Sr. Water​/Wastewater Engineer

The Opportunity

Tetra Tech is adding a Senior Water/Wastewater Engineer to our Water team based in Denver, Colorado. This role provides an opportunity to serve as a technical leader on complex municipal wastewater projects while mentoring staff and supporting project delivery across planning, design, and construction phases.

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 over 50 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.

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.

The Senior Water/Wastewater Engineer serves as a technical lead on municipal wastewater projects, providing engineering review, oversight, and mentorship while ensuring quality, compliance, and cost‑effective project execution.

• Serve as Senior Engineer on a wide variety of municipal wastewater projects.
• Review conceptual and detailed design calculations and analyses.
• Review detailed engineering reports and supporting documents.
• Review construction drawings, specifications, and cost estimates.
• Ensure standard engineering practices and inclusion of appropriate documentation on reports and design projects.
• Develop and review engineering interpretations of specifications and drawings and recommend design modifications.
• Resolve technical questions and plan, coordinate, and execute work in a safe, timely, cost‑effective, and compliant manner.
• Provide mentorship and technical guidance to staff engineers.
• Provide construction support services, including field meetings, submittal reviews, shop drawing reviews, and RFIs.
• Perform other related duties as assigned.

• Bachelor's or Master's degree in Civil, Environmental, or Chemical Engineering with a focus on water/wastewater.
• Registration as a Professional Engineer in the State of Colorado.
• Minimum of 15 years of experience with water and wastewater treatment projects.
• Experience with jurisdictional and regulatory permitting.
• Excellent technical writing and communication skills.

• Design experience with pipe materials, valves, and pumps.
• Experience with hydraulic system calculations, pump stations, pressure pipelines, storm and sanitary sewer pipelines, and water/wastewater treatment plants.
• Previous experience in business development.
• Active membership and participation in professional organizations such as RMWEA or RMSAWWA.

• Ability to perform office‑based engineering work with occasional site visits to active construction or treatment facilities.
• Ability to sit, stand, and move between office and field environments for extended periods.
• Occasional lifting of light materials or equipment up to 25 pounds.

• Combination of office, client, and field environments.
• Occasional exposure to outdoor weather conditions during site visits.
• Moderate noise levels when visiting construction or treatment facilities.
• Use of appropriate personal protective equipment (PPE) as required.

• Employment Type:
  
  Full‑time.
• Work Location:
  
  Hybrid within the Denver, Colorado area.
• Travel Requirements:
  Occasional local or regional travel for meetings and site visits.

$ to $ annually, depending on experience and qualifications.

Applications accepted on a rolling basis.

• Comprehensive and market‑competitive benefits.
• Merit‑based financial rewards.
• Flexibility and company‑wide commitment to work/life balance.
• Collaborative team atmosphere that values the…