Zinnia Executive and Leadership Team

September, 2026

Leadership Overview

Zinnia has 9 executives leading key functions including strategy, financial oversight, operational management, human resources, and legal administration.

Focused on transforming healthcare through digital innovation, Zinnia delivers advanced wellness solutions that optimize patient care outcomes and streamline complex operational workflows across the global health technology landscape.

Leadership Roles at Zinnia

  • Chief Executive Officer - George Esposito
  • Founder & Chief Executive Officer - Eldana Sime
  • Chief Financial Officer - Kihara Kiarie
  • Chief of Staff - Callie Thomas
  • Operations Chief of Staff - Gregory Heinen
  • Chief Human Resources Officer - Elaine Page
  • Director, Chief of Staff - David Siebold
  • Chief People Officer, Se2 - Errol Williams
  • Chief Legal & Administrative Officer - David Sandler
  • George Esposito - Chief Executive Officer

    George Esposito, the Chief Executive Officer at Zinnia, directs the overarching corporate strategy to advance healthcare technology solutions. Esposito architects long-term growth initiatives while ensuring the alignment of product development with evolving wellness industry standards. By fostering partnerships across North American markets, the Chief Executive Officer drives the expansion of digital health platforms designed to improve patient outcomes. This leadership role involves constant evaluation of market trends to maintain a competitive edge in the wellness sector. George Esposito monitors organizational performance metrics to guarantee operational excellence and fiscal health. Through rigorous oversight of executive teams, the Chief Executive Officer maintains a focus on innovation and efficiency. The strategic vision provided by Esposito empowers the entire organization to deliver high-impact software solutions that address critical gaps in modern healthcare delivery systems, ultimately securing a dominant position within the competitive health technology marketplace.

    Eldana Sime - Founder & Chief Executive Officer

    Eldana Sime, the Founder & Chief Executive Officer at Zinnia, defines the core mission and vision for the organization. Sime drives the development of innovative wellness software by identifying unique opportunities to enhance patient care efficiency. As the primary architect of the company culture, the Founder & Chief Executive Officer promotes a commitment to excellence and technological advancement. Eldana Sime manages high-level stakeholder relationships to ensure sustained investment and support for new product initiatives. This leadership role requires balancing immediate operational needs with the long-term strategic goals of the firm. By overseeing the integration of new wellness technologies, the Founder & Chief Executive Officer ensures that the company remains at the forefront of the health software industry. Sime maintains a focus on scaling operations to meet the growing demands of global healthcare providers, consistently pushing the boundaries of what digital wellness solutions can achieve for patients and providers alike.

    Kihara Kiarie - Chief Financial Officer

    Kihara Kiarie, the Chief Financial Officer at Zinnia, manages the fiscal health and capital allocation strategies for the organization. Kiarie oversees financial planning, budgeting, and reporting processes to ensure the company maintains robust liquidity for ongoing healthcare software development. By analyzing market data, the Chief Financial Officer identifies cost-saving opportunities and revenue growth channels that support the broader mission of enhancing patient care. Kihara Kiarie collaborates with the executive team to evaluate the financial viability of new wellness product launches and expansion efforts. This leadership role involves maintaining strict compliance with regulatory standards while optimizing the capital structure for long-term stability. Through precise financial forecasting, the Chief Financial Officer provides the necessary insights for strategic decision-making. Kiarie ensures that all fiscal operations align with the company's commitment to operational efficiency, ultimately securing the resources required to sustain innovation in the competitive health technology sector.

    Callie Thomas - Chief of Staff

    Callie Thomas, the Chief of Staff at Zinnia, coordinates cross-functional initiatives to streamline internal communications and project execution. Thomas facilitates the implementation of strategic priorities by aligning departmental goals with the overarching mission of improving healthcare wellness outcomes. As a central point of contact for the executive leadership team, the Chief of Staff manages complex workflows and ensures that critical business objectives receive necessary attention. Callie Thomas monitors the progress of key projects, identifying bottlenecks and implementing solutions to maintain operational momentum. This leadership role involves synthesizing information from various business units to provide actionable insights for the executive team. By optimizing internal processes, the Chief of Staff enhances the overall efficiency of the organization. Thomas ensures that all teams remain focused on delivering high-quality software solutions, thereby supporting the company's goal of transforming patient care through innovative technology and disciplined project management.

    Gregory Heinen - Operations Chief of Staff

    Gregory Heinen, the Operations Chief of Staff at Zinnia, focuses on the tactical execution of operational improvements across the company. Heinen directs the refinement of internal systems to enhance the delivery of healthcare wellness software. By analyzing operational data, the Operations Chief of Staff identifies inefficiencies and implements process improvements that support the company's commitment to operational excellence. Gregory Heinen coordinates with department heads to ensure that resources are allocated effectively to meet project deadlines and quality standards. This leadership role involves managing the day-to-day operational cadence of the organization to ensure alignment with strategic goals. Through the optimization of workflows, the Operations Chief of Staff enables the company to scale its wellness solutions more effectively. Heinen maintains a focus on continuous improvement, ensuring that all operational activities contribute directly to the company's mission of enhancing patient care and operational efficiency within the health technology sector.

    Elaine Page - Chief Human Resources Officer

    Elaine Page, the Chief Human Resources Officer at Zinnia, leads the talent acquisition and organizational development strategies. Page architects programs that attract and retain top-tier professionals capable of advancing the company's healthcare wellness software mission. By fostering a culture of innovation and inclusivity, the Chief Human Resources Officer ensures that the workforce remains aligned with the company's core values. Elaine Page oversees performance management systems and professional development initiatives to enhance employee productivity and engagement. This leadership role involves managing complex human capital requirements to support the company's growth in the health technology market. Through the implementation of effective HR policies, the Chief Human Resources Officer maintains a high-performing team dedicated to improving patient care. Page ensures that the organization possesses the necessary talent to drive technological breakthroughs, ultimately supporting the company's long-term success and its ability to deliver impactful wellness solutions to the global healthcare industry.
    Elaine Page

    David Siebold - Director, Chief of Staff

    David Siebold, the Director, Chief of Staff at Zinnia, manages high-priority strategic projects that bridge the gap between executive vision and technical execution. Siebold directs the planning and implementation of initiatives designed to enhance the company's wellness software offerings. By coordinating efforts across engineering and product teams, the Director, Chief of Staff ensures that development cycles remain focused on improving patient care outcomes. David Siebold monitors project milestones and resource utilization to guarantee that all efforts align with the company's operational efficiency goals. This leadership role involves facilitating communication between technical leads and the executive team to resolve complex challenges. Through the application of rigorous project management methodologies, the Director, Chief of Staff drives the successful delivery of innovative health solutions. Siebold maintains a focus on achieving measurable business outcomes, ensuring that the company continues to lead in the development of advanced healthcare technology and wellness platforms.

    Errol Williams - Chief People Officer, Se2

    Errol Williams, the Chief People Officer, Se2 at Zinnia, oversees the human capital strategy specifically for the Se2 division. Williams architects initiatives that promote employee well-being and professional growth within the specialized health technology environment. By aligning talent management with the division's specific operational goals, the Chief People Officer, Se2 ensures that the team remains equipped to deliver high-quality wellness software. Errol Williams manages recruitment, training, and retention programs that support the company's broader mission of enhancing patient care. This leadership role involves cultivating a collaborative work environment that encourages innovation and technical excellence. Through the implementation of strategic people-focused policies, the Chief People Officer, Se2 drives organizational performance and employee satisfaction. Williams ensures that the workforce remains motivated and capable of addressing the complex challenges inherent in the healthcare software industry, ultimately contributing to the company's overall success and market impact.
    David Sandler, the Chief Legal & Administrative Officer at Zinnia, directs the legal, compliance, and administrative functions of the organization. Sandler architects strategies to mitigate risk while supporting the company's expansion into new healthcare wellness markets. By overseeing regulatory compliance, the Chief Legal & Administrative Officer ensures that all software solutions meet the stringent requirements of the health technology industry. David Sandler manages corporate governance and administrative operations to maintain the integrity and efficiency of the business. This leadership role involves negotiating complex contracts and partnerships that facilitate the company's growth. Through the provision of sound legal counsel, the Chief Legal & Administrative Officer enables the executive team to pursue strategic opportunities with confidence. Sandler maintains a focus on protecting the company's intellectual property and ensuring that all administrative processes support the mission of enhancing patient care and operational efficiency across the global wellness landscape.

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    Frequently Asked Questions Regarding Zinnia Top Executives and Leadership Team

    Who leads Zinnia?
    Zinnia is led by George Esposito (Chief Executive Officer), along with executives such as Eldana Sime (Founder & Chief Executive Officer) and Kihara Kiarie (Chief Financial Officer).
    Who is part of Zinnia’s executive team?
    The executive team of Zinnia includes leaders such as George Esposito (Chief Executive Officer), Eldana Sime (Founder & Chief Executive Officer), Kihara Kiarie (Chief Financial Officer) and other senior executives.
    How many executives does Zinnia have?
    Zinnia has 9 executives leading key business areas.
    What roles are included in Zinnia’s leadership team?
    The leadership team of Zinnia includes roles such as Chief Executive Officer, Founder & Chief Executive Officer, Chief Financial Officer, Chief of Staff, Operations Chief of Staff.