Process Engineer Internship Jobs in Denver, CO (NOW HIRING)

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.

AECOM’s Water Business Line is seeking an Entry-Level Water/Wastewater Process Engineer to join our Denver, Colorado office. In this role, you will contribute to multidisciplinary teams that partner with public and private clients to plan and deliver solutions across drinking water and wastewater treatment. The ideal candidate will demonstrate strong technical skills, a collaborative mindset, and a commitment to delivering high-quality solutions for our clients.

This position is expected to begin ASAP.

The responsibilities of this position include, but are not limited to:

• Support planning and design tasks for water and wastewater treatment facilities.
• Assist with engineering calculations and technical evaluations
• Support preparation of deliverables such as technical memoranda, basis of design documentation, reports, and presentations.
• Contribute to development of design packages including drawings coordination, specifications, and opinions of probable cost (under supervision).
• Coordinate with multidisciplinary teams to align treatment needs with overall facility design.
• Review and organize project data (water quality, operational data, field observations) and summarize findings clearly.

Minimum Requirements

• BA/BS in Civil Engineering, Environmental Engineering, Chemical Engineering, or related field of study + None or demonstrated equivalency of experience and/or education.

Preferred Qualifications

• Engineer-in-Training (EIT) certification, or the ability to obtain within 12 months.
• Familiarity with tools such as AutoCAD, Excel, Revit, and/or GIS.
• Coursework familiarity with treatment fundamentals (filtration, disinfection, treatment).
• Previous Internship/co-op experience in water/wastewater.
• Strong verbal and written communication skills.

•  Sponsorship is not available for this role.
• Relocation assistance is not available for this role.
• Some travel may be required to support regional projects and client meetings.

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.