Principal Water-Wastewater Engineer

How will you make your mark?

At AECOM, our work in providing access to clean water enables communities to thrive and ecosystems to flourish, contributing to a resilient future. As a global leader in infrastructure consulting, we are at the forefront of significant water projects, with over 6,000 of the industry’s best minds driving innovation and technical excellence. Together, we develop solutions that are not only best in the world, but best for the world.

With an acceleration in infrastructure investment, your bold ideas and global expertise have never been more crucial. Join our dynamic team, where innovation, career growth, and collaboration are celebrated. Enjoy the freedom to grow with customizable career paths, water-specific technical and professional development and the potential to contribute to transformational projects worldwide.

Discover your #H2Opportunity

AECOM’s Water Business Line is seeking a highly motivated and experienced Principal Water/Wastewater Engineer with a passion for water and wastewater conveyance, treatment plant design, and infrastructure resiliency. This position offers an exceptional opportunity to contribute immediately to an established and successful Southern California water practice, delivering technically challenging and high-profile projects for regional and municipal clients.

Key Responsibilities

• Provide technical leadership on complex civil and water infrastructure projects from planning through permitting and construction.
• Offer technical guidance and mentorship to junior engineers and design staff.
• Lead and coordinate multi-disciplinary design teams, both locally and virtually.
• Manage civil, stormwater, and resiliency design projects.
• Oversee hydraulic modeling and design of water and wastewater conveyance systems.
• Review and prepare engineering reports, design drawings, technical specifications, and cost estimates.
• Lead the preparation of engineering proposals, fee estimates, and project schedules.
• Stay current with industry trends, design technologies, and regulatory developments.

Minimum Requirements

• Bachelor’s degree in Civil, Mechanical, or Environmental Engineering.
• 10+ years of relevant experience, or an equivalent combination of education and experience, with emphasis in water/wastewater or related fields.
• Registered Professional Engineer (PE) in California, or ability to obtain within 6 months of hire.
• Valid U.S. driver’s license and ability to pass AECOM’s Motor Vehicle Record (MVR) review.

Preferred Qualifications

• 18+ years of experience in the design, analysis, and management of municipal water, wastewater, and/or stormwater infrastructure projects, particularly within dense urban environments.
• In-depth knowledge of design codes, standards, and regulatory requirements for water/wastewater/stormwater projects.
• Proven leadership and communication skills for client, subconsultant, and agency coordination.
• Strong organizational and team collaboration skills.
• Demonstrated ability to independently solve engineering problems and make technical decisions.
• Excellent technical writing and report preparation skills.
• Experience preparing engineering deliverables including reports, drawings, specifications, and estimates.
• Track record of delivering resiliency, stormwater, and flood protection projects.

• Relocation assistance is not available for this position.
• Sponsorship for U.S. employment authorization is not available, now or in the future.
• Compensation will be determined based on the candidate’s location, experience, and qualifications.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2024. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.