Mondee Executive and Leadership Team

June, 2026

Leadership Overview

Mondee has 5 executives leading key functions including strategy, operations, finance, staff, and regional leadership.

Driven by disruptive innovation, Mondee is dedicated to transforming the leisure and corporate travel markets through its revolutionary technology platform, delivering SaaS, mobile, and cloud products to a global customer base.

Leadership Roles at Mondee

  • Chief Executive Officer - Thomas Kalinske
  • Chief Financial Officer - Jesus Portillo
  • Chief Operating Officer - James Dullum
  • President - Atlantic - Michalis Tsakos
  • Chief of Staff - Sweta Gusain
  • Thomas Kalinske - Chief Executive Officer

    Thomas Kalinske, the Chief Executive Officer at Mondee, directs the company's overall strategic vision and operational execution. Kalinske guides Mondee's mission to drive disruptive innovation within the leisure and corporate travel sectors. Overseeing the integration of leading travel technology, service, and content companies, the Chief Executive Officer ensures a cohesive approach to market challenges. This leadership involves expanding the global customer base through Mondee's revolutionary SaaS, mobile, and cloud products. By fostering strategic partnerships and driving product development, Thomas Kalinske solidifies Mondee's position as a market leader. The Chief Executive Officer's focus remains on delivering unparalleled value and technological advancement across all business units.

    Jesus Portillo - Chief Financial Officer

    Jesus Portillo, the Chief Financial Officer at Mondee, oversees all financial operations and strategic fiscal planning. Portillo manages the company's financial health, ensuring robust capital allocation for Mondee's innovative technology platform. This leadership position involves guiding financial strategies that support the expansion of SaaS, mobile, and cloud products to a global customer base. The Chief Financial Officer works to optimize revenue streams and manage expenditures, directly impacting the company's profitability and market competitiveness. By providing critical financial insights, Jesus Portillo enables informed decision-making across all business units. The Chief Financial Officer's expertise is essential for sustaining Mondee's growth and driving financial stability in the travel technology sector.

    James Dullum - Chief Operating Officer

    James Dullum, the Chief Operating Officer at Mondee, directs the company's day-to-day operational activities and service delivery. Dullum ensures the seamless execution of Mondee's technology platform, encompassing SaaS, mobile, and cloud products for a worldwide clientele. This role focuses on optimizing operational efficiency and scaling services to meet the demands of the leisure and corporate travel markets. The Chief Operating Officer collaborates with various teams to enhance customer experience and maintain high standards of service quality. By overseeing global operations, James Dullum drives the effective implementation of strategic initiatives. The Chief Operating Officer's leadership is vital for maintaining Mondee's competitive edge through operational excellence and continuous improvement.
    James Dullum

    Michalis Tsakos - President - Atlantic

    Michalis Tsakos, the President - Atlantic at Mondee, leads the company's strategic initiatives and business development across the Atlantic region. Tsakos drives the expansion of Mondee's innovative travel technology solutions, including SaaS, mobile, and cloud products, within this key market. This executive role involves fostering strong relationships with regional partners and customers to enhance market penetration. The President - Atlantic oversees the operational execution and financial performance of the company's activities in the designated territories. By aligning regional strategies with Mondee's global vision, Michalis Tsakos ensures consistent growth and service delivery. The President - Atlantic's focus is on maximizing market opportunities and strengthening Mondee's presence in the Atlantic region.

    Sweta Gusain - Chief of Staff

    Sweta Gusain, the Chief of Staff at Mondee, facilitates strategic initiatives and operational efficiency across the organization. Gusain supports the executive leadership team by streamlining communication and ensuring alignment with corporate objectives. This role involves managing key projects and driving cross-functional collaboration to advance Mondee's disruptive innovation in travel technology. The Chief of Staff works closely with various departments to implement the company's vision for SaaS, mobile, and cloud products. By optimizing internal processes and supporting strategic decision-making, Sweta Gusain enhances the overall effectiveness of Mondee's global operations. The Chief of Staff's contributions are critical to maintaining momentum in the dynamic travel market.

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    Frequently Asked Questions Regarding Mondee Top Executives and Leadership Team

    Who leads Mondee?
    Mondee is led by Thomas Kalinske (Chief Executive Officer), along with executives such as Jesus Portillo (Chief Financial Officer) and James Dullum (Chief Operating Officer).
    Who is part of Mondee’s executive team?
    The executive team of Mondee includes leaders such as Thomas Kalinske (Chief Executive Officer), Jesus Portillo (Chief Financial Officer), James Dullum (Chief Operating Officer) and other senior executives.
    How many executives does Mondee have?
    Mondee has 5 executives leading key business areas.
    What roles are included in Mondee’s leadership team?
    The leadership team of Mondee includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, President - Atlantic, Chief of Staff.