Gijima Executive and Leadership Team

September, 2026

Leadership Overview

Gijima has 10 executives leading key functions including strategy, operational oversight, technology architecture, financial management, and human capital development.

Focused on delivering robust IT solutions across the financial, retail, manufacturing, and mining sectors, Gijima drives digital transformation through specialized consulting and infrastructure services to ensure long-term client success.

Leadership Roles at Gijima

  • Chief Executive Officer - John Miller
  • Deputy Chief Executive Officer - Roberta Gumede
  • Founder & Chief Executive Officer - Lunga Thusi
  • Acting Group Chief Executive Officer - Maphum Nxumalo
  • Group Chief Financial Officer - Ronnie Wa-Mandalamo
  • Group Chief Financial Officer - Ronnie Mundalamo
  • Chief Operating Officer - Carel Potgieter
  • Chief Technology Officer - Christo Abrahams
  • Chief Human Resources Officer - Barbara Hlongwane
  • Chief Legal Officer - Moroke Phajane
  • John Miller - Chief Executive Officer

    John Miller, the Chief Executive Officer at Gijima, directs the overarching corporate strategy and market positioning across the South African technology landscape. Miller architects high-level business initiatives that align IT service delivery with the complex requirements of the financial services and mining sectors. By fostering strong relationships with key stakeholders and the Board, the Chief Executive Officer ensures that the organization maintains a competitive edge in a rapidly evolving digital market. John Miller prioritizes sustainable growth and operational excellence, guiding the company through large-scale enterprise engagements. This leadership role involves constant evaluation of market trends to refine service offerings. Through rigorous oversight of corporate governance and strategic planning, the Chief Executive Officer secures the long-term viability of the firm. Miller maintains a focus on delivering value-driven solutions that empower clients to optimize their internal processes and achieve significant technological advancements within their respective industries.

    Roberta Gumede - Deputy Chief Executive Officer

    Roberta Gumede, the Deputy Chief Executive Officer at Gijima, supports the execution of strategic business objectives while managing cross-functional internal operations. Gumede coordinates the integration of IT solutions across retail and manufacturing verticals, ensuring that service delivery remains consistent with corporate standards. The Deputy Chief Executive Officer monitors performance metrics to drive efficiency and improve client satisfaction levels. Roberta Gumede collaborates with the executive team to implement organizational changes that facilitate growth and scalability. By streamlining internal workflows, the Deputy Chief Executive Officer enhances the overall agility of the firm. This role requires deep engagement with operational teams to resolve bottlenecks and optimize resource allocation. Gumede maintains a focus on operational excellence, ensuring that every project aligns with the broader mission of providing high-quality technology consulting. Through proactive management and strategic alignment, the Deputy Chief Executive Officer contributes to the stability and expansion of the company's footprint.

    Lunga Thusi - Founder & Chief Executive Officer

    Lunga Thusi, the Founder & Chief Executive Officer at Gijima, provides the foundational vision and strategic direction that defines the company's market presence. Thusi drives the long-term innovation agenda, ensuring that the firm remains a leader in IT services for the mining and financial sectors. The Founder & Chief Executive Officer cultivates a culture of excellence and technical proficiency, guiding the organization through complex market shifts. Lunga Thusi engages with the Board to set ambitious growth targets and oversee the implementation of transformative business models. This leadership role involves identifying new opportunities for expansion and maintaining the core values that have sustained the business since inception. By championing technological advancement, the Founder & Chief Executive Officer ensures that the company delivers cutting-edge solutions to its diverse client base. Thusi maintains a focus on strategic partnerships and market influence, securing the firm's reputation as a premier provider of IT consulting and infrastructure services.

    Maphum Nxumalo - Acting Group Chief Executive Officer

    Maphum Nxumalo, the Acting Group Chief Executive Officer at Gijima, manages the daily operations and strategic continuity of the entire group. Nxumalo oversees the alignment of business units with the overarching corporate goals, ensuring that IT service delivery remains seamless across all sectors. The Acting Group Chief Executive Officer coordinates with department heads to maintain operational momentum and drive revenue growth. Maphum Nxumalo facilitates communication between the executive team and the Board, providing clarity on performance and strategic initiatives. This leadership role involves navigating complex organizational challenges to ensure stability and progress. By optimizing internal processes, the Acting Group Chief Executive Officer enhances the firm's ability to respond to client needs in the retail and manufacturing industries. Nxumalo maintains a focus on execution and accountability, ensuring that the company meets its commitments to stakeholders while fostering a productive work environment that supports long-term success and market competitiveness.

    Ronnie Wa-Mandalamo - Group Chief Financial Officer

    Ronnie Wa-Mandalamo, the Group Chief Financial Officer at Gijima, directs the financial planning, reporting, and capital allocation strategies for the entire organization. Wa-Mandalamo oversees the fiscal health of the company, ensuring that financial resources are effectively deployed to support growth in the retail and manufacturing industries. The Group Chief Financial Officer manages budgeting processes and financial risk assessments to maintain stability and profitability. Ronnie Wa-Mandalamo collaborates with the Board and executive leadership to provide insights into financial performance and long-term investment opportunities. This leadership role involves maintaining rigorous financial controls and ensuring compliance with regulatory standards. By optimizing the capital structure and managing cash flow, the Group Chief Financial Officer supports the firm's ability to invest in new technologies and expand its market reach. Wa-Mandalamo maintains a focus on financial transparency and strategic growth, ensuring that the company remains a financially sound and competitive entity.

    Ronnie Mundalamo - Group Chief Financial Officer

    Ronnie Mundalamo, the Group Chief Financial Officer at Gijima, manages the financial operations and accounting functions that underpin the company's service delivery. Mundalamo directs the financial analysis and reporting processes, ensuring that the firm maintains accurate records and meets all fiscal obligations. The Group Chief Financial Officer monitors revenue streams and cost structures to improve profitability across the financial services and mining sectors. Ronnie Mundalamo collaborates with the executive team to develop financial models that support strategic decision-making and resource allocation. This leadership role involves overseeing audits and ensuring that financial practices align with corporate governance requirements. By implementing robust financial systems, the Group Chief Financial Officer enhances the firm's operational efficiency and fiscal accountability. Mundalamo maintains a focus on financial performance, ensuring that the company has the necessary resources to pursue its growth objectives and deliver high-quality IT solutions to its diverse client base.

    Carel Potgieter - Chief Operating Officer

    Carel Potgieter, the Chief Operating Officer at Gijima, manages the day-to-day operational functions and service delivery processes across the organization. Potgieter directs the implementation of operational frameworks that support the retail and manufacturing sectors, ensuring that projects are delivered on time and within budget. The Chief Operating Officer optimizes internal workflows to increase productivity and reduce operational costs. Carel Potgieter collaborates with the executive team to align operational capacity with market demand, facilitating smooth service execution. This leadership role involves monitoring performance indicators and implementing corrective measures to maintain high service quality. By streamlining logistics and resource management, the Chief Operating Officer enhances the firm's ability to scale operations effectively. Potgieter maintains a focus on operational efficiency, ensuring that the company's internal processes support the delivery of high-value IT solutions while maintaining a competitive edge in the South African market.

    Christo Abrahams - Chief Technology Officer

    Christo Abrahams, the Chief Technology Officer at Gijima, architects the technical roadmap and infrastructure strategy that powers the company's IT service offerings. Abrahams directs the development of scalable cloud and digital solutions tailored to the specific needs of the financial and mining industries. The Chief Technology Officer evaluates emerging technologies to ensure the firm remains at the forefront of innovation. Christo Abrahams collaborates with other C-suite leaders to integrate technical capabilities into the broader business strategy, driving efficiency and performance. This leadership role involves managing technical teams and overseeing the deployment of complex systems that support client operations. By prioritizing security and reliability, the Chief Technology Officer ensures that all technological implementations meet rigorous industry standards. Abrahams maintains a focus on technical excellence, guiding the organization through the complexities of digital transformation and ensuring that the company's infrastructure remains robust, secure, and capable of supporting future growth.

    Barbara Hlongwane - Chief Human Resources Officer

    Barbara Hlongwane, the Chief Human Resources Officer at Gijima, directs the talent acquisition, development, and retention strategies that sustain the company's workforce. Hlongwane architects programs that foster a culture of innovation and technical excellence, ensuring that the firm attracts top-tier talent in the IT consulting space. The Chief Human Resources Officer oversees performance management and employee engagement initiatives to align individual contributions with corporate objectives. Barbara Hlongwane collaborates with the executive team to build a diverse and inclusive workplace that supports the company's mission. This leadership role involves managing organizational change and ensuring that human capital strategies support the firm's growth in the financial and mining sectors. By prioritizing professional development and leadership training, the Chief Human Resources Officer ensures that the organization maintains a skilled and motivated workforce capable of delivering high-quality services to clients across the region.
    Barbara Hlongwane
    Moroke Phajane, the Chief Legal Officer at Gijima, directs the legal strategy and compliance framework that governs the company's operations. Phajane manages contractual obligations, intellectual property protection, and regulatory adherence across the financial, retail, and mining industries. The Chief Legal Officer provides guidance on risk management and legal matters to the executive team, ensuring that all business activities align with legal standards. Moroke Phajane oversees the resolution of legal disputes and manages relationships with external counsel to protect the firm's interests. This leadership role involves drafting and negotiating complex agreements that support the company's service delivery and strategic partnerships. By ensuring that the organization operates within a secure legal environment, the Chief Legal Officer facilitates smooth business operations and mitigates potential liabilities. Phajane maintains a focus on legal integrity and risk mitigation, ensuring that the company remains compliant and protected as it pursues its growth and innovation objectives.

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    Frequently Asked Questions Regarding Gijima Top Executives and Leadership Team

    Who leads Gijima?
    Gijima is led by John Miller (Chief Executive Officer), along with executives such as Roberta Gumede (Deputy Chief Executive Officer) and Lunga Thusi (Founder & Chief Executive Officer).
    Who is part of Gijima’s executive team?
    The executive team of Gijima includes leaders such as John Miller (Chief Executive Officer), Roberta Gumede (Deputy Chief Executive Officer), Lunga Thusi (Founder & Chief Executive Officer) and other senior executives.
    How many executives does Gijima have?
    Gijima has 10 executives leading key business areas.
    What roles are included in Gijima’s leadership team?
    The leadership team of Gijima includes roles such as Chief Executive Officer, Deputy Chief Executive Officer, Founder & Chief Executive Officer, Acting Group Chief Executive Officer, Group Chief Financial Officer.