SEH Executive and Leadership Team

August, 2026

Leadership Overview

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

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

Leadership Roles at SEH

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

    Steven Peterson, the President, Seh Design Build Inc at SEH, directs the integrated project delivery services that combine engineering, architecture, and construction management. Overseeing the execution of complex building and infrastructure projects, the President, Seh Design Build Inc ensures seamless coordination between design teams and field operations. This leadership role involves managing risk, budget adherence, and schedule performance for industrial and commercial clients. By streamlining the design-build process, Steven Peterson enhances project efficiency and reduces delivery timelines for critical energy and transportation assets. The President, Seh Design Build Inc collaborates with other executive leaders to expand the firm's footprint in the design-build market. Through rigorous quality control and safety standards, Peterson maintains the firm's reputation for technical precision. This operational focus supports the company's mission to provide comprehensive solutions that address the multifaceted challenges of modern infrastructure development across the country.

    Sandra Harrilal - President

    Sandra Harrilal, the President at SEH, directs the overall strategic vision and operational performance of the professional services firm. Overseeing the diverse portfolio of engineering, planning, and environmental projects, the President ensures the company maintains its leadership position in the water, wastewater, and infrastructure markets. This leadership role involves guiding the executive team to achieve sustainable growth while upholding the firm's employee-owned values. By fostering strong relationships with government and commercial clients, Sandra Harrilal drives business development and market expansion efforts. The President coordinates with the Board to set long-term objectives that prioritize innovation and technical excellence. Through the oversight of regional operations, Harrilal ensures consistent service delivery and project success across all sectors. This strategic leadership supports the firm's commitment to solving complex societal challenges through high-quality engineering and architectural solutions, ultimately securing the company's financial health and industry influence.

    William Kloster - Chief Information Officer & Principal

    William Kloster, the Chief Information Officer & Principal at SEH, directs the digital transformation and technological infrastructure supporting the firm's engineering and architectural operations. Managing complex data systems, the Chief Information Officer & Principal ensures secure, scalable connectivity across all regional offices. This leadership role involves integrating advanced software solutions to optimize project delivery for water, transportation, and energy clients. By modernizing internal workflows, William Kloster directly impacts the efficiency of the entire professional services team. The Chief Information Officer & Principal collaborates with the Board to align technology investments with long-term growth objectives. Through the implementation of robust cybersecurity protocols, Kloster protects critical infrastructure data. This strategic oversight enables the firm to maintain a competitive edge in the construction and design industry while supporting the diverse needs of industrial and commercial partners throughout the United States.

    Jackie Zamorano - Chief People Officer

    Jackie Zamorano, the Chief People Officer at SEH, architects the human capital strategy for an employee-owned firm comprised of engineers, planners, and scientists. Overseeing talent acquisition, professional development, and organizational culture, the Chief People Officer ensures the alignment of workforce capabilities with the evolving demands of the infrastructure and environmental markets. This leadership role involves fostering an inclusive environment that attracts top-tier technical talent to support complex building and transportation projects. By implementing comprehensive performance management systems, Jackie Zamorano drives employee engagement and retention across the organization. The Chief People Officer works closely with executive leadership to cultivate a high-performance culture that reflects the firm's commitment to professional excellence. Through strategic workforce planning, Zamorano secures the human resources necessary to execute large-scale projects for government and commercial clients, ultimately strengthening the firm's market position as a premier provider of professional services.

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    Frequently Asked Questions Regarding SEH Top Executives and Leadership Team

    Who leads SEH?
    SEH is led by Steven Peterson (President, Seh Design Build Inc), along with executives such as Sandra Harrilal (President) and William Kloster (Chief Information Officer & Principal).
    Who is part of SEH’s executive team?
    The executive team of SEH includes leaders such as Steven Peterson (President, Seh Design Build Inc), Sandra Harrilal (President), 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, Seh Design Build Inc, President, Chief Information Officer & Principal, Chief People Officer.