Environmental Engineer

The Opportunity

Tetra Tech is looking for a full-time Environmental Engineer based in Helena, MT.

This position provides both field and office engineering support for environmental assessment, remediation, and reclamation projects in Montana and other locations. Working under the direction of senior engineers and project managers, the candidate will assist with site characterization, remedial design, construction oversight, and regulatory coordination for contaminated sites — including petroleum/organic compounds, metals, asbestos, and other solid or hazardous wastes — and supports business development activities as needed.

The position requires safe field practices, technical competence in data collection and analysis, clear written documentation, and effective communication with project teams, clients, and regulatory agencies.

This position offers a great career growth opportunity for an individual who wants to make a positive impact on the environment and local communities, while further building their career and practice in a diverse team capable of addressing contaminated sites from preliminary assessment to closure. The following duties are considered essential to the role. Reasonable accommodations may be made to enable individuals with disabilities to perform these essential functions:

• Assist with planning and execution of site characterization and investigation activities (drilling, soil/groundwater sampling, trenching, asbestos surveys, monitoring well installation, and geophysical surveys).
• Collect, log, and QA/QC field data and samples; maintain chain-of-custody, field notes, and health & safety documentation.
• Support laboratory testing coordination and review laboratory data for consistency, data quality, and preliminary interpretation.
• Assist in development of remedial investigation reports, feasibility studies, remedial designs, and reclamation plans under senior staff guidance.
• Perform basic engineering analyses and calculations to support contaminant mass balance, simple fate‑and‑transport screening, contaminant delineation, and day lighting of conceptual site models.
• Prepare technical deliverables including field reports, boring and sampling logs, figures, tables, data summaries, and portions of regulatory submittals.
• Provide construction oversight and documentation during remedial and reclamation activities (daily observation, subcontractor coordination, inspection reports, and conformance checks).
• Support preparation of cost estimates, scopes of work, and proposals for remediation and environmental services; participate in client meetings and site visits to develop business opportunities.
• Assist with permitting and regulatory compliance tasks; prepare or contribute to permit applications, notifications, and regulatory correspondence.
• Follow and promote strict health, safety, and environmental procedures on site (including OSHA and project‑specific H&S plans); participate in safety briefings and maintain personal protective equipment.
• Maintain project schedules, track field and lab deliverables, and provide timely updates to project managers.
• Communicate findings and recommendations clearly to project teams, clients, and regulators; elevate technical or safety issues to senior staff.

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.

Bachelor’s degree in…