On-Site Associate Project Engineer: Landfill Gas Design

Tetra Tech BAS, Inc.; Diamond Bar (CA); On-site; USD 70,000 - 80,000; Full time

Benefits offered by this job

Comprehensive benefits

Merit-based rewards

Work-life balance

Learning & development opportunities

Job summary

Tetra Tech BAS, Inc. is seeking an Associate Project Engineer / Landfill Gas Designer to join the OM&M and Engineering Team in Southern California (Diamond Bar, CA).

The role covers planning, design, permitting, and construction of biogas and landfill gas systems, solid waste facilities, and related environmental projects. You will work with Client and Project Managers across the company, supervising engineers and technicians, with site visits and office work.

Qualifications

• Bachelor's degree in Civil, Chemical, Mechanical, Geological or Environmental Engineering (Master's Degree is a plus).
• 0 to 2 years of experience in engineering projects.
• Engineer In Training (EIT) Certification is a plus.
• AutoCAD/Civil 3D or GIS skills is a plus.
• 40 Hour OSHA HAZWOPER certification is a plus.
• Supervisory experience is a plus.
• Read, analyze, and interpret common scientific and technical reports.
• Write environmental reports, business correspondence, and procedure manuals.
• Respond to common inquiries or complaints from clients, regulatory agencies, or members of the business community.
• Possess excellent overall communication skills.
• Experience with biogas and landfill gas systems and solid waste industry is a plus.
• Proven technical skills in design and/or construction.
• Outstanding knowledge of the Microsoft Office software suite, and PDF editors (Bluebeam or Adobe).
• Excellent interpersonal skills and unwavering personal integrity.
• Solid organizational and time management skills.
• Self‑disciplined/motivated individual who also works well in a team environment.
• Valid driver's license.

Responsibilities

• Assist in coordinating field monitoring and sampling activities for Landfill Gas Collection and Control Systems.
• Help prepare proposals and participate in client and regulatory meetings as needed.
• Assist in various project phases, including investigation, design, and construction/remediation, by preparing drawings, plans, specifications, and reports.
• Provide on‑site support during construction to ensure adherence to engineering and regulatory standards.
• Assist in preparing permit documents for new developments, modifications, and closures.
• Draft construction plans, specifications, and cost estimates under the guidance of senior staff.
• Support the development of biogas collection, leachate, stormwater/surface water management, and liner system designs.
• Contribute to technical analyses for biogas‑to‑renewable energy and solid waste projects across California and the Western U.S.
• Provide Construction Quality Assurance (CQA) services for Landfill Gas Collection and Control Systems.
• Follow and promote safe work practices.
• Support system analysis efforts to ensure operational objectives and regulatory compliance.

Skills

Communication skills

Interpersonal skills

Time management

Self-motivation

Education

Bachelor's degree in Civil, Chemical, Mechanical, Geological or Environmental Engineering

Master's degree is a plus

Tools

AutoCAD/Civil 3D

GIS

Bluebeam/Adobe PDF editors

Job description

Tetra Tech BAS, Inc. is seeking an Associate Project Engineer / Landfill Gas Designer to join the OM&M and Engineering Team in Southern California (Diamond Bar, CA).

The role covers planning, design, permitting, and construction of biogas and landfill gas systems, solid waste facilities, and related environmental projects. You will work with Client and Project Managers across the company, supervising engineers and technicians, with site visits and office work.