Senior Environmental Due Diligence Manager

Parametrix • Portland, OR

4d • Hybrid

About The Position

Parametrix is seeking a Senior Environmental Professional to join their Environmental team. This role will lead and manage a portfolio of due diligence projects, overseeing assessments for complex transportation projects, municipalities, and industrial clients. The position is based in Oregon, with options for Portland, Bend, Eugene, or Ashland. The Senior Environmental Professional will serve as the technical lead for due diligence projects, responsible for scope development, risk prioritization, and ensuring alignment with client goals and timelines. They will also act as the Environmental Professional of record for Phase I ESAs, authoring or reviewing and signing reports in compliance with ASTM E1527-21, and ensuring technical accuracy and consistency. Additionally, this role involves serving as the technical lead for hazardous materials corridor studies and preparing hazardous materials technical reports for NEPA EAs, EISs, and similar documents. A key responsibility includes providing senior-level quality control review of deliverables, focusing on regulatory compliance, data interpretation, and clear risk communication. Coordination with site investigation teams for Phase II ESAs or sampling programs is also part of the role.

Requirements

• Bachelor’s degree in Environmental Science, Geology, Hydrogeology, Environmental Engineering, or related technical discipline.
• Meet Environmental Professional qualification under 40 CFR Part 312.
• 8+ years of experience conducting and leading environmental due diligence and hazardous materials assessments.
• Strong technical writing skills with a track record of authoring and finalizing defensible, client-facing reports.

Responsibilities

• Serve as technical lead for due diligence projects, overseeing scope development, risk prioritization, and alignment with client goals and timelines.
• Serve as the Environmental Professional of record for Phase I ESAs for projects ranging from a single property to over 100 properties along a project corridor.
• Author or review and sign Phase I ESA reports in compliance with ASTM E1527-21.
• Ensure technical accuracy, defensibility, and consistency with firm standards.
• Serve as technical lead for hazardous materials corridor studies for road, bridge, public transit, and municipal projects.
• Prepare and oversee hazardous materials technical reports for NEPA EAs, EISs and similar documents.
• Provide senior-level quality control review of deliverables, with a focus on regulatory compliance, data interpretation, and clear risk communication.
• Coordinate with site investigation team to perform Phase II ESAs or similar sampling programs.

Benefits

• Comprehensive Healthcare (medical, dental, vision, short- & long-term disability insurance)
• Employee Stock Ownership Plan (financial profit sharing)
• Performance-based bonuses
• 401(k) Plan
• Paid Time Off (both vacation & sick/wellness time accruals)
• Paid Holidays
• Parental Bonding Leave

What This Job Offers

• Job Type: Full-time
• Career Level: Senior