SEH Executive and Leadership Team

September, 2026

Leadership Overview

SEH has 4 executives leading key functions including information technology, human resources, corporate strategy, and design-build operations.

Committed to engineering excellence, SEH delivers comprehensive professional services across water, infrastructure, and energy markets to drive sustainable development for government and commercial clients.

Leadership Roles at SEH

  • President - Sandra Harrilal
  • President, Seh Design Build Inc - Steven Peterson
  • Chief Information Officer & Principal - William Kloster
  • Chief People Officer - Jackie Zamorano
  • Sandra Harrilal - President

    Sandra Harrilal, the President at SEH, directs the overarching corporate strategy and operational execution for the professional services firm. Overseeing the delivery of engineering, planning, and environmental solutions, Harrilal ensures alignment with the long-term goals of government and commercial clients. This leadership role involves managing the financial health and market expansion efforts across the water, wastewater, and transportation sectors. By optimizing business processes, Sandra Harrilal drives sustainable growth and maintains the reputation of the firm for technical excellence. The President coordinates with the board and other executive leaders to navigate complex market dynamics and identify new opportunities in the energy and building markets. Through the oversight of large-scale infrastructure projects, Harrilal ensures that the firm consistently meets the rigorous demands of public and private sector partners. This strategic leadership supports the continued success of the organization as a premier provider of integrated professional services.

    Steven Peterson - President, Seh Design Build Inc

    Steven Peterson, the President, Seh Design Build Inc at SEH, directs the integrated project delivery model for the firm. Overseeing the design-build division, Peterson manages the seamless transition from conceptual planning to final construction for complex infrastructure and building projects. This leadership role involves coordinating multidisciplinary teams of architects and engineers to ensure project efficiency and cost-effectiveness for industrial clients. By streamlining the construction process, Steven Peterson minimizes risks and accelerates project timelines for critical energy and transportation developments. The President, Seh Design Build Inc collaborates with external stakeholders and internal departments to maintain high standards of quality and safety on every job site. Through the application of innovative construction methodologies, Peterson enhances the value proposition of the firm in the competitive design-build market. This operational focus ensures that the company delivers robust, functional, and sustainable solutions that meet the specific needs of diverse clients.

    William Kloster - Chief Information Officer & Principal

    William Kloster, the Chief Information Officer & Principal at SEH, directs the digital transformation strategy for the entire organization. Overseeing enterprise-wide technology infrastructure, Kloster ensures secure data management across all engineering and architectural projects. This leadership role involves implementing advanced software solutions to optimize project delivery for water, wastewater, and transportation clients. By modernizing internal systems, William Kloster improves operational efficiency and supports the collaborative efforts of engineers and scientists. The Chief Information Officer & Principal manages cybersecurity protocols to protect sensitive client information while facilitating seamless communication across regional offices. Through the integration of cutting-edge digital tools, Kloster enables the firm to maintain a competitive edge in the complex infrastructure market. This strategic focus on technology empowers the workforce to solve intricate design challenges with precision and speed, ultimately securing the long-term technical stability of the firm.

    Jackie Zamorano - Chief People Officer

    Jackie Zamorano, the Chief People Officer at SEH, architects the talent acquisition and professional development strategies for the employee-owned firm. Overseeing human capital initiatives, Zamorano fosters a culture of innovation among engineers, architects, and planners. This leadership role involves designing comprehensive training programs that align with the evolving needs of the energy and environmental sectors. By cultivating a diverse and highly skilled workforce, Jackie Zamorano drives organizational growth and ensures the retention of top-tier industry experts. The Chief People Officer collaborates with executive leadership to refine performance management systems and promote internal mobility across the company. Through the implementation of robust engagement strategies, Zamorano strengthens the commitment of staff to the mission of delivering high-quality infrastructure solutions. This focus on human capital development directly impacts the ability of the firm to execute complex projects for government and industrial clients across North American markets.

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    Frequently Asked Questions Regarding SEH Top Executives and Leadership Team

    Who leads SEH?
    SEH is led by Sandra Harrilal (President), along with executives such as Steven Peterson (President, Seh Design Build Inc) and William Kloster (Chief Information Officer & Principal).
    Who is part of SEH’s executive team?
    The executive team of SEH includes leaders such as Sandra Harrilal (President), Steven Peterson (President, Seh Design Build Inc), William Kloster (Chief Information Officer & Principal) and other senior executives.
    How many executives does SEH have?
    SEH has 4 executives leading key business areas.
    What roles are included in SEH’s leadership team?
    The leadership team of SEH includes roles such as President, President, Seh Design Build Inc, Chief Information Officer & Principal, Chief People Officer.