Syska Hennessy Group Executive and Leadership Team

August, 2026

Leadership Overview

Syska Hennessy Group has 6 executives leading key functions including administrative strategy, executive leadership, marketing, human resources, financial management, and legal counsel.

Focused on engineering excellence, Syska Hennessy Group delivers comprehensive MEP, information technology, and commissioning solutions to government and commercial clients while maintaining a commitment to high-performance building design.

Leadership Roles at Syska Hennessy Group

  • Executive Administrator To President and Chief Executive Officer - Diane Oleski
  • President & Chief Executive Officer - Cyrus Izzo
  • Chief Financial Officer & Associate Partner - Darren Alfano
  • Chief Marketing Officer - Michelle Guilbeault
  • Chief Human Resources Officer - Patricia Dreste
  • General Counsel - Anjanette Bobrow
  • Diane Oleski - Executive Administrator To President and Chief Executive Officer

    Diane Oleski, the Executive Administrator To President and Chief Executive Officer at Syska Hennessy Group, manages complex scheduling and operational workflows for the executive office. By coordinating high-level communications between the President and internal department heads, Oleski ensures seamless execution of corporate initiatives. This role involves prioritizing critical business inquiries and facilitating efficient decision-making processes across the organization. Diane Oleski maintains rigorous standards for administrative excellence, supporting the firm's mission to provide top-tier engineering services. Through meticulous oversight of executive priorities, the Executive Administrator To President and Chief Executive Officer enables the leadership team to focus on long-term growth and market expansion. The position requires constant alignment with the firm's strategic goals, ensuring that all administrative functions support the broader objectives of the engineering practice. By streamlining daily operations, the Executive Administrator To President and Chief Executive Officer contributes directly to the overall productivity of the firm.

    Cyrus Izzo - President & Chief Executive Officer

    Cyrus Izzo, the President & Chief Executive Officer at Syska Hennessy Group, directs the firm's overarching strategy for MEP and information technology engineering. Overseeing national operations, Izzo drives the company's commitment to high-performance building design and sustainable infrastructure solutions. This leadership role involves setting the vision for market expansion across government and commercial sectors while ensuring operational excellence. Cyrus Izzo fosters a culture of innovation, guiding the firm through complex engineering challenges and evolving industry standards. By aligning technical capabilities with client needs, the President & Chief Executive Officer secures the firm's position as a leader in the engineering field. The President & Chief Executive Officer maintains strong relationships with key stakeholders and partners, ensuring the long-term financial and operational health of the organization. Through strategic oversight, Izzo ensures that every project reflects the firm's dedication to quality and technical precision.
    Cyrus Izzo

    Darren Alfano - Chief Financial Officer & Associate Partner

    Darren Alfano, the Chief Financial Officer & Associate Partner at Syska Hennessy Group, directs the firm's financial planning, reporting, and risk management strategies. By overseeing capital allocation and project budgeting, Alfano ensures the financial stability required for large-scale engineering operations. This role involves analyzing fiscal performance to support strategic decision-making and long-term growth initiatives. Darren Alfano collaborates with the executive team to maintain profitability across all service lines, including MEP and commissioning engineering. The Chief Financial Officer & Associate Partner manages relationships with financial institutions and ensures compliance with regulatory standards. Through rigorous financial oversight, the Chief Financial Officer & Associate Partner optimizes resource utilization and supports the firm's competitive position in the market. By providing accurate financial insights, the Chief Financial Officer & Associate Partner enables the leadership team to execute projects with precision and maintain the firm's reputation for fiscal responsibility.
    Darren Alfano

    Michelle Guilbeault - Chief Marketing Officer

    Michelle Guilbeault, the Chief Marketing Officer at Syska Hennessy Group, architects the firm's brand identity and market positioning strategies. By developing targeted campaigns for the commercial and government sectors, Guilbeault expands the company's reach across North American markets. This role involves managing corporate communications, digital presence, and business development support to drive revenue growth. Michelle Guilbeault collaborates with technical teams to translate complex engineering services into compelling value propositions for diverse clients. The Chief Marketing Officer ensures that the firm's reputation for excellence remains prominent in the competitive landscape of MEP and commissioning engineering. By analyzing market trends and client feedback, the Chief Marketing Officer refines outreach efforts to capture new opportunities. Through strategic brand management, the Chief Marketing Officer strengthens the firm's market presence and supports the overall growth objectives established by the executive leadership team.

    Patricia Dreste - Chief Human Resources Officer

    Patricia Dreste, the Chief Human Resources Officer at Syska Hennessy Group, manages talent acquisition, employee development, and organizational culture. By implementing robust recruitment strategies, Dreste ensures the firm attracts top-tier engineering talent to support complex MEP and technology projects. This role involves overseeing performance management systems and fostering an inclusive work environment that promotes professional growth. Patricia Dreste aligns human capital initiatives with the firm's strategic goals, ensuring that the workforce remains equipped to handle evolving industry demands. The Chief Human Resources Officer collaborates with other C-suite leaders to optimize organizational structure and improve operational efficiency. Through the development of comprehensive training programs, the Chief Human Resources Officer enhances the technical and leadership capabilities of the staff. By prioritizing employee engagement and retention, the Chief Human Resources Officer sustains the high-performance culture necessary for the firm's continued success in the engineering sector.
    Patricia Dreste

    Anjanette Bobrow - General Counsel

    Anjanette Bobrow, the General Counsel at Syska Hennessy Group, manages all legal affairs, contract negotiations, and risk mitigation strategies for the firm. By providing expert guidance on regulatory compliance and corporate governance, Bobrow protects the company's interests in complex engineering projects. This role involves reviewing project agreements and ensuring that all operations adhere to industry standards and legal requirements. Anjanette Bobrow collaborates with the executive team to address potential liabilities and resolve disputes efficiently. The General Counsel ensures that the firm's contractual frameworks support successful project delivery across government and commercial sectors. Through proactive legal strategy, the General Counsel minimizes operational risks and supports the firm's commitment to ethical business practices. By maintaining a deep understanding of the legal landscape, the General Counsel provides the necessary foundation for the firm to pursue innovative engineering solutions while maintaining full compliance with all applicable laws.

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    Frequently Asked Questions Regarding Syska Hennessy Group Top Executives and Leadership Team

    Who leads Syska Hennessy Group?
    Syska Hennessy Group is led by Diane Oleski (Executive Administrator To President and Chief Executive Officer), along with executives such as Cyrus Izzo (President & Chief Executive Officer) and Darren Alfano (Chief Financial Officer & Associate Partner).
    Who is part of Syska Hennessy Group’s executive team?
    The executive team of Syska Hennessy Group includes leaders such as Diane Oleski (Executive Administrator To President and Chief Executive Officer), Cyrus Izzo (President & Chief Executive Officer), Darren Alfano (Chief Financial Officer & Associate Partner) and other senior executives.
    How many executives does Syska Hennessy Group have?
    Syska Hennessy Group has 6 executives leading key business areas.
    What roles are included in Syska Hennessy Group’s leadership team?
    The leadership team of Syska Hennessy Group includes roles such as Executive Administrator To President and Chief Executive Officer, President & Chief Executive Officer, Chief Financial Officer & Associate Partner, Chief Marketing Officer, Chief Human Resources Officer.