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Senior Professional Geologist

APTIM

Stockton, CAJob$135–150K/yrSeen todaySeen in employer's feed today

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At a glance

Compensation
$135–150K/yr
Location
Stockton, CA
Work Authorization
Not specified

Olive lists jobs from US employers, including remote roles you can work from the United States.

Requirements

Credentials this posting asks for.

California Professional Geologist License40-Hour OSHA HAZWOPER Training8-Hour HAZWOPER Refresher Certification

Job overview

APTIM seeks a Senior Professional Geologist in California to support public- and private-sector solid waste projects. The role provides technical leadership in landfill hydrogeology, groundwater monitoring, environmental compliance, and regulatory reporting, while managing projects and client relationships. It also oversees field investigations, supports business development, and mentors junior staff. The posting requires a current California Professional Geologist license and approximately 15+ years of relevant experience.

Skills & qualifications

RequiredNice to have

Skills

Landfill HydrogeologyGroundwater MonitoringHydrogeologic InvestigationsRegulatory ComplianceTechnical ReportingCalifornia Water Board ExperienceAnalytical SkillsProblem SolvingWritten CommunicationVerbal CommunicationProject ManagementTeam CollaborationField WorkTitle 27 ComplianceLandfill Closure Monitoring

Qualifications

Bachelor's or Master's in Geology or RelatedCalifornia Professional Geologist License15+ Years Relevant Experience40-Hour OSHA HAZWOPER Training8-Hour HAZWOPER Refresher Certification

Benefits

Medical Insurance
Vision Insurance
Dental Insurance
Paid Time Off
401(k) Match

Full job description

Job Overview

APTIM is currently seeking a Senior Professional Geologist in California to join our Solid Waste Services Group and support our growing portfolio of public- and private-sector solid waste projects. Services include:

  • Groundwater and surface water monitoring, assessment, and corrective action

  • Hydrogeologic investigations and characterization

  • Development and evaluation of conceptual site models

  • Monitoring well design, installation, rehabilitation, and abandonment

  • Groundwater statistical analysis and trend evaluation

  • Stormwater monitoring and compliance

  • Solid waste regulatory compliance and reporting under site-specific Waste Discharge Requirements (WDRs), General WDRs, and applicable California Title 27 requirements

  • Environmental site assessments, investigations, and remediation

  • Geotechnical investigations and related environmental support

Our philosophy centers on developing and maintaining a culture of mutual respect and honesty, where people listen generously and speak straight. At APTIM, you can expect countless opportunities to learn, develop business and leadership skills, and engage on a multitude of projects.

Key Responsibilities/Accountabilities

Technical Leadership

  • Serve as a technical lead for landfill hydrogeology, groundwater, and environmental compliance projects.

  • Lead and support multidisciplinary project teams and complex technical assignments.

  • Develop and evaluate conceptual site models and groundwater monitoring programs.

  • Review and interpret groundwater monitoring data, statistical evaluations, and groundwater trends.

  • Lead the preparation of regulatory compliance reports, investigation work plans, monitoring plans, corrective action studies, and other technical documents.

  • Provide senior technical review and QA/QC of reports, work plans, calculations, and other project deliverables.

  • Apply knowledge of applicable federal, state, and local environmental regulations to develop practical solutions for clients.

Project & Client Management

  • Manage project scopes, budgets, schedules, resources, and technical deliverables.

  • Serve as a technical point of contact for clients, regulatory agencies, contractors, and project teams.

  • Anticipate client needs, identify potential project challenges, and develop practical and cost-effective solutions.

  • Coordinate and attend meetings with clients, regulatory agencies, contractors, and other project stakeholders.

  • Support proposal development, scope and fee preparation, business development, and growth of APTIM's California solid waste practice.

  • Build and maintain strong relationships with existing and prospective clients.

  • Coordinate effectively with APTIM's engineering, environmental, compliance, construction, and field teams.

  • Mentor and provide technical guidance to junior geologists, scientists, engineers, and field staff.

Field & Regulatory Support

  • Provide senior oversight of groundwater, surface water, soil, and soil vapor sampling and investigation programs.

  • Oversee monitoring well installation, development, rehabilitation, and abandonment, as well as other subsurface investigations.

  • Coordinate with drilling contractors, laboratories, field personnel, and clients to support field programs.

  • Review sampling plans, field documentation, laboratory data, and related technical information.

  • Interface with California regulatory agencies, including Regional Water Quality Control Boards, as appropriate for assigned projects.

  • Communicate technical concepts, evaluation results, recommendations, and project plans clearly to technical and non-technical audiences.

  • Demonstrate and promote a strong Safety First work ethic.

  • Perform other project and technical responsibilities as needed.

Basic Qualifications

  • Bachelor's or Master's degree in Geology, Hydrogeology, Engineering Geology, or a related geoscience discipline.

  • Current California Professional Geologist (PG) license.

  • Approximately 15+ years of relevant professional experience with groundwater monitoring, hydrogeologic investigations, regulatory compliance, and technical reporting.

  • Experience working with the California State Water Resources Control Board and/or Regional Water Quality Control Boards.

  • Strong analytical and problem-solving skills with the ability to evaluate complex geologic and hydrogeologic conditions.

  • Current 40-hour OSHA HAZWOPER training and 8-hour refresher certification.

  • Excellent written and verbal communication skills.

  • Strong organizational and project-management skills.

  • Ability to work independently while effectively collaborating within multidisciplinary teams.

  • Ability to communicate effectively with clients, regulators, contractors, and internal project teams.

  • Ability to perform periodic field work and wear required PPE when project conditions require it.

Preferred Qualifications

  • Experience with California Title 27 requirements applicable to solid waste facilities.

  • Experience supporting landfill closure and post-closure monitoring and compliance programs.

About APTIM

APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living. A leading professional solutions firm, we specialize in environmental, sustainability, resilience, and infrastructure solutions. Our team of experts provide these integrated solutions for forward-thinking government agencies, commercial and industrial clients, and energy customers. Together, we create sustainable and resilient communities for all.

What you can expect from APTIM:

  • Work that is worthy of your time and talent

  • Respect and flexibility to live a full life at work and at home

  • Dogged determination to deliver for our clients and communities

  • A voice in making our company better

  • Investment into your personal and professional development

As of the date of this posting, a good faith estimate of the current pay range for this position is $134,500 - $150,000 Per Year. Compensation depends on several factors including: experience, education, key skills, geographic location of the position, client requirements, external market competitiveness, and internal equity among other employees within APTIM.

Employee Benefits

APTIM Environmental and Infrastructure, LLC committed to providing an extensive range of benefits that protect and promote the health and financial well-being of our employees and their families through the APTIM Benefits Marketplace https://aptim.makeityoursource.com/ .

  • Medical, vision, and dental insurance: Through the marketplace, our employees can choose benefits from five metallic levels and several carriers to find the right benefits that work for them in their location.

  • Company paid and optional Life insurance

  • Short-term and long-term disability insurance

  • Accident, Critical Illness, and Hospital Indemnity coverage

  • Paid holidays, vacation, and sick leave (eligibility based on company policy and applicable law)

  • 401(k) APTIM offers three 401k plans through the Aon Pooled Employer Plan (PEP). The specific plan you are eligible for depends on the business unit you are in. The details of the largest plan are found here:

  • APTIM 401(k) Guide (https://aptim.makeityoursource.com/getattachment/427b25cf-c3d5-43c1-97af-a3c3f474a136/APTIM-Corp-401(k)-Guide.pdf)

  • APTIM - Helpful Documents

Watch our video:

About APTIM - In Pursuit of Better

Equal Opportunity Employer Minorities/Women/Protected Veterans/Disabled

Applicants with a physical or mental disability who require a reasonable accommodation for any part of the application or hiring process may make their request known by e-mailing [email protected] or calling 855.343.5600 for assistance.

EOE/Vets/Disability

How this job compares

Set against the 895 open Geologist jobs on Olive Jobs, counted November 4, 2026.

Pay
  • This posting$135–150K/yr
  • California median$91–159K/yr51 salary ranges
  • US median$76–159K/yr734 salary ranges

This range's midpoint, $142K, is 13% above the California median midpoint ($126K) — in the middle half of Geologist salary ranges in California.

Openings
Olive Jobs lists 62 open Geologist jobs in California and 895 across the US. Under 1% of them nationwide are listed as remote or flexible.
Hiring the most in California
Experience
This posting asks for at least 15 years of experience — more than three in four Geologist postings that state a minimum ask for (median 5 years, across 824 postings).
Education
786 of the 895 open Geologist jobs (88%) ask for a bachelor's degree or higher.

Counted across the open, public US postings on Olive Jobs on November 4, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.

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