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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 is seeking an experienced Senior Air Quality Consultant to support advanced ambient air quality studies and regulatory compliance projects. The selected candidate will contribute expertise in air dispersion modeling, emissions management, and permitting for clients across multiple sectors, while collaborating with multidisciplinary teams to solve complex air quality challenges.

Key Responsibilities

Business Development
• Lead business development and proposal efforts using strong technical expertise and industry contacts, particularly in the energy and oil & gas sectors.

Compliance (Permitting, NPRI, GHG, AEIR, etc.)
• Apply working knowledge of relevant air quality regulatory programs, guidelines, and best practices.
• Manage air quality assessment components of permits and environmental assessments.
• Liaise with provincial and federal regulators for submissions and permit applications.

Air Emission Inventory & Dispersion Modeling
• Prepare high-quality air quality assessment reports for permits and environmental assessments.
• Manage dispersion modeling using AERMOD, CALPUFF, and CAL3QHCR.
• Estimate emissions (GHG, CACs, and other pollutants) using site data, emission factors, and US EPA MOVES.
• Interpret modeling results and compare them with applicable regulations.

Ambient Air Monitoring
• Oversee installation, maintenance, and decommissioning of monitoring equipment.
• Coordinate with suppliers and labs for performance checks and calibration.
• Manage data collection, troubleshoot issues, and ensure data quality.
• Lead development of air quality monitoring and management plans.

Research & Technical Expertise
• Investigate industrial processes and emissions in sectors such as oil and gas, transportation, and chemicals.
• Recommend air pollution control measures and compliance strategies.

Collaboration & Process Optimization
• Work closely with internal teams and clients to meet project objectives.
• Mentor junior staff and contribute to business development initiatives.
• Support automation of data workflows using tools such as Python or R.

Minimum Qualifications
• Bachelor’s degree in Environmental Science, Engineering, or a related field.
• 10+ years of relevant experience in air quality analysis, dispersion modeling, project management, technical writing, proposal preparation, and environmental compliance OR demonstrated equivalency of education and experience.

Preferred Qualifications
• Master’s degree in Environmental Science, Engineering, or a related field.
• 15+ years of experience in air quality analysis, including advanced dispersion modeling.
• Excellent written and oral communication skills.
• Strong leadership skills and experience mentoring junior team members.
• Experience in preparing regulatory approvals, reports, and permits.
• Familiarity with ambient air monitoring systems, including installation, maintenance, and troubleshooting.
• Proficiency in Python or R for workflow automation.
• Experience supporting business development and proposal preparation in environmental consulting, ideally within the energy or oil & gas sectors.

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.