Tetra Tech Executive and Leadership Team

Roger Argus, the Chief Executive Officer at Tetra Tech, directs the overarching corporate strategy and global operational vision. This leadership role involves guiding the firm through complex environmental and infrastructure projects across North America, Europe, Asia, Australia, and the Middle East. By aligning engineering design with sustainable resource management, the Chief Executive Officer ensures consistent growth for government and industrial clients. Roger Argus maintains rigorous standards for construction management and scientific research, fostering a culture of technical excellence. The Chief Executive Officer collaborates with the Board to optimize market positioning and long-term value creation. Through decisive management of diverse operating units, the Chief Executive Officer secures the firm's status as a leader in water and energy solutions. This executive oversight remains critical for navigating the evolving demands of global climate change consulting and environmental restoration initiatives.

Steven Burdick, the Executive VP & Chief Financial Officer at Tetra Tech, manages the fiscal health and capital allocation strategies for the entire organization. Overseeing financial reporting, risk management, and investor relations, the Executive VP & Chief Financial Officer ensures the firm maintains a robust balance sheet to support large-scale infrastructure projects. Steven Burdick drives financial discipline across all operating units, enabling the company to pursue strategic acquisitions and technological investments. This leadership role involves coordinating with the executive team to monitor project profitability and operational efficiency on a global scale. By implementing advanced financial modeling, the Executive VP & Chief Financial Officer provides the necessary data to support sustainable growth in water and energy sectors. The Executive VP & Chief Financial Officer maintains transparency with stakeholders while optimizing the cost structure to enhance competitive advantages in international markets.

Steve Ruffing, the President & Program Manager, Operating Unit at Tetra Tech, executes large-scale program delivery and operational oversight for critical infrastructure projects. Managing the day-to-day performance of the operating unit, the President & Program Manager, Operating Unit ensures that engineering design and construction management services meet the highest quality standards. Steve Ruffing drives the implementation of sustainable solutions for complex environmental challenges, focusing on resource management and civil infrastructure planning. This leadership role involves coordinating cross-functional teams to deliver projects on time and within budget for government agencies. By fostering technical innovation, the President & Program Manager, Operating Unit enhances the firm's reputation for reliability and excellence. The President & Program Manager, Operating Unit maintains strong client relationships, ensuring that every project aligns with the broader corporate goal of providing impactful, long-term environmental restoration and energy solutions.

Emile Shehata, the President, Operating Unit (Iae) at Tetra Tech, directs specialized engineering and infrastructure services within the Iae division. Overseeing the delivery of complex projects, the President, Operating Unit (Iae) ensures that technical teams provide high-value solutions for water resources and civil infrastructure. Emile Shehata drives operational efficiency by integrating scientific research with practical construction management techniques. This leadership role involves managing regional resources to support the firm's global footprint, particularly in areas requiring advanced environmental restoration. By prioritizing sustainable practices, the President, Operating Unit (Iae) helps clients navigate regulatory requirements and climate change challenges. The President, Operating Unit (Iae) collaborates with other division leaders to share best practices and leverage the firm's collective expertise. Through consistent project delivery, the President, Operating Unit (Iae) strengthens the company's market position in the competitive engineering and consulting landscape.

Meegan Sullivan, the Division President (Asia Pacific) at Tetra Tech, leads all business operations and strategic growth initiatives across the Asia Pacific region. Overseeing a diverse portfolio of water, environment, and infrastructure projects, the Division President (Asia Pacific) ensures that local teams deliver high-quality consulting and engineering services. Meegan Sullivan drives market expansion by identifying new opportunities in resource management and energy solutions. This leadership role involves managing regional talent and fostering partnerships with government and industrial clients. By adapting global best practices to local market needs, the Division President (Asia Pacific) enhances the firm's operational impact in the region. The Division President (Asia Pacific) coordinates with corporate leadership to align regional activities with the company's overarching mission of providing sustainable solutions. Through strategic oversight, the Division President (Asia Pacific) secures the firm's growth and reputation in the Asia Pacific market.

Jeannelle Blanchard, the President, Operating Unit at Tetra Tech, manages the strategic direction and project execution for a key operating unit focused on environmental and infrastructure services. Overseeing the delivery of comprehensive engineering design and waste management solutions, the President, Operating Unit ensures that all project outcomes meet client expectations. Jeannelle Blanchard drives operational excellence by optimizing resource allocation and promoting technical innovation within the unit. This leadership role involves managing complex environmental restoration projects and ensuring compliance with safety and quality standards. By fostering a collaborative environment, the President, Operating Unit enables teams to solve intricate challenges related to water resources and civil infrastructure. The President, Operating Unit maintains a focus on sustainable growth, ensuring that the unit contributes effectively to the firm's global mission. Through dedicated leadership, the President, Operating Unit supports the company's commitment to delivering high-impact, science-based solutions.

Andrew Bolt, the President & Tetra Ec, Inc Technician at Tetra Tech, oversees specialized technical services and operational management for the Tetra Ec division. Directing the application of advanced scientific research and environmental restoration techniques, the President & Tetra Ec, Inc Technician ensures that technical outputs remain at the forefront of the industry. Andrew Bolt drives the integration of specialized engineering solutions for waste management and resource conservation. This leadership role involves managing technical staff and ensuring that all field operations adhere to rigorous environmental standards. By combining technical expertise with strategic management, the President & Tetra Ec, Inc Technician delivers high-value results for complex infrastructure projects. The President & Tetra Ec, Inc Technician collaborates with other operating units to leverage the firm's broad capabilities. Through precise technical oversight, the President & Tetra Ec, Inc Technician supports the company's mission to provide sustainable, science-driven solutions for global clients.

Olivier Jeannot, the Division President, Federal Information Technology at Tetra Tech, leads the delivery of advanced IT solutions and data management services for federal government clients. Overseeing the development of secure information systems, the Division President, Federal Information Technology ensures that federal agencies receive reliable support for their complex infrastructure and environmental data needs. Olivier Jeannot drives the implementation of cutting-edge technology to improve project efficiency and decision-making. This leadership role involves managing large-scale IT programs and ensuring compliance with federal security standards. By integrating data collection and monitoring capabilities, the Division President, Federal Information Technology enhances the firm's ability to provide actionable insights for environmental restoration and resource management. The Division President, Federal Information Technology collaborates with other divisions to provide a unified, technology-enabled service offering. Through strategic leadership, the Division President, Federal Information Technology strengthens the firm's position as a trusted partner for federal government IT initiatives.

Jan Auman, the President & Senior Vice President, International Development Services at Tetra Tech, directs the firm's international development portfolio, focusing on sustainable infrastructure and resource management in emerging markets. Overseeing global programs that address water security, energy access, and environmental resilience, the President & Senior Vice President, International Development Services ensures that projects deliver long-term social and economic benefits. Jan Auman drives the expansion of international operations by building strong relationships with global development agencies and local partners. This leadership role involves managing complex, multi-year programs that require deep expertise in civil infrastructure and environmental restoration. By aligning international efforts with the company's core mission, the President & Senior Vice President, International Development Services promotes sustainable development on a global scale. The President & Senior Vice President, International Development Services coordinates with other executives to leverage the firm's global resources, ensuring that international projects benefit from the company's collective technical knowledge.

Craig Christensen, the Senior VP & Chief Information Officer at Tetra Tech, architects the digital infrastructure and data management systems essential for global engineering operations. Overseeing the integration of information technology with scientific research and construction management, the Senior VP & Chief Information Officer ensures secure, scalable platforms for all project teams. Craig Christensen drives the adoption of advanced data collection and monitoring tools, which directly improve the accuracy of environmental restoration and infrastructure planning. This leadership role involves protecting the firm's intellectual property and digital assets against emerging cyber threats. By modernizing internal workflows, the Senior VP & Chief Information Officer enhances collaboration across international offices. The Senior VP & Chief Information Officer supports the company's mission by providing the technological foundation required to deliver complex, data-driven solutions for government and commercial clients worldwide.