Senior Environmental Scientist​/Compliance Specialist; Remote

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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.

Tetra Tech is seeking a self‑motivated, experienced 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 (LFG) 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 LFG monitoring, Surface Emissions Monitoring (SEM), Landfill Gas‑to‑Energy (LFGTE) Systems, air quality permitting, and compliance with California Landfill Methane Regulation (LMR) requirements, 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 $90K-$110K annually, based on qualifications, location, and experience.

The Final date to receive applications is 11/11/2026.

• Independently review, analyze, interpret, and validate landfill air quality and LFG 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 LMR, NSPS, and NESHAP requirements, identifying compliance risks, deviations, and corrective action needs.
• Prepare, review, and finalize environmental compliance…