Senior Environmental Scientist/Compliance Specialist (Remote)

Discover your full potential. At Tetra Tech, we are collaborating with industry-leading experts for a sustainable future for our world. We combine consulting and engineering with advanced analytics and technology to solve the world’s most complex challenges. Our innovation hubs across the globe will enable you to share ideas and best practices while growing your professional network. Wherever you are in your career journey, you will benefit from working with world-class engineers, scientists, and technical specialists. At Tetra Tech, we are Leading with Science to solve the world’s most complex challenges. Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world. For over 50 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy, and international development. Our work has improved more than 625 million lives around the world. Join Tetra Tech to make a real difference. Our work leverages cutting-edge technologies, advanced analytics, and the expertise of world-class scientists and engineers to create meaningful change around the world. Discover your full potential – join us to advance your career while leaving a lasting legacy. Apply today and join the company that is Leading with Science®. Tetra Tech is seeking a self-motivated, experienced Senior Environmental Scientist / Compliance Specialist to lead and expand our landfill and air quality compliance services within the solid waste industry. This position is ideal for candidates with a strong technical background in air regulations, landfill gas systems, emissions compliance, environmental permitting, and regulatory interpretation, who are comfortable working with limited oversight while supporting complex, multi-site compliance programs. In this role, you will independently manage and support regulatory compliance programs by analyzing complex field and operational datasets, interpreting and applying air quality regulations and permit requirements, preparing and reviewing compliance reports, and leading air permitting and emissions calculation efforts. The primary focus areas include Landfill Gas (LFG) monitoring, Surface Emissions Monitoring (SEM), Landfill Gas‑to‑Energy (LFGTE) Systems, air quality permitting, and compliance with New Source Performance Standards (NSPS) and National Emissions Standards for Hazardous Air Pollutants (NESHAP) applicable to solid waste facilities. This position is primarily remote, with limited, as‑needed travel or occasional site visits. Candidates must be comfortable working independently, exercising professional judgment, and collaborating with project managers, field staff, engineers, clients, and regulatory specialists across geographically dispersed teams. This position is eligible for our full benefits package including but not limited to Medical, Dental, Vision, Life, AD&D, Disability, Flexible Spending Account (FSA), Health Spending Account (HSA), My Flex Time (MFT – paid time off), 401K, and an Employee Stock Purchase Plan. The pay range for this position is $85K–$120K annually, based on qualifications, location, and experience. Only those that attach a cover letter and are located in either the Pacific or Mountain time zone will be considered. The deadline to apply is 05/6/2026. Your Role

• Independently review, analyze, interpret, and validate landfill air quality and landfill gas monitoring data, including wellfield data, SEM results, and air emissions datasets for multiple facilities.
• Evaluate monitoring and operational data against regulatory standards, permit conditions, and NSPS/NESHAP requirements, identifying compliance risks, deviations, and corrective action needs.
• Prepare, review, and finalize environmental compliance reports, including air compliance summaries, annual and quarterly monitoring reports, deviation analyses, and regulatory submittals.
• Lead the development and preparation of air quality permit applications, amendments, and renewals, including emissions calculations, regulatory applicability analyses, and compliance demonstrations.
• Manage and oversee large, multi‑site datasets related to air emissions, landfill gas, SEM results, compliance schedules, and agency reporting deadlines.
• Develop, maintain, and refine standardized templates, tools, and compliance trackers to ensure consistent, accurate, and timely reporting across multiple facilities and clients.
• Coordinate closely with on‑site operations staff, technicians, contractors, and engineers to ensure monitoring programs, testing protocols, and system performance meet regulatory and permit requirements.
• Serve as a technical resource to Project Managers and jun

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