ACI Worldwide Executive and Leadership Team

October, 2026

Leadership Overview

ACI Worldwide has 6 executives leading key functions including corporate strategy, financial operations, technology development, and human capital management.

Focused on delivering secure real-time payment platforms, ACI Worldwide empowers financial institutions and merchants globally through advanced cloud-based payment technology and robust fraud prevention solutions.

Leadership Roles at ACI Worldwide

  • Group Chief Executive Officer - Evelyn Sasmito
  • President & Chief Executive Officer - Thomas Warsop
  • Visual Web Solutions Founder & Chief Executive Officer - Isaac Moscovich
  • Chief Financial Officer - Robert Leibrock
  • Chief Technology Officer - Jeffrey Kissling
  • Chief Human Resources Officer - Praveena Nathawat
  • Evelyn Sasmito - Group Chief Executive Officer

    Evelyn Sasmito, the Group Chief Executive Officer at ACI Worldwide, directs the overarching strategic vision for international market expansion. Overseeing complex payment ecosystems, the Group Chief Executive Officer ensures that regional business units maintain alignment with global product standards. This leadership role involves managing cross-border payment orchestration and optimizing digital transaction flows for diverse financial institutions. By fostering innovation within the software and technology sector, Evelyn Sasmito drives the development of scalable payment solutions that address evolving merchant requirements. The Group Chief Executive Officer maintains rigorous oversight of operational efficiency across multiple jurisdictions, ensuring that the company remains a leader in real-time payment processing. Through consistent focus on technological advancement and market penetration, Sasmito secures the long-term competitive positioning of the organization within the global financial landscape.

    Thomas Warsop - President & Chief Executive Officer

    Thomas Warsop, the President & Chief Executive Officer at ACI Worldwide, manages the primary corporate trajectory and enterprise-wide performance. Overseeing the integration of cloud-based payment technology, the President & Chief Executive Officer ensures that the company delivers high-performance solutions to banking and merchant clients. This leadership role involves coordinating with the Board to execute long-term growth initiatives and maintaining financial health across all business segments. By prioritizing innovation in fraud management and billing systems, Thomas Warsop drives the company toward sustained market leadership. The President & Chief Executive Officer monitors global operational trends to refine the product roadmap, ensuring that ACI Worldwide meets the demands of a rapidly digitizing economy. Through strategic decision-making and effective resource allocation, Warsop strengthens the core infrastructure supporting the firm's diverse client base.
    Thomas Warsop

    Isaac Moscovich - Visual Web Solutions Founder & Chief Executive Officer

    Isaac Moscovich, the Visual Web Solutions Founder & Chief Executive Officer at ACI Worldwide, directs the specialized development of digital interface technologies. Overseeing the integration of user-centric design within payment platforms, the Visual Web Solutions Founder & Chief Executive Officer ensures that merchant and consumer interactions remain seamless and secure. This leadership role involves architecting intuitive digital payment solutions that enhance the overall user experience across the company's software portfolio. By focusing on the intersection of web technology and financial processing, Isaac Moscovich drives the modernization of billing and payment orchestration tools. The Visual Web Solutions Founder & Chief Executive Officer collaborates with technical teams to implement advanced visual frameworks that support complex transaction management. Through continuous refinement of digital assets, Moscovich improves the accessibility and functionality of the firm's cloud-based offerings.

    Robert Leibrock - Chief Financial Officer

    Robert Leibrock, the Chief Financial Officer at ACI Worldwide, directs the financial planning, reporting, and capital allocation strategies. Overseeing the fiscal health of the organization, the Chief Financial Officer ensures that investments in payment technology and fraud management align with long-term profitability goals. This leadership role involves managing investor relations and maintaining transparency in financial disclosures across global operations. By analyzing market trends and operational costs, Robert Leibrock drives the company's ability to fund research and development in the software and technology sector. The Chief Financial Officer collaborates with the executive team to assess the financial impact of new product launches and international expansion efforts. Through disciplined financial management and risk assessment, Leibrock supports the stability and growth of the company's diverse payment processing business.

    Jeffrey Kissling - Chief Technology Officer

    Jeffrey Kissling, the Chief Technology Officer at ACI Worldwide, directs the engineering and technical infrastructure supporting global payment processing. Overseeing the development of real-time payment platforms, the Chief Technology Officer ensures that all software solutions maintain high availability and security standards. This leadership role involves managing the transition to cloud-native architectures and optimizing the performance of fraud prevention systems. By driving innovation in payment orchestration, Jeffrey Kissling supports the company's mission to provide reliable technology for financial institutions and billers. The Chief Technology Officer coordinates with product teams to integrate emerging technologies into the existing service framework, ensuring that ACI Worldwide remains at the forefront of the fintech industry. Through rigorous technical oversight and strategic planning, Kissling maintains the integrity and scalability of the firm's digital payment ecosystem.

    Praveena Nathawat - Chief Human Resources Officer

    Praveena Nathawat, the Chief Human Resources Officer at ACI Worldwide, directs the global talent strategy and organizational development initiatives. Overseeing the recruitment and retention of specialized technical talent, the Chief Human Resources Officer ensures that the workforce possesses the skills necessary to advance cloud-based payment technology. This leadership role involves fostering a culture of innovation and inclusivity that supports the company's mission across multiple countries. By implementing performance management systems and professional development programs, Praveena Nathawat drives employee engagement and operational excellence. The Chief Human Resources Officer collaborates with leadership to align human capital strategies with the company's broader business objectives in the financial technology sector. Through effective organizational design and talent management, Nathawat builds the internal capacity required to sustain the firm's competitive advantage in the global market.
    Praveena Nathawat

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    Frequently Asked Questions Regarding ACI Worldwide Top Executives and Leadership Team

    Who leads ACI Worldwide?
    ACI Worldwide is led by Evelyn Sasmito (Group Chief Executive Officer), along with executives such as Thomas Warsop (President & Chief Executive Officer) and Isaac Moscovich (Visual Web Solutions Founder & Chief Executive Officer).
    Who is part of ACI Worldwide’s executive team?
    The executive team of ACI Worldwide includes leaders such as Evelyn Sasmito (Group Chief Executive Officer), Thomas Warsop (President & Chief Executive Officer), Isaac Moscovich (Visual Web Solutions Founder & Chief Executive Officer) and other senior executives.
    How many executives does ACI Worldwide have?
    ACI Worldwide has 6 executives leading key business areas.
    What roles are included in ACI Worldwide’s leadership team?
    The leadership team of ACI Worldwide includes roles such as Group Chief Executive Officer, President & Chief Executive Officer, Visual Web Solutions Founder & Chief Executive Officer, Chief Financial Officer, Chief Technology Officer.