrative workflows to improve the speed and accuracy of internal tasks. Through the meticulous handling of corporate data, the Typist Chief Administrative Officer supports the broader administrative functions of the company. Ultimately, Labuschagne secures the integrity of the organization's documentation, enabling effective communication and record-keeping across all departments.

    Daniel Michael Moagi - Senior Executive Manager

    Daniel Michael Moagi, the Senior Executive Manager at Necsa, directs high-level project management and cross-functional initiatives that support the company's strategic objectives. Moagi oversees the execution of complex programs related to nuclear energy and technology development. By managing stakeholder relationships, the Senior Executive Manager ensures that project outcomes align with the socio-economic goals of the organization. This role involves bridging the gap between technical teams and executive leadership to facilitate efficient decision-making. Daniel Michael Moagi drives the implementation of performance metrics that track the success of research and innovation projects. Through the coordination of diverse teams, the Senior Executive Manager optimizes the delivery of services to industrial and medical clients. Ultimately, Moagi supports the company's long-term sustainability by ensuring that all management activities contribute to the overall growth and stability of the business.

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    Frequently Asked Questions Regarding Necsa Top Executives and Leadership Team

    Who leads Necsa?
    Necsa is led by Diana Leonardi (Chief Executive Officer), along with executives such as Alan Carolissen (Chief Operating Officer) and Ayanda Myoli (Chief Information Officer).
    Who is part of Necsa’s executive team?
    The executive team of Necsa includes leaders such as Diana Leonardi (Chief Executive Officer), Alan Carolissen (Chief Operating Officer), Ayanda Myoli (Chief Information Officer) and other senior executives.
    How many executives does Necsa have?
    Necsa has 7 executives leading key business areas.
    What roles are included in Necsa’s leadership team?
    The leadership team of Necsa includes roles such as Chief Executive Officer, Chief Operating Officer, Chief Information Officer, Chief Technology Officer, Chief Administrative Officer.