Necsa Executive and Leadership Team

July, 2026

Leadership Overview

Necsa has 7 executives leading key functions including strategy, technology, information systems, operations, 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 in nuclear operations, advanced manufacturing, research, and waste management.

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 - Petra Grundling
  • 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, fostering innovation in nuclear operations, advanced manufacturing, research, and waste management services. Leonardi's focus remains on driving sustainable growth and maximizing the socio-economic impact of Necsa's offerings across industrial, medical, and clean energy sectors. By championing Necsa's long-term vision, Diana Leonardi ensures the company remains at the forefront of nuclear science and technology, addressing critical energy challenges and opportunities.

    Alan Carolissen - Chief Operating Officer

    Alan Carolissen, the Chief Operating Officer at Necsa, manages the day-to-day operational execution across the company's diverse service portfolio. Carolissen ensures the seamless delivery of nuclear operations, advanced manufacturing, research and innovation, and waste management services, directly supporting Necsa's mission. This role involves optimizing processes to enhance efficiency, safety, and quality across all functional areas, from industrial applications to medical diagnostics. Alan Carolissen's leadership is vital for driving Necsa's commitment to sustainability and growth, ensuring operational excellence aligns with the company's strategic objectives. By overseeing resource allocation and operational workflows, Carolissen plays a key part in Necsa's ability to meet South Africa's nuclear-related needs and achieve its socio-economic impact goals.
    Alan Carolissen

    Frans Windell - Chief Technology Officer

    Frans Windell, the Chief Technology Officer at Necsa, architects the company's technological roadmap and innovation pipeline. Windell spearheads advancements in nuclear energy and technology development, ensuring Necsa's services in nuclear operations, advanced manufacturing, and research remain cutting-edge. This executive drives the integration of new technologies to enhance efficiency and expand the scope of Necsa's offerings, particularly in areas like medical diagnostics and clean energy solutions. Windell's strategic direction supports the company's commitment to sustainability and growth, addressing complex nuclear-related challenges. Through rigorous research and development, Frans Windell ensures Necsa maintains its position as a leader in nuclear science and technology, contributing to South Africa's energy security and industrial capabilities.

    Ayanda Myoli - Chief Information Officer

    Ayanda Myoli, the Chief Information Officer at Necsa, oversees the company's information technology infrastructure and digital transformation initiatives. Myoli ensures robust and secure IT systems support Necsa's diverse operations, including nuclear operations, advanced manufacturing, and research and innovation. This leadership position involves developing and implementing strategies for data management, cybersecurity, and technological integration across all sectors served, from industrial applications to medical diagnostics. Ayanda Myoli's efforts are crucial for enhancing operational efficiency and enabling Necsa's long-term strategy for sustainability and growth. By optimizing information flow and leveraging digital tools, Myoli supports Necsa's commitment to addressing South Africa's nuclear-related needs and driving socio-economic impact through technology.
    Ayanda Myoli

    Petra Grundling - Chief Administrative Officer

    Petra Grundling, the Chief Administrative Officer at Necsa, directs the comprehensive administrative functions that support the company's strategic objectives. Grundling oversees human resources, legal affairs, and corporate governance, ensuring Necsa operates efficiently and ethically. This executive role is critical for maintaining the organizational framework that enables Necsa's work in nuclear energy and technology development, including nuclear operations, advanced manufacturing, and research. Petra Grundling's focus on administrative excellence supports the company's long-term strategy for sustainability and growth, ensuring all departments function cohesively. By managing essential support services, Grundling contributes significantly to Necsa's capacity to deliver impactful solutions across various sectors and address national nuclear-related needs.

    Hantie Labuschagne - Typist Chief Administrative Officer

    Hantie Labuschagne, the Typist Chief Administrative Officer at Necsa, provides essential administrative support, focusing on documentation and record-keeping critical to the company's operations. Labuschagne ensures the accurate and efficient management of correspondence and official documents related to nuclear operations, advanced manufacturing, and research initiatives. This role directly supports the administrative functions overseen by the Chief Administrative Officer, contributing to the smooth functioning of Necsa's various departments. Hantie Labuschagne's meticulous attention to detail is vital for maintaining organizational integrity and supporting Necsa's long-term strategy for sustainability and growth. By managing key documentation processes, Labuschagne aids Necsa in its mission to advance nuclear technology and deliver socio-economic impact.

    Daniel Michael Moagi - Senior Executive Manager

    Daniel Michael Moagi, the Senior Executive Manager at Necsa, plays a pivotal role in overseeing specific strategic initiatives and operational segments. Moagi contributes to the execution of Necsa's mission in nuclear energy and technology development, ensuring progress in areas such as advanced manufacturing and research. This management position involves coordinating cross-functional teams and driving projects that align with the company's long-term strategy for sustainability and growth. Daniel Michael Moagi's leadership ensures that key operational objectives are met, supporting Necsa's commitment to delivering impactful solutions in industrial applications, medical diagnostics, and clean energy. By managing critical projects, Moagi enhances Necsa's capacity to address South Africa's nuclear-related needs and achieve its socio-economic goals.

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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.