Wastewater Process Engineer Jobs in Ontario (NOW HIRING)

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As part of our continued growth and success in the Southwestern Ontario municipal water market, AECOM is seeking a Water/Wastewater Process Engineering Graduate for a newly created position to be based in London, Ontario.

This role will work collaboratively with the Project Team on a variety of drinking water and wastewater projects, including treatment, pumping, storage, and related infrastructure through all project stages (planning and feasibility, design, construction, start-up and commissioning, and close-out). 

This position is expected to being in January or May 2027.

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

• Perform assignments requiring the application of standard engineering techniques, procedures, and criteria to support water and wastewater treatment projects.
• Undertake preliminary and detailed engineering design activities for water and wastewater infrastructure under the supervision of an experienced engineer (e.g., process design calculations, mass balances, hydraulic profiles, PFDs/P&IDs, layout sketches).
• Create designs, calculations, sketches, diagrams, schematic drawings, and final working drawings under the supervision of an experienced engineer.
• Assist with equipment selection and and coordination with suppliers and vendors, including technical reviews and comparison of alternatives.
• Prepare technical specifications, special provisions, and forms of tender.
• Collect, validate and analyze technical data (e.g., flow, loading, water quality) and assist with interpreting results to inform design.
• Use engineering software and tools to solve basic engineering problems (e.g., spreadsheets, CAD/model review, and entry-level process/hydraulic modeling).
• Coordinate design inputs and information exchanges with internal multidisciplinary teams; coordinate status, issues, and needs proactively. 
• Apply quality and safety procedures, participate in QA/QC reviews, and escalate complex issues or deviations for guidance. 
• Prepare concise technical memos and reports to support project deliverables.
• Assist with cost estimate developments; review estimates for completeness and accuracy.
• Assist with constructions services during the construction of water and wastewater infrastructure and facilities (e.g., submittal reviews, RFIs, shop drawings) and site inspections.
• Perform tasks in alignment with agreed scope, schedule, and budget, documenting assumptions and decisions. 
• Actively engage in professional development, training, and knowledge-sharing; show initiative in taking on new responsibilities as skills develop. 

Minimum Requirements:

• Bachelor’s Degree in Civil, Environmental, or Chemical Engineering or other related field.
• Valid driver’s license and ability to travel for site visits, as needed.
• Strong interpersonal, organizational, and communication skills with the ability to work independently on clearly defined tasks and contribute within a multidisciplinary team.

Preferred Qualifications:

• Eligible to apply for P.Eng. with Professional Engineers Ontario (PEO) within four years.
• Co-op/internship or project experience supporting water or wastewater treatment processes.
• Demonstrated ability to analyze technical data and prepare clear written reports.

• Relocation is not available for this position.
• Sponsorship for Canadian employment authorization is not available for this position.

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. Artificial intelligence will be used to support the screening, assessment, and selection of applicants for this role. Final hiring decisions are made by the hiring team.