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.
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
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.
Explore Leadership Teams in Architecture, Engineering & Design
Founded in 1949, Thornton Tomasetti is headquartered in New York City, New York. They provide engineering design, investigation and analysis services to clients worldwide on projects of every size.
Company Leadership

JD
RZ
SOCOTEC US provides testing, inspection, certification (TIC), engineering consulting, geotechnical engineering, building envelope consulting, fire and life safety, code advisory, sustainability, and specialty engineering services. The company supports clients across the full asset lifecyclefrom design and construction through operation and risk managementwith a focus on building integrity, safety, and compliance.
Company Leadership KL
AM
Genesis AEC, Inc. is a full-service Architecture, Engineering, and Construction Management, Commissioning and Validation firm with 25 years of experience in the Life Sciences industry. Its staff is dedicated to delivering quality results for technically driven projects in compliance driven industries. Genesis is owned and managed by industry professionals committed to the success of its clients. The company is firmly committed to meet the needs and requirements of clients to help support them in achieving their goals.
Company Leadership KR


AM
At Stellar Energy, we deliver custom energy solutions. By avoiding an off-the-shelf approach, our solutions more effectively help our clients increase their profitability, enhance their power output and cost-effectively cool their environments and industrial processes. While we often may use a modular approach by prepackaging complete utility plants, we understand that each client and project is unique, and other methods may be preferred to meet our clients' needs. Through detailed feasibility analysis, we can determine the most process-, cost-, and energy-efficient solution, whether it's modular, field-erected or hybrid (a combination of both).
Company Leadership MV
GS
MJ
BT