Associate Developer Jobs in Alhambra, CA (NOW HIRING)

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.

Tetra Tech is currently seeking an Associate Project Engineer / Landfill Gas Designer to join our Operations, Maintenance & Monitoring (OM&M) and Engineering Team in the Southern California Area (Diamond Bar, CA). In this role, you will take a prominent role in the planning, design, permitting, and construction of biogas and landfill gas systems, solid waste handling and disposal facilities as well as other environmental projects. You will work under the direction of Client Managers and Project Managers located throughout the company and across the country, and you may oversee and direct the activities of engineers, scientists, technicians, and clerical staff toward successful completion of projects. This position will combine office assignments with occasional site visits and client involvement. The pay scale for this position is $70k-$80k per year, based on qualifications and experience.

Your Role:

• 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.

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.

Life at Tetra Tech:
The perks of working at Tetra Tech include:

• Comprehensive and market‑competitive benefits.
• Merit‑based financial rewards.
• Flexibility and company‑wide commitment to work/life balance.
• Collaborative team atmosphere that values the contributions of all employees.
• Learning and development opportunities for ongoing professional growth.

About Tetra Tech:
Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high‑end consulting and engineering services for projects worldwide. With 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.

Tetra Tech is proud to be an Equal Opportunity Employer. All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sexual orientation, gender identity, status as a protected veteran, or any other characteristic protected by law. Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans.

We thank all applicants for their interest, however, only those candidates selected for interviews will be contacted.

Explore our open positions at https://www.tetratech.com/careers. Follow us on social media to learn more about our people, culture, and opportunities:
LinkedIn: @TetraTechCareers
X (Twitter): @TetraTechJobs