Senior Technical Project Manager - Remediation

Are you driven to grow, lead, and make a meaningful impact? At Apex, we’re building more than a consulting and engineering firm—we’re creating a place where your career accelerates, your contributions matter, and your potential is fully realized. We believe your growth is our growth, which is why we invest in your development at every stage of your career. Here, you’ll work on projects that shape communities, protect the environment, and create lasting impact, all while being empowered with the autonomy and flexibility to do your best work.

Apex is seeking a Senior Technical Project Manager to join our Thousand Oaks, CA office.

The Senior Technical Project Manager (PM) will lead and manage complex environmental investigation, remediation, and compliance projects involving contamination in soil, groundwater, sediment, soil vapor, surface water, and other environmental media. The role requires strong technical leadership, client management, project delivery, staff development, and business development capabilities. Experience with industrial, manufacturing, petroleum, government, and brownfield remediation programs is highly desirable.

• Manage large-scale environmental investigation, remediation, and compliance projects from proposal through closure.
• Develop project scopes, schedules, budgets, work plans, and health and safety plans.
• Lead multidisciplinary teams of geologists, engineers, hydro-geologists, risk assessors, and environmental scientists.
• Monitor project financial performance, including revenue, profitability, utilization, and forecasting.
• Coordinate subcontractors, laboratories, drilling contractors, and remediation vendors.
• Maintain quality assurance and quality control standards.

• Serve as a technical lead for sites impacted by a range of chemical and petroleum-related contaminants in soil, groundwater, sediment, soil vapor, surface water, and other environmental media.
• Design and oversee:
• Site investigations and environmental assessments
• Soil and groundwater characterization
• Soil vapor and vapor intrusion assessments
• Human health and ecological risk assessments
• Remedial investigations/feasibility studies (RI/FS)
• Corrective action and site closure programs
• Evaluate and implement appropriate remediation approaches and technologies based on site conditions, regulatory requirements, and project objectives.
• Interpret environmental data, evaluate remedial alternatives, and develop practical recommendations for investigation, remediation, and long-term site management.

• Act as primary client contact for key accounts.
• Support strategic planning with industrial, manufacturing, petroleum, commercial, and government clients.
• Prepare and present technical findings to clients, regulators, and stakeholders.
• Maintain long‑term client relationships while identifying opportunities for additional services.

• Lead proposal preparation and pricing.
• Support capture planning and opportunity pursuit.
• Identify new clients and expand existing accounts.
• Participate in industry organizations and conferences.

Demonstrated experience working with:

• EPA CERCLA/Superfund programs
• RCRA Corrective Action
• State cleanup and voluntary remediation programs
• Vapor intrusion guidance
• UST and industrial facility closure programs
• Applicable federal, state, and local environmental regulations

• BS in Environmental Engineering, Civil Engineering, Geological Engineering, Hydrogeology, Geology, or related field.
• 12+ years of environmental consulting experience.
• 7+ years managing complex environmental investigation and remediation projects.
• Demonstrated success managing projects exceeding $500K to $5M+…