Eliassen Group Executive and Leadership Team

October, 2026

Leadership Overview

Eliassen Group has 10 executives leading key functions including strategic consulting, financial management, operational oversight, and business advisory solutions.

Focused on delivering transformative business and IT services, Eliassen Group empowers clients to execute complex strategies that drive exceptional outcomes across diverse market sectors.

Leadership Roles at Eliassen Group

  • Chief Executive Officer - David MacKeen
  • Chief Financial Officer - Marc Cirrone
  • Chief Financial Officer & Partner - Delores Lenzy-Jones
  • Chief Financial Officer, Consulting - Jill Mattingly
  • Chief Financial Officer & General Counsel - James Polonczyk
  • Chief Operating Officer - David Viani
  • Chief Operating Officer & General Counsel - Todd Keebaugh
  • President, Technology & Life Sciences Divisions - Taz Stephens
  • President, Business Advisory Solutions - Kerry Barrett
  • Chief of Staff - Christine Luke
  • David MacKeen - Chief Executive Officer

    David MacKeen, the Chief Executive Officer at Eliassen Group, directs the overarching strategic vision and long-term growth trajectory of the firm. By aligning business and IT consulting services with evolving client needs, the Chief Executive Officer ensures the organization maintains a competitive edge in the professional services landscape. MacKeen oversees the integration of diverse service lines to support large-scale digital transformation initiatives across North American markets. This leadership role involves constant collaboration with the Board to refine corporate objectives and enhance service delivery models. Through rigorous focus on operational excellence and client satisfaction, David MacKeen drives the firm toward sustainable expansion. Ultimately, the Chief Executive Officer secures the company's position as a premier partner for organizations seeking to navigate complex technological and operational challenges.
    David MacKeen

    Marc Cirrone - Chief Financial Officer

    Marc Cirrone, the Chief Financial Officer at Eliassen Group, governs the financial health and fiscal strategy of the organization. By overseeing capital allocation and budgeting processes, the Chief Financial Officer ensures the firm possesses the resources required for sustained growth in the IT services sector. Cirrone manages financial reporting and risk assessment to maintain transparency with stakeholders and partners. This leadership role involves analyzing market trends to inform investment decisions and long-term financial planning. Marc Cirrone directs the financial operations team to optimize cash flow and profitability across all consulting engagements. By implementing robust fiscal controls, the Chief Financial Officer supports the firm's ability to scale operations effectively. Ultimately, Cirrone provides the financial stability needed to pursue ambitious strategic objectives and maintain market leadership.

    Delores Lenzy-Jones - Chief Financial Officer & Partner

    Delores Lenzy-Jones, the Chief Financial Officer & Partner at Eliassen Group, shapes the long-term financial strategy and partnership structure of the firm. By evaluating potential acquisitions and strategic investments, the Chief Financial Officer & Partner ensures the organization maintains a strong balance sheet while pursuing market expansion. Lenzy-Jones oversees the financial health of the partnership, ensuring alignment between fiscal performance and the firm's broader consulting mission. This leadership role involves high-level collaboration with other partners to define the company's future direction and investment priorities. Delores Lenzy-Jones directs the financial planning and analysis functions to support sustainable growth across all business units. By balancing risk and opportunity, the Chief Financial Officer & Partner secures the firm's financial foundation. Ultimately, Lenzy-Jones drives the strategic financial initiatives that define the company's market impact.
    Delores Lenzy-Jones

    Jill Mattingly - Chief Financial Officer, Consulting

    Jill Mattingly, the Chief Financial Officer, Consulting at Eliassen Group, manages the financial performance and profitability of the firm's consulting divisions. By analyzing project-level economics and resource utilization, the Chief Financial Officer, Consulting ensures that each engagement contributes positively to the company's bottom line. Mattingly oversees the financial reporting for the consulting arm, providing insights that drive better decision-making for service delivery teams. This leadership role involves working closely with division heads to optimize pricing models and cost structures. Jill Mattingly directs the financial oversight of client portfolios to ensure alignment with corporate revenue targets. By maintaining rigorous financial discipline within the consulting practice, the Chief Financial Officer, Consulting supports the firm's ability to deliver high-value solutions. Ultimately, Mattingly ensures the financial viability of the firm's core service offerings.

    James Polonczyk - Chief Financial Officer & General Counsel

    James Polonczyk, the Chief Financial Officer & General Counsel at Eliassen Group, governs the intersection of financial strategy and legal compliance. By overseeing the firm's fiscal reporting and legal risk management, the Chief Financial Officer & General Counsel ensures that all financial transactions align with corporate governance standards. Polonczyk manages the legal aspects of financial agreements and corporate structuring to support the firm's growth initiatives. This leadership role involves collaborating with the executive team to navigate complex regulatory environments while maintaining financial transparency. James Polonczyk directs the financial and legal departments to ensure that all business activities remain compliant and profitable. By integrating these two critical functions, the Chief Financial Officer & General Counsel provides a stable framework for the firm's strategic operations. Ultimately, Polonczyk protects the company's assets while driving fiscal performance.

    David Viani - Chief Operating Officer

    David Viani, the Chief Operating Officer at Eliassen Group, architects the internal infrastructure and delivery frameworks that support the firm's consulting services. By focusing on the scalability of service delivery, the Chief Operating Officer ensures that client engagements remain efficient and high-quality. Viani oversees the day-to-day operations of the business, implementing standardized processes that enhance productivity across all departments. This leadership role involves managing the resource allocation necessary to meet the demands of complex IT and business transformation projects. David Viani drives operational improvements by integrating new technologies and methodologies into the firm's core service offerings. By optimizing internal workflows, the Chief Operating Officer supports the company's ability to deliver consistent results. Ultimately, Viani ensures that the firm's operational capacity aligns with its strategic growth targets.
    David Viani

    Todd Keebaugh - Chief Operating Officer & General Counsel

    Todd Keebaugh, the Chief Operating Officer & General Counsel at Eliassen Group, integrates operational management with legal oversight to mitigate risk and drive efficiency. By overseeing the firm's legal affairs and compliance frameworks, the Chief Operating Officer & General Counsel ensures that all business activities adhere to regulatory standards. Keebaugh manages the operational aspects of the firm's legal strategy, including contract negotiations and risk management for large-scale consulting projects. This leadership role involves balancing the need for operational agility with the necessity of legal protection. Todd Keebaugh directs the legal and operations teams to support the firm's expansion into new markets. By providing a secure legal foundation, the Chief Operating Officer & General Counsel enables the company to pursue complex business opportunities with confidence. Ultimately, Keebaugh safeguards the firm's interests while promoting operational excellence.

    Taz Stephens - President, Technology & Life Sciences Divisions

    Taz Stephens, the President, Technology & Life Sciences Divisions at Eliassen Group, directs the growth and service delivery for the firm's specialized technology and life sciences sectors. By overseeing the development of industry-specific consulting solutions, the President, Technology & Life Sciences Divisions ensures that the firm meets the unique needs of clients in these high-growth markets. Stephens manages the talent and resource strategies required to support complex technical and scientific projects. This leadership role involves identifying emerging market trends and aligning the firm's capabilities to capture new opportunities. Taz Stephens drives the expansion of these divisions by fostering deep client relationships and delivering high-impact results. By focusing on sector-specific expertise, the President, Technology & Life Sciences Divisions strengthens the firm's competitive position. Ultimately, Stephens ensures the success of these critical business units through targeted strategic execution.

    Kerry Barrett - President, Business Advisory Solutions

    Kerry Barrett, the President, Business Advisory Solutions at Eliassen Group, leads the strategic consulting and advisory services that help clients navigate organizational change. By overseeing the development of business transformation frameworks, the President, Business Advisory Solutions ensures that the firm provides actionable insights for complex corporate challenges. Barrett manages the advisory team to deliver high-value solutions that improve operational performance and strategic alignment. This leadership role involves working with clients to define their business goals and implementing the strategies necessary to achieve them. Kerry Barrett directs the expansion of the advisory practice by focusing on innovation and client-centric service delivery. By leveraging deep industry knowledge, the President, Business Advisory Solutions drives the firm's reputation as a trusted advisor. Ultimately, Barrett ensures that the advisory division delivers measurable outcomes that support the firm's overall growth.
    Kerry Barrett

    Christine Luke - Chief of Staff

    Christine Luke, the Chief of Staff at Eliassen Group, manages the internal alignment of executive priorities and cross-functional initiatives. By facilitating communication between leadership tiers, the Chief of Staff ensures that strategic goals translate into actionable operational plans. Luke coordinates high-impact projects that span the entire organization, focusing on efficiency and organizational health. This role requires constant monitoring of performance metrics to support the firm's consulting mission. Christine Luke optimizes the flow of information to the executive team, enabling rapid decision-making during critical business transitions. By streamlining internal processes, the Chief of Staff fosters a culture of accountability and high performance. Ultimately, Luke maintains the operational rhythm necessary for the firm to deliver consistent value to clients across all service divisions.

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    Frequently Asked Questions Regarding Eliassen Group Top Executives and Leadership Team

    Who leads Eliassen Group?
    Eliassen Group is led by David MacKeen (Chief Executive Officer), along with executives such as Marc Cirrone (Chief Financial Officer) and Delores Lenzy-Jones (Chief Financial Officer & Partner).
    Who is part of Eliassen Group’s executive team?
    The executive team of Eliassen Group includes leaders such as David MacKeen (Chief Executive Officer), Marc Cirrone (Chief Financial Officer), Delores Lenzy-Jones (Chief Financial Officer & Partner) and other senior executives.
    How many executives does Eliassen Group have?
    Eliassen Group has 10 executives leading key business areas.
    What roles are included in Eliassen Group’s leadership team?
    The leadership team of Eliassen Group includes roles such as Chief Executive Officer, Chief Financial Officer, Chief Financial Officer & Partner, Chief Financial Officer, Consulting, Chief Financial Officer & General Counsel.