Senior Air Quality Engineer: Lead Permitting & Modeling

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Job Description

Job Overview:

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 will support complex projects for data centers, power generation, manufacturing, industrial operations, and major infrastructure while helping grow APTIM’s Air Quality Services practice.

Key Responsibilities/Accountabilities:

• 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.

Basic Qualifications:

• Bachelor’s degree in engineering, environmental science, atmospheric science, or a related technical discipline.
• Must have 10+ 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.

Preferred Qualifications:

• 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.

Why APTIM

APTIM brings together environmental consulting, permitting, engineering, construction, EHS, infrastructure, and operational capabilities to help clients address complex projects across their entire lifecycle.

For data center and power projects in particular, APTIM can help clients address environmental and regulatory requirements before they become critical-path issues, while connecting those requirements to site development, engineering, construction, commissioning, and operations.

About APTIM

APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living. A leading professional solutions firm, we specialize in environmental, sustainability, resilience, and infrastructure solutions. Our team of experts provide these integrated solutions for forward-thinking government agencies, commercial and industrial clients, and energy customers. Together, we create sustainable and resilient communities for all.

What you can expect from APTIM:

• Work that is worthy of your time and talent
• Respect and flexibility to live a full life at work and at home
• Dogged determination to deliver for our clients and communities
• A voice in making our company better
• Investment into your personal and professional development

As of the date of this posting, a good faith estimate of the current pay range for this position is $135K to $166K per year. Compensation depends on several factors including: experience, education, key skills, geographic location of the position, client requirements, external market competitiveness, and internal equity among other employees within APTIM.

Employee Benefits

APTIM Environmental & Infrastructure, llc is committed to providing an extensive range of benefits that protect and promote the health and financial well-being of our employees and their families through the APTIM Benefits Marketplace .

• Medical, vision, and dental insurance: Through the marketplace, our employees can choose benefits from five metallic levels and several carriers to find the right benefits that work for them in their location.
• 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 (eligibility based on company policy and applicable law)
• 401(k)APTIM offers three 401k plans through the Aon Pooled Employer Plan (PEP). The specific plan you are eligible for depends on the business unit you are in. The details of the largest plan are found here:

APTIM is a place where our people make a difference, not just a living.

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