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Senior Engineer - Environmental Site Investigation & Remediation

Terracon

Company : Terracon

Location : Portland, OR, 97204

Posted Date : 2 October 2025

Job Details


Job Description
Are you an exceptional Environmental Site Investigation/Remediation (SI/REM) Engineer Professional looking for an opportunity to grow and expand your career and lead the growth and expansion of our Portland Team? Do you want to work for a well-established, nationwide company with an excellent reputation for taking care of its employee-owners while providing excellent professional growth potential? If you answered Yes, come "Explore with us" and start your journey as a Senior Geologist in our Portland Oregon office!
This position is based out of our Portland, OR office and will work closely with our Seattle location on project with a diverse client base in both public and private sectors, working with commercial, industrial, government, property development, and institutional market entities.
Responsibilities
In this role, you will work closely with the Environmental Group Manager and Office Manager, supervising both office and regional SI/REM teams to ensure that all work is completed on time, within budget, and meets our clients' expectations.
  • Collaborate with the team to prepare winning proposals for projects involving standard site investigation, site characterization, and remediation opportunities.
  • Manages scope, schedule, and budget for projects ranging from due diligence subsurface investigations to complex cleanups, monitors activities, and allocates resources to ensure client objectives are met.
  • You will coach and mentor SI/REM staff on quality data generation and reporting, driving consistent excellence.
  • Lead the daily operations of our growing team, focusing on safety, staff training and development, the quality of our services and work products, and enhancing the client experience.
  • Work with the office and regional leadership team on market engagement, client development, service expansion, marketing activities, and the recruitment, mentoring, and development of environmental professionals to support growth.
  • Designing and implementing site characterization and remediation approaches.
  • Projects may include soil removal actions, soil vapor assessments, as well as groundwater remediation systems.
  • Support multi-disciplinary teams in the scoping and preparation of Remedial Investigations and Feasibility Studies (RI/FS), development of Conceptual Site Models, Corrective Action Plans (CAPs), Remedial Action Plans (RAPs), Voluntary Cleanup Program (VCP) applications, and monitoring remedial systems performance.
  • Partners with other departments and offices to secure specialized resources for projects.
  • Conducts project meetings and prepares reports to communicate the status of a project.
  • Coordinates financial management of business intelligence, invoicing, and collections with accounting.
  • Develops an understanding, and is aware of, project-related risks and associated risk mitigation. Knows Company risk management policies.
  • Career level, fully competent professional responsible for the planning, designing, scheduling, implementing, and managing technical scopes of work related to advanced site characterization methods.
  • Leads development of proposals and scopes of work for complex site investigations to assess soil, groundwater, soil vapor, and indoor air sampling for sites impacted by organic and inorganic contaminants. Uses innovative investigative techniques to complete work.
  • Designs, documents, and supervises the installation of remediation systems (soil, groundwater, and vapor) and operation and maintenance (O&M) of remediation systems and provides supervision and technical support to team implementing work.
  • Applies standard practices and techniques in specific situations, adjusts and correlates data, recognizes discrepancies in results, and follow operations through a series of related detailed steps or processes.
  • Assists in continuous quality monitoring and improvement for projects and Terracon policies and procedures used for conducting site investigations, remedial design and implementation fieldwork, and preparation of associated deliverables.
  • Will be expected to be proficient in client management, client development, and driving environmental sector growth locally and nationally.
  • Lead safety efforts for team and ensure team follows safety rules and guidelines. Responsible for creating and modeling a safe work environment; demonstrates safety practices. Promote pre-task planning for all projects.
  • Participate in developing marketing strategies and presenting qualifications to clients on a project and/or client basis.
Requirements:
  • Understanding of Oregon State UST and Environmental Cleanup Programs, as well as an understanding of Washington State Model Toxics Control Act cleanup regulations.
  • Bachelor's degree in Engineering.
  • Minimum of 8-10 years of demonstrated experience in environmental field investigations, remedial design, and implementation with an environmental, engineering, or remedial construction focus
  • Professional Engineer (PE) registration.
  • Valid driver's license and acceptable driving record.
  • High level of verbal and written communication skills
  • Demonstrated high level of technical writing ability. Must provide authored technical documents upon request.
  • Strong organizational skills, verbal and written communication.
  • Completed OSHA 40-hour HAZWOPER training
#LI-AR1 About Terracon
Terracon is a 100 percent employee-owned multidiscipline consulting firm comprised of more than 6,000 curious minds focused on solving engineering and technical challenges from more than 175 locations nationwide. Since 1965, Terracon has evolved into a successful multi-discipline firm specializing in environmental, facilities, geotechnical, and materials services. Terracon's growth is due to our talented employee-owners exceeding expectations in client service and growing their careers with new and exciting opportunities in the marketplace.
Terracon's vision of "Together, we are best at people" is demonstrated through our excellent compensation and benefits package. Based on eligibility, role and job status, we offer many programs including medical, dental, vision, life insurance, 401(k) plan, paid time off and holidays, education reimbursement, and various bonus programs.
EEO Statement
Terracon is an EEO employer. We encourage qualified minority, female, veteran and disabled candidates to apply and be considered for open positions. We do not discriminate against any applicant for employment, or any employee because of race, color, religion, national origin, age, sex, sexual orientation, gender identity, gender, disability, age, or military status.

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