Principal Environmental Engineer

Why Farallon?

As a 100% employee‑owned firm, Farallon is built on a shared purpose and long‑term commitment. Our people are the reason clients trust us with their most complex environmental challenges—from high‑stakes remediation projects to regulatory negotiations that shape communities. When you join Farallon, you join a team of scientists and engineers who take pride in delivering technically sound, defensible, and practical solutions.

You’ll work alongside industry leaders who are shaping the future of environmental consulting across the West Coast. Your expertise will directly influence project outcomes, client relationships, and the continued growth of our employee‑owned firm.

You’ll collaborate across disciplines, mentor emerging professionals, and serve as a trusted advisor to clients navigating technical, regulatory, and business challenges. This role is ideal for someone who thrives on solving difficult problems, building strong client relationships, and elevating engineering practice across a team. This full‑time, exempt, hybrid role may be based in either our Seattle or Bellevue, Washington locations.

• Originate and grow client relationships while identifying new opportunities across Farallon’s core practice areas.
• Develop cleanup strategies grounded in strong conceptual site models and regulatory insight.
• Prepare and oversee feasibility studies, pilot testing, remedial system design, bid specifications, and engineering drawings.
• Develop and review remedial cost estimates across the lifecycle of a project.

• Lead multidisciplinary teams through site assessment, investigation, remedy selection, construction, and closure.
• Manage project scope, budget, schedule, and quality across multiple complex projects.
• Ensure technical excellence in deliverables including RI/FS reports, Cleanup Action Plans, Engineering Design Reports, and Cleanup Action Reports.
• Maintain strong relationships with clients, regulators, and project partners.

• Mentor, coach, and develop staff engineers and scientists.
• Support business development initiatives across the firm.
• Foster a culture of safety, quality, and continuous improvement.

Other Duties:
This job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities. Duties, responsibilities, and activities may change at any time with or without notice.

• ABET‑accredited BS or MS in civil or environmental engineering.
• Professional Engineer (PE) license in Washington. 15+ years of environmental consulting experience, including investigation, remediation system design, and implementation.
• Strong engineering design capabilities across multiple contaminants and remedial technologies (air sparge, SVE, MPE, in‑situ treatment, excavation, engineering controls).
• Experience developing cleanup strategies and associated cost estimates.
• Working knowledge of MTCA, RCRA, CERCLA, and related regulatory guidance.
• Experience with VCP cleanups.
• Permitting experience (PSCAA, CSGP, NPDES, local jurisdictions).
• Experience communicating with Local, State, and Federal regulators.
• Proven ability to manage multidisciplinary teams and complex projects.
• Strong written and verbal communication skills, including preparation of proposals and technical reports.
• Ability to collaborate with internal teams on business development strategies.
• Experience developing new clients or practice areas.

• Familiarity with GIS, data management, and analytical methods.
• Experience with PFAS, air compliance, sediment remediation, or stormwater permitting.
• Knowledge of SPCC, SWPPP, Industrial Stormwater Permits, or Sand & Gravel Permits.

We believe taking care of our people is the best way to take care of our clients and Farallon is proud to offer comprehensive benefits to meet the diverse needs of our employees.

• Ownership:
  Participation in our Employee Stock Ownership Plan (ESOP).
• Health & Wellness: 100% employer‑paid premiums for medical, dental, and vision for employees.
• Retirement: 401(k) with up to a 4% company match.
• Time Off:
  Flexible vacation (10–30 days), 9 paid holidays,…