ACI Worldwide Executive and Leadership Team

September, 2026

Leadership Overview

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

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

Leadership Roles at ACI Worldwide

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

    Isaac Moscovich, the Visual Web Solutions Founder & Chief Executive Officer at ACI Worldwide, directs the integration of intuitive digital interfaces within the broader payment ecosystem. By prioritizing user-centric design, the Chief Executive Officer ensures that complex financial transactions remain accessible for merchants and billers across diverse global markets. This leadership role involves architecting seamless digital experiences that enhance the overall utility of the ACI payment orchestration platform. Isaac Moscovich maintains a sharp focus on evolving web-based payment standards to meet the demands of modern digital commerce. Through constant innovation in interface architecture, the Chief Executive Officer drives higher engagement rates for financial institutions utilizing these tools. By aligning visual strategy with core software capabilities, the Chief Executive Officer strengthens the market position of the company in the competitive fintech landscape, ultimately fostering long-term adoption of cloud-based payment solutions.

    Evelyn Sasmito - Group Chief Executive Officer

    Evelyn Sasmito, the Group Chief Executive Officer at ACI Worldwide, oversees the strategic expansion of payment processing solutions across international territories. By managing the complex requirements of global banking and merchant payments, the Group Chief Executive Officer ensures operational excellence in every region. This leadership role involves coordinating cross-functional teams to deliver real-time payment platforms that address specific regional regulatory and financial needs. Evelyn Sasmito drives the overarching corporate vision, ensuring that the company maintains a competitive edge in the rapidly evolving software and technology industry. Through rigorous oversight of global market initiatives, the Group Chief Executive Officer secures consistent growth and operational efficiency. By fostering strong relationships with major financial institutions, the Group Chief Executive Officer solidifies the reputation of the company as a leader in secure, scalable payment technology, consistently delivering value to stakeholders through strategic market penetration and technological advancement.

    Thomas Warsop - President & Chief Executive Officer

    Thomas Warsop, the President & Chief Executive Officer at ACI Worldwide, directs the comprehensive strategic roadmap for the entire organization. By focusing on the delivery of mission-critical payment technology, the President & Chief Executive Officer ensures that the company remains at the forefront of the financial technology sector. This leadership role involves guiding the executive team toward achieving long-term growth objectives while maintaining high standards for fraud management and payment orchestration. Thomas Warsop oversees the alignment of product development with the evolving needs of global billers and financial institutions. Through decisive leadership, the President & Chief Executive Officer optimizes internal processes to support rapid innovation in cloud-based payment solutions. By championing a culture of excellence and accountability, the President & Chief Executive Officer drives the company toward sustained market leadership, ensuring that every strategic initiative directly contributes to the financial health and technological superiority of the organization.
    Thomas Warsop

    Robert Leibrock - Chief Financial Officer

    Robert Leibrock, the Chief Financial Officer at ACI Worldwide, manages the fiscal health and capital allocation strategies of the organization. By overseeing financial planning, reporting, and investor relations, the Chief Financial Officer ensures that the company maintains the resources necessary to support global expansion and technological investment. This leadership role involves analyzing market trends to guide the financial trajectory of the company within the software and technology industry. Robert Leibrock drives the implementation of robust financial controls that support the delivery of payment processing solutions to a diverse client base. Through strategic budgeting and risk management, the Chief Financial Officer secures the stability required for long-term growth. By providing critical financial insights to the Board and executive team, the Chief Financial Officer enables informed decision-making, ensuring that the company effectively balances profitability with the need for continuous innovation in the competitive fintech landscape.

    Jeffrey Kissling - Chief Technology Officer

    Jeffrey Kissling, the Chief Technology Officer at ACI Worldwide, architects the scalable cloud infrastructure that powers the company's real-time payment platforms. By managing the engineering teams responsible for payment orchestration and fraud prevention software, the Chief Technology Officer ensures that all systems meet the highest standards of security and performance. This leadership role involves evaluating emerging technologies to maintain the competitive advantage of the company in the global software market. Jeffrey Kissling drives the technical vision, ensuring that the platform architecture supports the high-volume demands of merchants and financial institutions worldwide. Through continuous optimization of the software stack, the Chief Technology Officer enhances the reliability and speed of digital payment solutions. By collaborating with other C-suite leaders, the Chief Technology Officer aligns technical capabilities with business goals, ensuring that the company remains a pioneer in secure, cloud-native financial technology and infrastructure.

    Praveena Nathawat - Chief Human Resources Officer

    Praveena Nathawat, the Chief Human Resources Officer at ACI Worldwide, directs the talent acquisition and organizational development strategies that support the company's global workforce. By fostering a culture of innovation and inclusivity, the Chief Human Resources Officer ensures that the company attracts and retains the top-tier engineering and financial talent required to build advanced payment technology. This leadership role involves designing comprehensive programs for employee engagement, performance management, and leadership development across all international operations. Praveena Nathawat drives the alignment of human capital initiatives with the broader business objectives of the company. Through the implementation of modern workplace policies, the Chief Human Resources Officer enhances organizational agility and operational efficiency. By championing professional growth and diversity, the Chief Human Resources Officer strengthens the internal foundation of the company, ensuring that the workforce remains fully equipped to address the complex challenges of the global financial technology 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 Isaac Moscovich (Visual Web Solutions Founder & Chief Executive Officer), along with executives such as Evelyn Sasmito (Group Chief Executive Officer) and Thomas Warsop (President & Chief Executive Officer).
    Who is part of ACI Worldwide’s executive team?
    The executive team of ACI Worldwide includes leaders such as Isaac Moscovich (Visual Web Solutions Founder & Chief Executive Officer), Evelyn Sasmito (Group Chief Executive Officer), Thomas Warsop (President & 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 Visual Web Solutions Founder & Chief Executive Officer, Group Chief Executive Officer, President & Chief Executive Officer, Chief Financial Officer, Chief Technology Officer.