Eliassen Group Executive and Leadership Team

September, 2026

Leadership Overview

Eliassen Group has 9 executives leading key functions including strategy, financial oversight, operational management, and specialized business advisory solutions.

Focused on delivering transformative IT and business consulting, Eliassen Group empowers organizations to execute complex strategies that drive exceptional market outcomes and long-term operational success.

Leadership Roles at Eliassen Group

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

    David MacKeen, the Chief Executive Officer at Eliassen Group, directs the overarching strategic vision for the firm. MacKeen architects the long-term growth trajectory by aligning business and IT consulting services with evolving client needs across North American markets. This leadership role involves constant collaboration with the Board to ensure the company maintains a competitive edge in the strategic consulting landscape. By fostering a culture of excellence, the Chief Executive Officer drives the organization toward achieving superior client outcomes. David MacKeen monitors market trends to identify new opportunities for service expansion and operational improvement. Through rigorous oversight of corporate initiatives, the Chief Executive Officer secures the firm's position as a leader in digital transformation. MacKeen prioritizes the integration of innovative methodologies to enhance service delivery, ensuring that every engagement provides measurable value to the diverse client base served by the company.
    David MacKeen

    Mark Hafeli - Chief Financial Officer

    Mark Hafeli, the Chief Financial Officer at Eliassen Group, manages the fiscal health and capital allocation strategies of the organization. Hafeli oversees financial planning, reporting, and risk management to support the firm's expansive consulting operations. By analyzing economic indicators, the Chief Financial Officer ensures the company maintains a robust balance sheet capable of funding future growth initiatives. This role requires close coordination with executive leadership to optimize resource distribution across various business units. Mark Hafeli implements sophisticated financial controls that safeguard assets while promoting sustainable revenue generation. The Chief Financial Officer evaluates investment opportunities in new technology and talent acquisition to bolster the firm's market presence. Through precise fiscal stewardship, Hafeli enables the company to navigate complex economic environments effectively. This leadership function remains critical for maintaining the financial stability required to deliver high-impact business and IT services to clients throughout the United States.

    Delores Lenzy-Jones - Chief Financial Officer & Partner

    Delores Lenzy-Jones, the Chief Financial Officer & Partner at Eliassen Group, drives the firm's long-term financial strategy and partnership development. Lenzy-Jones oversees capital structure and investment planning, ensuring the company remains well-positioned for strategic acquisitions and market expansion. By evaluating the financial viability of new service lines, the Chief Financial Officer & Partner supports the firm's commitment to innovation in IT consulting. This role involves managing relationships with key stakeholders and investors to secure the necessary funding for growth. Delores Lenzy-Jones implements advanced financial modeling to forecast market shifts and adjust corporate strategy accordingly. The Chief Financial Officer & Partner ensures that all financial operations align with the firm's core mission of delivering transformative business outcomes. Through rigorous oversight of fiscal performance, Lenzy-Jones maintains the financial health required to support the company's extensive consulting portfolio and long-term strategic objectives in the competitive business services industry.
    Delores Lenzy-Jones

    James Polonczyk - Chief Financial Officer & General Counsel

    James Polonczyk, the Chief Financial Officer & General Counsel at Eliassen Group, manages the intersection of financial strategy and legal governance. Polonczyk oversees the firm's fiscal reporting and regulatory compliance, ensuring that all financial activities align with legal mandates. By directing the legal department, the Chief Financial Officer & General Counsel protects the company's interests during high-stakes consulting engagements and strategic partnerships. This role involves managing corporate governance and ensuring that financial disclosures meet the highest standards of transparency. James Polonczyk evaluates the legal implications of financial decisions, providing the necessary oversight to minimize risk while maximizing profitability. The Chief Financial Officer & General Counsel collaborates with the executive team to structure complex business deals that support the firm's growth objectives. Through precise management of both financial and legal functions, Polonczyk secures the firm's stability and supports the delivery of high-quality business and IT services to clients.

    David Viani - Chief Operating Officer

    David Viani, the Chief Operating Officer at Eliassen Group, manages the internal infrastructure and service delivery mechanisms that support the firm's consulting engagements. Viani focuses on scaling operational capacity to meet the increasing demand for IT and business transformation services. By optimizing internal processes, the Chief Operating Officer ensures that project teams possess the resources required to deliver exceptional results for clients. This role involves overseeing the day-to-day execution of service delivery models, ensuring consistency and quality across all engagements. David Viani implements performance metrics to track operational efficiency and identify areas for continuous improvement. The Chief Operating Officer collaborates with other executives to align operational capabilities with the company's broader growth strategy. Through the management of internal systems, Viani supports the firm's ability to provide agile solutions in a competitive market. This leadership function remains essential for maintaining the high standards of service that define the company's reputation.
    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 enhance service delivery. Keebaugh directs the firm's compliance frameworks while simultaneously optimizing the operational workflows that support IT consulting projects. By balancing legal requirements with business agility, the Chief Operating Officer & General Counsel ensures that all client engagements adhere to industry standards and corporate policies. This role involves managing contractual obligations and protecting the firm's intellectual property during complex transformation projects. Todd Keebaugh oversees the legal aspects of business expansion, providing the necessary guidance to navigate regulatory landscapes. The Chief Operating Officer & General Counsel collaborates with leadership to refine operational processes, ensuring that legal safeguards do not impede the speed of service delivery. Through this dual-focus approach, Keebaugh maintains the integrity and efficiency of the firm's operations across all regional markets.

    Kerry Barrett - President, Business Advisory Solutions

    Kerry Barrett, the President, Business Advisory Solutions at Eliassen Group, leads the strategic consulting division focused on business transformation. Barrett directs the development and delivery of advisory services that help clients navigate complex organizational changes and improve operational performance. By identifying market opportunities for business consulting, the President, Business Advisory Solutions ensures the firm remains at the forefront of industry trends. This role involves managing a team of consultants to deliver tailored solutions that address specific client challenges in IT and business strategy. Kerry Barrett fosters strong client relationships, ensuring that advisory services consistently drive measurable value and exceptional outcomes. The President, Business Advisory Solutions collaborates with other executive leaders to integrate advisory capabilities with the firm's broader service offerings. Through the leadership of this division, Barrett expands the company's influence in the consulting market and supports the achievement of long-term strategic goals for diverse clients.
    Kerry Barrett

    Taz Stephens - Life Sciences Solutions President, Technology

    Taz Stephens, the Life Sciences Solutions President, Technology at Eliassen Group, oversees the specialized technology consulting services tailored for the life sciences sector. Stephens directs the implementation of digital solutions that enable pharmaceutical and biotech companies to accelerate research and development. By focusing on the unique technological requirements of this industry, the Life Sciences Solutions President, Technology ensures that the firm provides highly relevant and impactful consulting services. This role involves managing technical teams to deliver scalable IT infrastructure and data management solutions. Taz Stephens collaborates with clients to understand their specific operational challenges, providing the expertise needed to drive innovation in a highly regulated environment. The Life Sciences Solutions President, Technology monitors industry advancements to ensure the firm's service offerings remain cutting-edge. Through this targeted leadership, Stephens supports the company's growth in the life sciences market and ensures the delivery of high-quality technology solutions that drive significant business outcomes.

    Christine Luke - Chief of Staff

    Christine Luke, the Chief of Staff at Eliassen Group, coordinates cross-functional initiatives to ensure seamless execution of corporate strategy. Luke facilitates communication between executive leadership and operational teams, streamlining decision-making processes across the organization. By managing high-priority projects, the Chief of Staff drives alignment with the company's mission to provide top-tier business and IT consulting services. This role involves overseeing internal workflows to maximize efficiency and productivity. Christine Luke monitors the progress of key strategic objectives, providing the necessary support to keep departments focused on client-centric outcomes. The Chief of Staff acts as a central point of contact for organizational planning, ensuring that leadership priorities translate into actionable tasks. Through meticulous management of corporate operations, Luke enhances the firm's ability to respond to market demands. This position remains vital for maintaining organizational cohesion and supporting the rapid scaling of consulting services across diverse industry sectors.

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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 Mark Hafeli (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), Mark Hafeli (Chief Financial Officer), Delores Lenzy-Jones (Chief Financial Officer & Partner) and other senior executives.
    How many executives does Eliassen Group have?
    Eliassen Group has 9 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 & General Counsel, Chief Operating Officer.