Senior Consultant, Air Quality Dispersion Modeler

Ready to Shape the Future of Air Quality?

Join ERM—a global sustainability leader—and take your expertise to the next level. As part of our nationwide network of Air Quality & Climate Change specialists, you’ll tackle complex challenges, collaborate with top-tier professionals, and make a measurable impact on industries and communities. This is more than a job—it’s your opportunity to lead innovation in environmental consulting.

At ERM, we don’t just advise—we drive change. As a Senior Consultant, Air Quality Dispersion Modeler
, you’ll play a pivotal role in designing strategies that help major U.S. industries meet regulatory requirements while advancing sustainability goals. Your work will directly influence cleaner air, healthier communities, and smarter environmental solutions. This position is based in Philadelphia (Malvern), PA;
Washington, DC; or Ewing, NJ
.

• Serve as a trusted technical leader on high-profile air quality projects.
• Guide clients through complex compliance landscapes, ensuring regulatory success.
• Deliver advanced dispersion modeling that informs critical environmental decisions.
• Mentor junior team members and foster technical excellence.
• Build strong client relationships that drive growth and innovation.

Required:

• Bachelor’s degree in Environmental Science, Atmospheric Sciences/Meteorology, or related field (Master’s preferred).
• 3-4+ years of consulting experience in air quality or atmospheric science (5–7 years preferred).
• Expertise in Clean Air Act regulations (Title V, MACT, PSD) and air dispersion modeling requirements.
• Proficiency with regulatory air quality models (AERMOD, VISCREEN, CALPUFF).
• Exceptional communication skills for client and agency interactions.
• Ability to manage multiple projects in a fast-paced environment and travel as needed.
• This position is not eligible for immigration sponsorship.

Preferred:

• Advanced degree (MS) in a related discipline.
• Programming and GIS skills.
• Familiarity with Microsoft Office and modeling software.

• Lead air quality dispersion modeling projects using EPA-approved models to assess health and environmental impacts.
• Develop accurate analyses for Title V, PSD, and New Source Review compliance.
• Manage emission inventories and calculations for diverse industrial clients.
• Serve as a technical liaison with state and federal regulators during permit reviews.
• Deliver high-quality reports and presentations to clients and agencies.
• Oversee project scope, budget, and schedule while maintaining ERM’s quality standards.
• Foster strong client relationships and contribute to business growth through technical leadership.

For the Senior Consultant, Air Quality Dispersion Modeler position, the anticipated annual base pay is $76,000 – $85,4898 (USD). Actual pay will depend on factors such as education, experience, skills, location, performance, and business needs. In some cases, pay may fall outside this range. This role may be eligible for bonus pay (casual and fixed term/flex force employees are not bonus eligible).

We offer a comprehensive benefits package, including paid time off, parental leave, medical, dental, vision, life, disability, AD&D insurance, 401(k) or RRSP/DPSP, and other applicable benefits to eligible employees.

Bonuses, commissions, and other forms of additional compensation are not guaranteed and subject to the sole discretion of ERM and its policies and procedures.

As the largest global pure play sustainability consultancy, we partner with the world’s leading organizations, creating innovative solutions to sustainability challenges and unlocking commercial opportunities that meet the needs of today while preserving opportunity for future generations. At ERM we know that creating a diverse, equitable and inclusive work environment is an essential part of making our company a great place to build a career.

We also see our diversity as a strength that helps us create better solutions for our clients. Our diverse team of world‑class experts supports clients across the breadth of their organizations to operationalize sustainability, underpinned by our deep technical…