Geological Assistant Jobs in California (NOW HIRING)

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At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world's most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

AECOM is actively seeking an experienced Lead Project Geologist / Assistant Project Manager for immediate employment in our Oakland, California office. Working at AECOM means being part of a global team and collaborating with award-winning professionals around the world.

In this role, you will serve as both a technical lead and project management partner, supporting environmental investigation and remediation projects from planning through execution. You will provide technical leadership, mentor junior staff, coordinate project activities, and assist Project Managers with client communication, financial tracking, scheduling, and project delivery.

Responsibilities

• Lead technical execution of environmental site investigations and remediation projects.
• Apply geologic expertise to develop practical, technically sound solutions for complex environmental challenges.
• Interpret geologic and environmental data, conduct technical analyses, and ensure compliance with applicable local, state, and federal regulations.
• Prepare and review technical reports, work plans, and regulatory deliverables.
• Support Project Managers with project planning, budgeting, scheduling, forecasting, invoicing, and overall project execution.
• Assist with managing project scope, schedule, budgets, and resource allocation.
• Coordinate multidisciplinary project teams, subcontractors, and field personnel.
• Mentor and provide technical guidance to geologists, scientists, and junior staff.
• Monitor project performance, identify risks, and recommend corrective actions as needed.
• Provide technical quality assurance and quality control (QA/QC) on project deliverables.
• Communicate project status, technical findings, and recommendations to clients and internal stakeholders.
• Support proposal preparation, cost estimating, and business development activities.

Minimum Qualifications

• Bachelor's degree in Geology, Environmental Science, Engineering, or a related discipline.
• 6+ years of progressively responsible experience supporting environmental investigation and remediation projects, or demonstrated equivalent education and experience.
• Current Professional Geologist (P.G.) license in the State of California.
• Experience with site investigations, remedial investigations, and environmental compliance.
• Valid driver's license.
• Ability to travel occasionally, including overnight travel when required.

Preferred Qualifications

• Experience serving as a technical lead while supporting project management activities.
• Experience preparing proposals, scopes of work, cost estimates, schedules, and change orders.
• Familiarity with project financial management, invoicing, forecasting, and resource planning.
• Interest in developing client relationships and supporting business development.
• Experience leading multidisciplinary teams on environmental consulting projects.
• Experience executing Site Investigations, Remedial Investigations, Feasibility Studies, and Risk Assessments for federal, industrial, or commercial environmental projects.

• This position does not provide employment visa sponsorship now or in the future. Candidates must be authorized to work in the United States without the need for current or future sponsorship.
• Employment is contingent upon successfully passing a pre-employment drug screen.

At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients' complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle - from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you'll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you've always envisioned. Here, you'll find a welcoming workplace built on respect, collaboration and community-where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.