Principal Consultant

We are SLR Consulting (US), a 500+ coast-to-coast team of advisory, environmental/engineering, and regulatory professionals. We deliver environmental and sustainability services to our clients through the integration of over 30 advisory, technical environmental, and engineering disciplines to help clients address some of their most complex challenges around sustainability. We are Making Sustainability Happen. As our new Principal Consultant , you will play an important role on a team whose work is essential to achieving this goal. Role The Principal Consultant will be an integral part of our Air Quality Practice, supporting multimedia projects as a project manager, technical expert, and staff mentor. SLR believes strong collaboration across disciplines and staff levels drives business excellence and growth, and the Principal Consultant will be the essential link in cultivating these relationships. The highly experienced environmental science leader will be responsible for advancing regulatory compliance, air quality monitoring, sampling programs, and environmental program management across state and industrial settings. The candidate will provide expert scientific guidance, project leadership, and regulatory interpretation to support environmental protection, public health, and operational excellence. As SLR continues to expand its presence and capabilities in Pittsburgh, the Principal Consultant will play a pivotal role in shaping the trajectory of our project portfolio. This position will contribute to growth opportunities across emerging and established markets, leveraging strong client partnerships and regulatory insight into the position of SLR as a preferred provider in environmental and air quality services. Through project development, cross‑disciplinary integration, and high‑caliber technical leadership, the Principal Consultant will help drive sustainable business expansion while ensuring that our project work consistently reflects innovation, compliance excellence, and industry‑leading best practices. By mentoring team members, strengthening operational processes, and fostering a collaborative culture, the Principal Consultant will contribute directly to building a resilient, scalable operation. Their leadership will ensure the Air Quality Practice remains agile, competitive, and prepared to meet evolving industry demands—ultimately supporting SLR’s broader organizational mission to Make Sustainability Happen. Responsibilities: Develop and mentor a growing team of environmental professionals, fostering a collaborative and high-performance culture. Organize project teams, logistics and schedule to efficiently deliver projects. Manage and contribute to the preparation of air quality permit applications (e.g., PSD, Title V, Minor Permit, AQADs). Provide regulatory guidance and compliance support to clients across diverse industries. Stay ahead of evolving environmental regulations and translate insights into client solutions Ensure project delivery within scope, budget, and schedule expectations Contribute to growing client relationships. Qualifications/Education/Memberships: Proven track record in environmental consulting. Bachelor’s degree in Engineering, Environmental Science, Chemistry, or related field 15-20+ years of relevant experience in environmental consulting, government or industry (oil and gas, mining, utilities). Strong knowledge of air quality regulations (Title V, PSD, NSPS, NESHAP, GHG, RMP, Ambient Monitoring) Effective communicator, writer, with strong organizational and analytical skills Proficient in Microsoft Office; valid driver’s license. Working @ SLR With us, there is no doubt you’ll grow your subject-matter expertise and industry knowledge. We care about investing in our employees for the long-run, and if you ask our team, they’ll tell you that’s just one of the many benefits of working here. We want to be a place where you can experience career growth and satisfaction for many years. Here’s what else you’ll enjoy as part of our team: Competitive total compensation package including medical, dental, orthodontia, vision, FSA/HSA, generous PTO accrual, 10 paid holidays, 401(k) retirement account with company matching program, company paid life insurance, short & long term disability insurance, and employee assistance program. Part-time, permanent role with opportunities for professional growth and advancement A flexible workplace environment for modern leaders Diversity, equity, and inclusion (DE&I) are at the core of who we are and want to be. SLR is proud to be an Equal Employment Opportunity / Affirmative Action Employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, gender, sexual orientation, civil union status, age, citizenship, marital status, disability, gender identity or expression, genetic information, or veteran status. At SLR, we embrace diverse cultures, perspectives, skills, and experiences within and outside our organization. We respect and celebrate differences and want to ensure that we continuously strive to build a place where everyone feels included and is encouraged to be their authentic self. We are committed to these values, and our SLR Culture & Diversity Team works to actively promote diversity, equity, and inclusion across our people and talent processes, operations, and client work around the world. If you have a disability and need reasonable accommodations at any point in the application or interview process, please contact us at