CGS Executive and Leadership Team

August, 2026

Leadership Overview

CGS has 10 executives leading key functions including strategy, technology, marketing, human resources, and division operations.

Focused on delivering comprehensive software and outsourcing services, CGS empowers global enterprises through immersive technologies and enterprise learning solutions to address complex, multi-dimensional business requirements across international markets.

Leadership Roles at CGS

  • Chief Executive Officer - Patcharanon Cheevakrianggrai
  • Founder & Chief Executive Officer - David Chestnut
  • Division President, Learning - Doug Stephen
  • Owner and President of Hydrogeologic Consulting Company - Kenrick Lee
  • President - Paul Magel
  • President - Gary Biesinger
  • Chief Information Officer - Michael Fitzpatrick
  • Chief Marketing Officer & Senior VP - David Grabert
  • Senior VP, Human Resources & Chief Human Resources Officer - Savio Rebelo
  • Senior Vice President, Global Chief Information Officer - James Tietjen
  • Patcharanon Cheevakrianggrai - Chief Executive Officer

    Patcharanon Cheevakrianggrai, the Chief Executive Officer at CGS, directs the overarching corporate strategy and global business expansion. Overseeing the integration of software applications and outsourcing services, the Chief Executive Officer ensures alignment with the evolving needs of international clients. This leadership role involves driving operational excellence across North America, South America, Europe, the Middle East, and Asia. By prioritizing innovation in immersive technologies, Patcharanon Cheevakrianggrai secures a competitive market position for the organization. The Chief Executive Officer maintains focus on long-term growth, fostering partnerships that support fundamental business activities. Through rigorous oversight of service delivery models, the Chief Executive Officer optimizes performance metrics. Ultimately, Cheevakrianggrai shapes the strategic trajectory of the firm, ensuring that all global operations remain responsive to the complex demands of the modern digital landscape while maintaining high standards of service quality and client satisfaction.

    David Chestnut - Founder & Chief Executive Officer

    David Chestnut, the Founder & Chief Executive Officer at CGS, architects the foundational vision and long-term mission of the organization. Managing the strategic direction of enterprise learning and customer experience services, the Founder & Chief Executive Officer ensures that the company remains a leader in the tech consulting sector. This leadership role involves cultivating a culture of innovation that permeates all global offices. By guiding the executive team, David Chestnut drives the development of comprehensive solutions tailored to multi-dimensional client needs. The Founder & Chief Executive Officer monitors market trends to anticipate shifts in the global outsourcing industry. Through consistent engagement with key stakeholders, the Founder & Chief Executive Officer reinforces the commitment to excellence in software application delivery. Ultimately, Chestnut provides the necessary guidance to sustain growth, ensuring that the firm continues to provide high-value services that support the most fundamental business activities of clients worldwide.

    Doug Stephen - Division President, Learning

    Doug Stephen, the Division President, Learning at CGS, directs the strategy and operations for the enterprise learning division. Overseeing the development of training programs and educational software, the Division President, Learning ensures that clients receive high-impact solutions for workforce development. This leadership role involves expanding the reach of learning services across international markets. By tailoring educational content to specific industry requirements, Doug Stephen drives client success and retention. The Division President, Learning collaborates with the sales and marketing teams to promote the value of learning solutions. Through the management of instructional design and delivery teams, the Division President, Learning maintains high standards of pedagogical excellence. Ultimately, Stephen shapes the growth of the learning division, ensuring that the firm provides comprehensive training tools that support the fundamental business activities of global enterprises while addressing the complex needs of modern professional development.

    Kenrick Lee - Owner and President of Hydrogeologic Consulting Company

    Kenrick Lee, the Owner and President of Hydrogeologic Consulting Company at CGS, directs specialized consulting operations that integrate technical expertise with broader business solutions. Overseeing the delivery of niche consulting services, the Owner and President of Hydrogeologic Consulting Company ensures that clients receive precise, data-driven insights for complex projects. This leadership role involves managing the technical team to maintain high standards of accuracy and reliability. By leveraging deep industry knowledge, Kenrick Lee drives the development of specialized service offerings that complement the firm's broader portfolio. The Owner and President of Hydrogeologic Consulting Company coordinates with other divisions to provide multi-dimensional support to clients. Through the oversight of project execution, the Owner and President of Hydrogeologic Consulting Company ensures that all deliverables align with client expectations. Ultimately, Lee contributes to the firm's reputation for excellence, providing specialized expertise that supports the fundamental business activities of clients in highly technical sectors.

    Paul Magel - President

    Paul Magel, the President at CGS, directs the operational execution of the company's core business units. Overseeing the delivery of software applications and customer experience services, the President ensures that all operational processes remain efficient and scalable. This leadership role involves managing the performance of regional teams to ensure consistent service quality across North America and international markets. By streamlining workflows, Paul Magel drives operational excellence and cost-effectiveness. The President collaborates with the executive team to implement strategic initiatives that support long-term growth. Through the oversight of service delivery, the President ensures that the firm meets the complex, multi-dimensional needs of its clients. Ultimately, Magel maintains the operational health of the organization, ensuring that all business activities remain aligned with the company's mission to provide comprehensive solutions that support the fundamental business activities of clients while maintaining high standards of service delivery.

    Gary Biesinger - President

    Gary Biesinger, the President at CGS, directs the strategic expansion of the firm's outsourcing and call center services. Overseeing the management of large-scale client accounts, the President ensures that service delivery remains aligned with the specific requirements of global enterprises. This leadership role involves optimizing the performance of customer experience teams to enhance client satisfaction. By implementing best practices in service management, Gary Biesinger drives the efficiency of the outsourcing division. The President works closely with the technology teams to integrate new tools into the service delivery model. Through the oversight of client relationships, the President ensures that the firm continues to provide high-value support for fundamental business activities. Ultimately, Biesinger strengthens the market position of the company, ensuring that the outsourcing division remains a key driver of growth while delivering comprehensive solutions that address the complex, multi-dimensional needs of clients across all international regions.

    Michael Fitzpatrick - Chief Information Officer

    Michael Fitzpatrick, the Chief Information Officer at CGS, directs the internal digital infrastructure and cybersecurity frameworks. Overseeing the technological backbone that supports global software applications and call center outsourcing, the Chief Information Officer ensures seamless operational continuity across all international regions. This leadership role involves implementing advanced data protection protocols to safeguard client information. By modernizing internal systems, Michael Fitzpatrick enhances the efficiency of service delivery teams. The Chief Information Officer collaborates with other C-suite leaders to integrate emerging technologies into the existing service portfolio. Through the management of complex IT environments, the Chief Information Officer supports the scalability of the business model. Ultimately, Fitzpatrick maintains the integrity of the digital ecosystem, ensuring that all technological assets align with the strategic goals of the firm while providing a robust foundation for the delivery of immersive technologies and enterprise learning solutions.

    David Grabert - Chief Marketing Officer & Senior VP

    David Grabert, the Chief Marketing Officer & Senior VP at CGS, architects the global brand strategy and market positioning initiatives. Overseeing the communication of value propositions for software applications and immersive technologies, the Chief Marketing Officer & Senior VP ensures consistent messaging across North America, Europe, and Asia. This leadership role involves driving lead generation efforts that support the growth of outsourcing services. By analyzing market data, David Grabert identifies new opportunities for expansion within the tech consulting industry. The Chief Marketing Officer & Senior VP coordinates with sales teams to align marketing campaigns with revenue targets. Through the development of targeted content, the Chief Marketing Officer & Senior VP elevates the visibility of the firm among enterprise clients. Ultimately, Grabert strengthens the market presence of the company, ensuring that the brand remains synonymous with high-quality, comprehensive solutions that address the complex needs of modern businesses.

    Savio Rebelo - Senior VP, Human Resources & Chief Human Resources Officer

    Savio Rebelo, the Senior VP, Human Resources & Chief Human Resources Officer at CGS, directs the global talent acquisition and organizational development strategies. Overseeing the workforce planning for call center outsourcing and software development teams, the Senior VP, Human Resources & Chief Human Resources Officer ensures that the company attracts and retains top-tier professionals. This leadership role involves fostering an inclusive corporate culture that supports the diverse needs of employees across international offices. By implementing performance management systems, Savio Rebelo drives employee engagement and productivity. The Senior VP, Human Resources & Chief Human Resources Officer collaborates with the executive team to align human capital strategies with business growth objectives. Through the management of training programs, the Senior VP, Human Resources & Chief Human Resources Officer ensures that the workforce remains equipped to deliver high-quality services. Ultimately, Rebelo strengthens the organizational foundation, ensuring that the firm maintains a competitive edge through its people.
    Savio Rebelo

    James Tietjen - Senior Vice President, Global Chief Information Officer

    James Tietjen, the Senior Vice President, Global Chief Information Officer at CGS, directs the strategic deployment of client-facing technology solutions. Overseeing the architecture of immersive technologies and enterprise software platforms, the Senior Vice President, Global Chief Information Officer ensures that all digital products meet the rigorous demands of global clients. This leadership role involves managing the lifecycle of software development projects to ensure timely delivery and high performance. By optimizing cloud infrastructure, James Tietjen enhances the scalability of the service offerings. The Senior Vice President, Global Chief Information Officer works closely with the product teams to integrate client feedback into future iterations. Through the oversight of technical resources, the Senior Vice President, Global Chief Information Officer supports the firm's commitment to innovation. Ultimately, Tietjen drives the technological advancement of the company, ensuring that all software applications remain at the forefront of the industry while supporting the fundamental business activities of clients.
    James Tietjen

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    Frequently Asked Questions Regarding CGS Top Executives and Leadership Team

    Who leads CGS?
    CGS is led by Patcharanon Cheevakrianggrai (Chief Executive Officer), along with executives such as David Chestnut (Founder & Chief Executive Officer) and Doug Stephen (Division President, Learning).
    Who is part of CGS’s executive team?
    The executive team of CGS includes leaders such as Patcharanon Cheevakrianggrai (Chief Executive Officer), David Chestnut (Founder & Chief Executive Officer), Doug Stephen (Division President, Learning) and other senior executives.
    How many executives does CGS have?
    CGS has 10 executives leading key business areas.
    What roles are included in CGS’s leadership team?
    The leadership team of CGS includes roles such as Chief Executive Officer, Founder & Chief Executive Officer, Division President, Learning, Owner and President of Hydrogeologic Consulting Company, President.