Senior Mechanical Engineering Subject Matter Expert

The Opportunity:   

Tetra Tech is adding a Senior Mechanical Engineering Subject Matter Expert to our Infrastructure Design Team. This position is open for remote work within the United States.  This position is available on a part-time, variable hours basis, up to 24 hours per week.

Why Tetra Tech:   

At Tetra Tech, we are Leading with Science to solve the world’s most complex challenges. Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world. For 60 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy, and international development. Our work has improved more than 625 million lives around the world.   

Your Impact:   

Join Tetra Tech to make a real difference.  Our work leverages cutting-edge technologies, advanced analytics, and the expertise of world-class scientists and engineers to create meaningful change around the world. Discover your full potential – join us to advance your career while leaving a lasting legacy.  

Position Summary:  

As a Senior Mechanical Engineering Subject Matter Expert for our Infrastructure Design Center, you will analyze and troubleshoot existing mechanical systems and assist in development of drawings and specifications for hydraulic power units, gates, valves, bulkheads, pumps, piping, cranes, hoists, and related equipment. Projects often involve hydroelectric facilities, dams, navigation locks, fish passage, flood control, and port infrastructure. Join our multidisciplinary team to lead signature infrastructure programs - shaping solutions and advancing your career.  

Essential Job Functions: 

The following duties are essential to this role. Reasonable accommodations will be made to enable individuals with disabilities to perform these functions. 

• Provide senior technical leadership and final technical sign‑off; resolve complex technical issues and act as a technical point of contact. 

• Review engineering deliverables—drawings, calculations, specifications—to ensure accuracy, completeness, and compliance with codes, standards, regulations, and company procedures. 

• Review mechanical equipment selection, sizing, and specifications to meet performance, technical, and budget requirements. 

• Follow design quality‑control processes. 

• Adhere to company health, safety, and environmental policies across projects. 

Required Qualifications:   

• Bachelor’s degree in Mechanical Engineering. 

• A minimum of 20 years of professional experience in mechanical engineering. 

• Demonstrated experience in the design and analysis of mechanical equipment and systems for water resources and navigation structures (e.g., hydraulic power units, gates, valves, bulkheads, pumps, piping, cranes, hoists). 

• Active Professional Engineer (PE) registration in Mechanical Engineering. 

• Proven experience directing engineering teams in the development of construction documents, specifications, technical reports, and design deliverables. 

• Strong working knowledge of industry codes and standards (e.g., ASME, ASTM, NEMA). 

• Experience in stress analysis and structural mechanics.  

• Excellent analytical, written, and verbal communication skills, demonstrated through professional experience and technical deliverables. 

• Ability to use Microsoft products such as Word, Excel, Teams and Project. 

Preferred Qualifications:   

• Master’s degree in Mechanical Engineering or related field. 

• Experience with dams, navigation locks, fish passage facilities, flood control structures, hydroelectric facilities, and/or port facilities. 

• Understanding of U.S. Army Corps of Engineers (USACE) design standards and practices. 

Physical Requirements:   

• Ability to sit at a workstation and use a computer for extended periods of time (up to 8 hours/day). Additional hours may be required based on project needs. 

• Manual dexterity to use a computer mouse, keyboard, and other tools. 

• Visual acuity to read and interpret detailed drawings and technical documents. 

• Ability to communicate effectively in-person and via electronic means. 

Life at Tetra Tech:   

The perks of working at Tetra Tech include:    

• Comprehensive and market-competitive benefits.   

• Merit-based financial rewards.   

• Employee stock purchase program. 

• Flexibility and company-wide commitment to work/life balance.   

• Collaborative team atmosphere that values the contributions of all employees.   

• Learning and development opportunities for ongoing professional growth.