S&ME Executive and Leadership Team

July, 2026

Leadership Overview

S&ME has 10 executives leading key functions including strategy, finance, operations, human resources, and board governance.

Driven by technical excellence, S&ME is dedicated to providing comprehensive engineering solutions that support sustainable development and infrastructure projects across North America.

Leadership Roles at S&ME

  • Chief Executive Officer - Gabriel Onyeukwu
  • Founder & Chief Executive Officer - John Sullivan
  • Chief Financial Officer - Rachel Tzortzis
  • Chief Financial Officer & Controller - Joel Sofranko
  • Chief Operating Officer - Arnaldo Alves
  • Acting President & President, Elect For 2027 Society of Manufacturing Engineers Sv 98 - Elise Engelhardt
  • President & Chair, Board of Directors - Stewart Laney
  • President - Vincent Howell
  • Chief People Officer - Daniel Houston
  • Chief Administrative Officer - Scott Smith
  • Gabriel Onyeukwu - Chief Executive Officer

    Gabriel Onyeukwu, the Chief Executive Officer at S&ME, directs the overarching corporate strategy and market positioning for the construction and architecture engineering firm. Onyeukwu guides the company's expansion across its 30+ offices in 10 states, ensuring alignment with S&ME's mission of delivering expert consulting services and technical excellence. This leadership role involves fostering innovation in geotechnical, environmental, civil, and construction engineering solutions. Gabriel Onyeukwu drives the company's commitment to supporting sustainable development and infrastructure projects, leveraging decades of experience to enhance S&ME's reputation for scientific analysis and engineering design. The Chief Executive Officer's focus remains on strengthening S&ME's impact in communities through advanced engineering practices and technical expertise in construction-related fields.

    John Sullivan - Founder & Chief Executive Officer

    John Sullivan, the Founder & Chief Executive Officer at S&ME, provides foundational leadership and strategic direction for the firm's comprehensive technical services. Sullivan's role encompasses guiding the company's long-term vision, building upon its establishment in 1973 to ensure continued growth and market leadership in construction and architecture engineering. The Founder & Chief Executive Officer oversees the integration of S&ME's specialized geotechnical, environmental, civil, and construction engineering solutions across its extensive network of offices. John Sullivan champions the company's dedication to delivering expert consulting and technical excellence, driving initiatives that support sustainable development and infrastructure projects. This leadership ensures S&ME maintains its commitment to innovative engineering and technical expertise in construction.

    Rachel Tzortzis - Chief Financial Officer

    Rachel Tzortzis, the Chief Financial Officer at S&ME, manages the firm's financial operations and strategic fiscal planning across its 30+ offices. Tzortzis oversees all aspects of financial reporting, budgeting, and investment, ensuring the economic health and sustainability of the construction and architecture engineering services. The Chief Financial Officer plays a critical part in resource allocation for geotechnical, environmental, civil, and construction engineering projects, supporting S&ME's delivery of expert consulting and technical excellence. Rachel Tzortzis drives financial strategies that enable the company to pursue innovative engineering solutions and maintain its commitment to sustainable development. This leadership ensures robust financial oversight for infrastructure projects and environmental management initiatives.
    Rachel Tzortzis

    Joel Sofranko - Chief Financial Officer & Controller

    Joel Sofranko, the Chief Financial Officer & Controller at S&ME, oversees the financial integrity and control mechanisms for the firm's extensive operations. Sofranko manages accounting practices, financial reporting, and internal controls, ensuring compliance and accuracy across all construction and architecture engineering services. The Chief Financial Officer & Controller plays a vital role in managing financial resources for geotechnical, environmental, civil, and construction engineering projects, supporting S&ME's delivery of expert consulting and technical excellence. Joel Sofranko implements financial strategies that enhance the company's capacity for innovative engineering solutions and sustainable development initiatives. This leadership ensures rigorous financial oversight for infrastructure and environmental management projects.

    Arnaldo Alves - Chief Operating Officer

    Arnaldo Alves, the Chief Operating Officer at S&ME, directs the operational execution of the company's comprehensive technical services across its 10-state presence. Alves oversees the day-to-day management of S&ME's 30+ offices, ensuring efficient delivery of geotechnical, environmental, civil, and construction engineering solutions. The Chief Operating Officer is responsible for optimizing workflows and resource deployment to uphold S&ME's standards of expert consulting and technical excellence in infrastructure development. Arnaldo Alves drives operational improvements that support sustainable development and environmental management projects, ensuring seamless integration of scientific analysis and engineering design. This leadership role is crucial for maintaining S&ME's commitment to innovative engineering and technical expertise in construction.

    Elise Engelhardt - Acting President & President, Elect For 2027 Society of Manufacturing Engineers Sv 98

    Elise Engelhardt, the Acting President & President, Elect For 2027 Society of Manufacturing Engineers Sv 98 at S&ME, provides leadership focused on strategic initiatives and industry engagement. Engelhardt's role involves guiding key projects and fostering external relationships that enhance S&ME's market presence in construction and architecture engineering. The Acting President & President, Elect For 2027 Society of Manufacturing Engineers Sv 98 contributes to the firm's commitment to technical excellence and innovation in geotechnical, environmental, civil, and construction engineering. Elise Engelhardt supports the company's mission of delivering expert consulting services and driving sustainable development. This leadership position ensures S&ME remains at the forefront of industry advancements and technical expertise.

    Stewart Laney - President & Chair, Board of Directors

    Stewart Laney, the President & Chair, Board of Directors at S&ME, provides high-level governance and strategic oversight for the firm's operations. Laney leads the Board in setting corporate direction and ensuring accountability across all construction and architecture engineering services. The President & Chair, Board of Directors guides S&ME's commitment to delivering expert consulting and technical excellence in geotechnical, environmental, civil, and construction engineering. Stewart Laney champions the company's dedication to supporting sustainable development and infrastructure projects, ensuring adherence to the highest standards of scientific analysis and engineering design. This leadership role is pivotal in maintaining S&ME's long-term vision and market impact.

    Vincent Howell - President

    Vincent Howell, the President at S&ME, directs specific operational divisions and strategic growth areas within the construction and architecture engineering firm. Howell oversees key business units, ensuring the effective delivery of geotechnical, environmental, civil, and construction engineering solutions across its extensive network. The President drives initiatives focused on enhancing S&ME's expert consulting capabilities and technical excellence in infrastructure development. Vincent Howell champions the company's commitment to innovative engineering and sustainable development, ensuring projects meet rigorous standards for environmental management. This leadership role is integral to S&ME's ongoing success and expansion in technical services.

    Daniel Houston - Chief People Officer

    Daniel Houston, the Chief People Officer at S&ME, leads human capital strategy and organizational development across the firm's 30+ offices. Houston oversees talent acquisition, employee engagement, and professional development programs, ensuring S&ME cultivates a skilled workforce for its construction and architecture engineering services. The Chief People Officer drives initiatives that foster a culture of technical excellence and collaboration, supporting the delivery of geotechnical, environmental, civil, and construction engineering solutions. Daniel Houston champions programs that enhance employee well-being and professional growth, aligning human resources with the company's commitment to innovative engineering and sustainable development. This leadership ensures S&ME attracts and retains top talent for infrastructure and environmental projects.

    Scott Smith - Chief Administrative Officer

    Scott Smith, the Chief Administrative Officer at S&ME, manages the essential administrative functions that support the company's broad technical services. Smith oversees facilities management, procurement, and operational support systems across S&ME's 10-state footprint, ensuring seamless operations for its construction and architecture engineering teams. The Chief Administrative Officer ensures efficient resource utilization and operational readiness, contributing to the delivery of geotechnical, environmental, civil, and construction engineering solutions. Scott Smith drives administrative efficiencies that enable S&ME to focus on providing expert consulting and technical excellence. This leadership role is critical for maintaining the company's commitment to innovative engineering and supporting sustainable development projects.

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    Frequently Asked Questions Regarding S&ME Top Executives and Leadership Team

    Who leads S&ME?
    S&ME is led by Gabriel Onyeukwu (Chief Executive Officer), along with executives such as John Sullivan (Founder & Chief Executive Officer) and Rachel Tzortzis (Chief Financial Officer).
    Who is part of S&ME’s executive team?
    The executive team of S&ME includes leaders such as Gabriel Onyeukwu (Chief Executive Officer), John Sullivan (Founder & Chief Executive Officer), Rachel Tzortzis (Chief Financial Officer) and other senior executives.
    How many executives does S&ME have?
    S&ME has 10 executives leading key business areas.
    What roles are included in S&ME’s leadership team?
    The leadership team of S&ME includes roles such as Chief Executive Officer, Founder & Chief Executive Officer, Chief Financial Officer, Chief Financial Officer & Controller, Chief Operating Officer.