Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

We are seeking an Environmental Engineer III to join our Portland, Oregon office. The successful candidate brings strong technical depth in environmental investigations and remediation, demonstrated ownership of tasks and subprojects, and a track record of mentoring staff, coordinating multidisciplinary teams, and delivering high-quality work on time and on budget.

Responsibilities will include, but may not be limited to the following:

• Lead task and subproject execution for environmental investigation and remediation programs (soil, soil vapor, groundwater), working with minimal supervision and reporting to a Project Manager or Deputy Project Manager.
• Plan and perform remediation system operation, maintenance, optimization, and monitoring; develop O&M plans and troubleshoot performance issues.
• Develop scopes, schedules, and budgets; track progress and variances; support change management and forecasting.
• Coordinate and oversee subcontractors and field/support staff; plan fieldwork logistics, health and safety, and quality control.
• Analyze field and laboratory data; prepare conceptual site models; perform routine to advanced engineering calculations and design analyses.
• Prepare clear, technically robust deliverables, including work plans, design drawings/specifications, remedial action plans, cost estimates, and technical reports.
• Support remedial design (e.g., SVE, AS, P&T, in-situ treatment) and construction phase services (submittal reviews, RFIs, field engineering, punch lists).
• Interface with clients and regulators; support meetings, presentations, and response-to-comments.
• Provide technical guidance and mentorship to junior engineers and scientists; perform QA/QC reviews.
• Champion health, safety, and quality practices; prepare JHAs/THAs and lead by example in the field.

Minimum Requirements

• BA/BS in Environmental Engineering or related field and a minimum 6 years of relevant experience or demonstrated equivalency of experience and/or education.  
• Valid driver’s license with ability to pass a Motor Vehicle Records (MVR) check per company policy.
• Successful candidate will have to pass a background check.
• Ability to frequently lift and carry up to 50 pounds with assistance during fieldwork and safely drive a full-size pickup truck.

Preferred Qualifications

• Master’s degree in Environmental Engineering or related field.
• 40-hour OSHA HAZWOPER and current 8-hour annual refresher (or ability to obtain prior to start).
• Proficiency in Microsoft Office and common field/data tools; strong technical writing and documentation skills.
• Professional Engineer (P.E.) license in Oregon, or ability to obtain within 6–12 months of hire; Washington P.E. is a plus.
• 8+ years of experience, including task leadership, client interaction, and regulatory coordination.
• Hands-on experience with soil and groundwater remediation systems (design, startup, O&M, optimization) and preparation of plans, specifications, and engineer’s cost estimates.
• Familiarity with Oregon DEQ cleanup programs and guidance; experience with Washington State Department of Ecology and Pacific Northwest regulatory frameworks.
• Demonstrated mentorship of junior staff; positive, proactive communicator willing to offer constructive suggestions to teams, subcontractors, clients, and regulators.
• Working knowledge of data management/visualization and modeling tools (e.g., Excel-based data workflows, GIS/EQuIS/graphics; groundwater or fate/transport modeling exposure a plus).

• Due to the nature of work and project sites, US Citizen or US Permanent Resident is required. Sponsorship now or in the future is not available.

At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

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 2025. 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.