Principal Consultant, Environmental Air Quality Engineer or Scientist

Are you a senior leader air quality expert ready to lead transformative projects and shape the future of environmental consulting? At ERM , we’re not just solving compliance challenges—we’re driving innovation for some of the world’s most dynamic industries. If you’re looking for a senior‑level role where your expertise and leadership will make a global impact, this is your opportunity. Why This Role Matters ERM’s Air Quality Service Area is one of the largest and fastest‑growing in the industry, generating over $50M annually and delivering cutting‑edge solutions for climate change, permitting, and compliance. As a Principal Technical Consultant, Environmental Air Quality Engineer or Scientist in Denver, CO , you’ll play a pivotal role in advancing ERM’s strategy, leading high‑profile projects, and expanding our presence in key sectors like manufacturing, technology, oil & gas, and/or chemicals. Our leaders proactively work together to build strategies and campaigns around key business drivers for our clients, with the primary focus of finding and delivering high‑profile rewarding projects and building our business, whether it be for permitting compliance strategy and emission inventories, greenhouse gas reporting regulations, new air dispersion modeling challenges, new State and Federal rule standards, energy management and transition, or climate change adaptation. What Your Impact Is Drive strategic growth of ERM’s Air Quality Service Area across North America. Lead complex air permitting and compliance programs for major industrial clients. An established reputation in the local marketplace and recognized technical expertise in one of ERM’s existing service offerings, which include, but are not limited to air quality; environmental, health, and safety; compliance assurance; process safety; climate change and sustainability; and environmental permitting. Build and nurture client relationships that result in repeat business and long‑term partnerships. Serve as a Senior expert for strategic air permits and compliance programs for a variety of industrial clients with complex technical/regulatory issues. Mentor and develop the next generation of air quality professionals. Collaborate with other ERM global practitioners to execute air quality projects, including participating with teams comprised of air quality professionals from multiple offices around the global organization. What You’ll Bring Required Bachelor’s degree in engineering (chemical, environmental, civil, or mechanical engineering), environmental science, or related discipline. 6+ years of relevant experience. Proven expertise in air permitting and climate change strategies. Strong track record as a “seller/doer,” winning and delivering large, strategic projects. Experience and deep understanding of local, state, and federal air regulations. In‑depth understanding of the manufacturing, energy transition (oil & gas), technology, chemical, and mining industries in California and Southwestern states, and the companies operating in this sector, including existing relationships that can be leveraged into new business. Established relationships within manufacturing, technology, oil & gas, or chemical sectors. Exceptional leadership, communication, and mentoring skills. Excellent communication (written/verbal), strategic thinking, negotiation, presentation, and people skills. Driver's License Required: This position requires a valid driver's license and/or the ability to operate a company vehicle due to the nature of job duties, which include travel to various client locations across a large geographical area. This position is not eligible for immigration sponsorship. Preferred Advanced expertise in other environmental compliance‑related areas that may include stormwater, spill prevention, control, and countermeasure plans, wastewater, waste, water resources, risk management planning, California Environmental Quality Act permitting, multimedia auditing, etc. Solid air quality consulting experience, with a high degree of technical competence in Title V, PSD, NSR, BACT, and MACT. Certification in field: P.E., CSP, CHMM, or similar registration. Familiarity with air modeling, stack testing, ambient air measurements. Key Responsibilities Develop and implement strategic business plans to grow ERM’s air quality services. As a “seller/doer,” contribute to expanding ERM’s air consulting and compliance services annually. Identify and develop new opportunities, prepare effective technical proposals, and take an active leadership role in the development of new business with new and existing clients. Develop and expand client relationships that generate repeat business. Serve as a senior technical expert for permitting and compliance programs. Manage project deliverables, budgets, and schedules while ensuring client satisfaction. Mentor junior and mid‑level staff and foster a collaborative team culture. Support global initiatives and cross‑sell ERM’s diverse service offerings. Accepting applications on an ongoing basis. For the Principal Consultant, Environmental Air Quality Engineer or Scientist position, the anticipated annual base pay is $127,648–$163,088 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. Note: Bonuses, commissions, and other forms of additional compensation are not guaranteed and subject to the sole discretion of ERM and its policies and procedures. Who We Are: 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 expertise in addressing their environmental, health, safety, risk and social issues. We call this capability our “boots to boardroom” approach for its comprehensive service model that allows ERM to develop strategic and technical solutions that advance objectives on the ground or at the executive level. Please submit your resume and brief cover letter. ERM does not accept recruiting agency resumes. Please do not forward resumes to our jobs alias, ERM employees or any other company location. ERM is not responsible for any fees related to unsolicited resumes. ERM is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, gender, sexual orientation, gender identity, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. Thank you for your interest in ERM!

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