Necsa Executive and Leadership Team

June, 2026

Leadership Overview

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

Driven by innovation, Necsa is dedicated to advancing nuclear energy and technology, aiming to deliver significant socio-economic impact through its diverse services and commitment to sustainable growth.

Leadership Roles at Necsa

  • Chief Executive Officer - Diana Leonardi
  • Chief Operating Officer - Alan Carolissen
  • Chief Technology Officer - Frans Windell
  • Chief Information Officer - Ayanda Myoli
  • 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 company's overall strategy and operational execution. Leonardi guides Necsa's mission to develop nuclear energy and technology, ensuring alignment with South Africa's national needs and global advancements. This leadership role involves overseeing all departments to foster innovation in nuclear operations, advanced manufacturing, research, and waste management. The Chief Executive Officer ensures that Necsa's services, targeting industrial applications, medical diagnostics, and clean energy sectors, contribute positively to socio-economic development. By championing sustainability and growth, Diana Leonardi drives the company's long-term vision and market impact.

    Alan Carolissen - Chief Operating Officer

    Alan Carolissen, the Chief Operating Officer at Necsa, manages the day-to-day operational activities and resource allocation across the organization. Carolissen oversees the effective delivery of Necsa's core services, including nuclear operations, advanced manufacturing processes, and research initiatives. This executive ensures operational efficiency and adherence to stringent safety and quality standards inherent in nuclear technology development. By optimizing workflows and managing supply chains, the Chief Operating Officer supports Necsa's objective to provide critical solutions for industrial, medical, and energy sectors. Alan Carolissen's focus remains on enhancing operational capabilities to drive Necsa's socio-economic impact and sustainable growth.
    Alan Carolissen

    Frans Windell - Chief Technology Officer

    Frans Windell, the Chief Technology Officer at Necsa, spearheads the company's technological innovation and research and development efforts. Windell guides the exploration and implementation of cutting-edge nuclear technologies, ensuring Necsa remains at the forefront of the industry. This role involves directing advancements in nuclear operations, materials science, and specialized manufacturing techniques. The Chief Technology Officer is crucial in translating research findings into practical applications for sectors like medical diagnostics and clean energy. Frans Windell's strategic vision supports Necsa's long-term growth by fostering a culture of continuous technological improvement and addressing complex nuclear-related challenges.

    Ayanda Myoli - Chief Information Officer

    Ayanda Myoli, the Chief Information Officer at Necsa, directs the company's information technology strategy and infrastructure. Myoli ensures robust and secure digital systems that support Necsa's diverse operations, from nuclear research to advanced manufacturing. This leadership position involves overseeing the implementation of IT solutions that enhance data management, operational efficiency, and communication across all departments. The Chief Information Officer plays a vital role in safeguarding sensitive information and enabling technological advancements crucial for Necsa's mission in energy and technology development. Ayanda Myoli's expertise drives the digital transformation necessary for Necsa's sustained growth and socio-economic impact.
    Ayanda Myoli

    Jeanette Pienaar - Chief Administrative Officer

    Jeanette Pienaar, the Chief Administrative Officer at Necsa, oversees the essential administrative functions that support the company's strategic objectives. Pienaar manages human resources, legal affairs, and corporate governance, ensuring smooth organizational operations. This executive role is critical for maintaining compliance with regulatory standards and fostering a productive work environment conducive to innovation in nuclear technology. The Chief Administrative Officer ensures that support services are efficiently delivered, enabling Necsa's focus on nuclear operations, research, and development. Jeanette Pienaar's leadership contributes to Necsa's stability and its capacity for long-term growth and socio-economic contribution.
    Jeanette Pienaar

    Hantie Labuschagne - Typist Chief Administrative Officer

    Hantie Labuschagne, the Typist Chief Administrative Officer at Necsa, manages critical documentation and administrative support functions. Labuschagne ensures the accuracy and efficient processing of all typed materials, supporting the broader administrative operations led by the Chief Administrative Officer. This role is integral to maintaining organized records and facilitating communication within Necsa's complex structure, which spans nuclear operations, research, and technology development. The Typist Chief Administrative Officer's attention to detail supports the company's commitment to quality and compliance. Hantie Labuschagne's diligent work underpins the administrative efficiency necessary for Necsa's sustained growth and socio-economic contributions.

    Daniel Michael Moagi - Senior Executive Manager

    Daniel Michael Moagi, the Senior Executive Manager at Necsa, provides strategic oversight and management for key initiatives within the organization. Moagi supports the executive leadership team in driving Necsa's mission forward, focusing on areas critical to nuclear energy and technology development. This role involves coordinating cross-functional projects and ensuring alignment with the company's goals for research, advanced manufacturing, and waste management. The Senior Executive Manager contributes to operational effectiveness and the successful implementation of Necsa's long-term strategy. Daniel Michael Moagi's contributions are vital for enhancing Necsa's socio-economic impact and fostering sustainable growth.

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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 Frans Windell (Chief Technology 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), Frans Windell (Chief Technology 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 Technology Officer, Chief Information Officer, Chief Administrative Officer.