Senior Air Quality Engineer

APTIM • Washington, DC

2d • $135,000 - $166,000

About The Position

APTIM is seeking a Senior Air Quality Engineer to provide technical leadership in air permitting, dispersion modeling, regulatory strategy, and compliance. This client-facing role supports complex projects for data centers, power generation, manufacturing, industrial operations, and major infrastructure, while helping grow APTIM’s Air Quality Services practice.

The role leads permitting and regulatory work, performs or oversees air dispersion modeling, and supports compliance activities. It coordinates air quality requirements with project design, construction, commissioning, and operations. The position also serves as a primary client and regulatory agency contact and manages project scopes, budgets, schedules, teams, and technical quality.

The engineer will help build client relationships and identify opportunities to expand APTIM’s services. APTIM describes its work as integrating environmental consulting, permitting, engineering, construction, EHS, infrastructure, and operational capabilities across project lifecycles.

The stated good-faith pay range is $135,000 to $166,000 per year. Compensation depends on factors including experience, education, skills, position location, client requirements, market competitiveness, and internal equity.

Requirements

• Bachelor’s degree in engineering, environmental science, atmospheric science, or a related technical discipline.
• 10 or more years of relevant air quality consulting, permitting, modeling, or compliance experience.
• Demonstrated experience with major source permitting, regulatory strategy, dispersion modeling—preferably AERMOD—and federal, state, and local air regulations.
• Experience preparing and reviewing emissions calculations, potential-to-emit analyses, BACT evaluations, and permit applications.
• Strong technical writing, communication, client relationship, and project management skills.
• Ability to manage multiple projects and competing priorities.

Nice To Haves

• PE, CCM, or another relevant professional credential.
• Experience with PSD/NSR, Title V, NESHAP/MACT, and NSPS requirements.
• Experience permitting data centers, power generation, large combustion sources, industrial facilities, or utility infrastructure.
• Experience with complex multi-source modeling, emergency and non-emergency generators, and direct coordination with regulatory agencies.

Responsibilities

• Lead major source, PSD/NSR, Title V, synthetic minor, and minor source permitting for new facilities, expansions, and modifications.
• Develop regulatory strategies, emissions calculations, potential-to-emit analyses, BACT evaluations, and air permit applications.
• Evaluate applicability of the Clean Air Act, NESHAP/MACT, NSPS, and state and local air regulations.
• Perform or oversee air dispersion modeling using AERMOD and related tools, including criteria pollutant and toxic/HAP impact assessments.
• Support compliance through audits, emissions inventories, monitoring, recordkeeping, reporting, and corrective actions.
• Lead air quality support for data centers and power infrastructure, including emergency, standby, and prime-power generation.
• Coordinate permitting with project design, construction schedules, commissioning, and operations.
• Serve as a primary client and regulatory agency contact; manage project scopes, budgets, schedules, teams, and technical quality.
• Build client relationships and identify opportunities to expand APTIM’s services.

Benefits

• Medical, vision, and dental insurance, with options through a benefits marketplace.
• Company-paid and optional life insurance.
• Short-term and long-term disability insurance.
• Accident, Critical Illness, and Hospital Indemnity coverage.
• Paid holidays, vacation, and sick leave, subject to company policy and applicable law.
• 401(k) plans, with eligibility depending on business unit.
• Flexibility to live a full life at work and at home.
• Investment in personal and professional development.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior