Experienced Remediation Engineer or Geologist (PFAS)

Geosyntec Consultants; Walnut Creek (CA); On-site; USD 101,650 - 188,960; Full time

Benefits offered by this job

Paid holidays

Vacation

Sick time

Personal paid time off

Medical insurance

Dental insurance

Vision insurance

Life insurance

Disability insurance

401(k)

Job summary

Geosyntec Consultants in Oakland, Walnut Creek, or Sacramento is seeking an Experienced Remediation Engineer or Geologist (PFAS) to lead PFAS investigations and remedial projects. You will guide multi‑disciplinary teams, coordinate regulatory aspects, and deliver engineering solutions for complex environmental challenges across Northern California.

You will develop site models, plan multi‑media sampling, and oversee treatment design, permitting, O&M, and client communications, with a focus on

Qualifications

• 7+ years of environmental consulting experience with PFAS focus.
• Strong remediation foundation and PFAS investigation methods.
• Experience managing projects with budget, scope, and schedule responsibility.
• Thorough understanding of CalEPA and USEPA PFAS regulations and guidance.
• Experience mentoring professional staff and leading teams.
• Excellent written and oral communication skills.
• Ability to travel to client facilities and perform field activities.

Responsibilities

• Lead PFAS investigations, remediation projects, and client communications.
• Develop PFAS CSMS, sampling programs, and remedy strategies.
• Prepare work plans, memos, data interpretations, and remediation designs.
• Oversee pilot studies, full‑scale remedy implementation, and O&M support.
• Review deliverables and provide technical oversight to the project team.
• Support business development and client relationship growth with regulators and clients.
• Mentor junior staff in PFAS sampling and data quality review; travel as needed.

Skills

PFAS investigations

Remediation/treatment

Project management

Regulatory coordination

Technical leadership

Mentoring staff

Writing and communication

Field work

Driving/valid driver's license

Education

Bachelor's degree in engineering or environmental science

Professional Engineer (PE) or Professional Geologist (PG) licensure in California

Job description

Primary Location: Oakland, Walnut Creek, or Sacramento, California.

Job ID: 2026-4372.

Overview

Geosyntec has an exciting opportunity for an Experienced Remediation Engineer or Geologist (PFAS) to join its Northern California team at our offices in Oakland, Walnut Creek or Sacramento, California. This position is ideal for an experienced professional interested in leading and delivering PFAS investigations, remedial evaluations, and treatment/mitigation projects as part of our environmental site assessment, remediation, risk, and engineering practices in the region. Responsibilities include technical leadership, project delivery, permitting/regulatory coordination, and implementation of PFAS remedies. Our client base includes a diverse mix of industrial, commercial, and governmental clients. This role offers the opportunity to work at a dynamic firm, contribute to technically challenging projects, and collaborate with industry‑leading professionals.

Geosyntec is an innovative, international engineering and consulting firm serving private and public‑sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure. Our engineers, scientists, technical and project employees serve our clients from offices across the world. Ranked by ENR as one of the top environmental engineering design firms, Geosyntec is internationally known for its technical leadership, broad experience, and exceptional client service.

We invest in our people. Each employee is unique, and your career at Geosyntec will be too. We offer competitive pay and benefits, and well‑being programs to support you and your family.

Essential Duties and Responsibilities

• Manage PFAS and remediation projects and tasks, including scope development, work planning, budget and schedule management, QA/QC, subcontractor oversight, and client communication to achieve technical and financial objectives.
• Develop PFAS conceptual site models (CSMs) and investigation strategies, including multi‑media sampling programs (e.g., soil, groundwater, surface water, sediment, porewater, and biota, where applicable), source identification, and fate and transport considerations.
• Lead the preparation of PFAS work plans and technical memoranda; evaluate and interpret analytical data (including method selection/limitations and data validation); perform screening‑level and refined assessments to support remedy selection; and develop clear, defensible conclusions and recommendations.
• Oversee pilot studies and full‑scale PFAS remedy implementation, including evaluation and design of treatment systems, source control measures, contractor procurement, permitting, construction oversight, commissioning, and operations & maintenance (O&M) support.
• Prepare and review technical deliverables (reports, letters, memoranda, sampling and analysis plans, RI/FS documentation, remedial action plans, treatability study reports, design documents/specifications, O&M plans, and proposals); provide technical review/approval of project team work products.
• Support growth of a PFAS/remediation client base by leading proposal development, pursuing repeat work, identifying new opportunities, and following through on personal business development goals.
• Develop and maintain strong relationships with clients, regulators, and other stakeholders; communicate PFAS concepts, findings, uncertainty, and remedy options clearly and credibly.
• Mentor, support, and motivate early career staff in technical delivery and project performance, including PFAS sampling programs, data quality review, remedy evaluations, client expectations, and career growth.
• At times, this position may also include fieldwork such as multi‑media sampling (soil, groundwater, surface water, sediment), oversight of drilling and well installation, contractor oversight, and support of treatment/remediation system construction, operations, and maintenance.
• Drive personal or company, and rental vehicles to client or company project or office sites, and other business locations, as needed.

Education and Licensure

• Bachelor's degree in engineering (civil, chemical, or environmental preferred), geology, or environmental science. (required)
• Advanced degree in the same. (preferred)
• Professional Engineer (PE) or Professional Geologist (PG) licensure in California. (required)

Skills, Experience and Qualifications

• At least 7 years (8+ years preferred) of direct environmental consulting experience with a focus on PFAS investigations and remediation/treatment; or equivalent combination of education and experience. (required)
• Strong technical foundation in remediation (required), with demonstrated competency in PFAS investigation approaches, fate and transport, and remedy implementation. (required)
• Experience managing projects, including responsibility for resource allocation, quality, technical oversight, subcontractor/contractor coordination, and financial management. (required)
• Thorough understanding of CalEPA and USEPA regulations and guidance relevant to PFAS and remediation (required), including experience working with state/local oversight agencies and drinking water/wastewater stakeholders as applicable.
• Experience mentoring and managing professional staff. (required)
• Excellent technical leadership of multi‑disciplinary teams. (required)
• Experience with PFAS analytical methods, data validation/QA/QC, and interpretation considerations. (required)
• Ability to succeed in a fast‑paced consulting environment, handling multiple project assignments, meeting strict deadlines, and traveling to client facilities as needed. (required)
• Excellent writing and communication skills. (required)
• Field work and overnight travel may be required.
• Health & Safety training, medical monitoring, and client‑driven drug and background testing may be required.
• Valid U.S. driver’s license and a satisfactory driving record for business travel. (required)

This opportunity will be posted for at least five days. Below are the potential compensation ranges that we in good faith believe are applicable for this role at the time of this posting and are only applicable for jobs to be performed in the specified location(s) below. The typical base salary range for this position is just one component of Geosyntec's total compensation package for employees. Actual compensation will be determined based on education, experience, skill set and location.

• Minimum Salary: $106,275/year / Maximum Salary: $188,960/year (Oakland, Walnut Creek)
• Minimum Salary: $101,650/year / Maximum Salary: $180,745/year (Sacramento)

We offer a comprehensive benefits package including paid holidays, vacation, sick, and personal paid time off, medical, dental, vision, life, and disability insurance, 401(k), and other benefits to eligible employees.