Senior Environmental Due Diligence Manager

About Parametrix

Parametrix is a 100% employee‑owned consulting firm helping clients deliver resilient infrastructure, vibrant and livable communities, and environmentally sustainable solutions. We are a team of professional construction managers, engineers, management consultants, planners, scientists, and surveyors dedicated to delivering outstanding client service. We build lasting partnerships and collaborate with our clients to envision possibilities and create tomorrow, together.

Recognized as a top workplace, we’re committed to a culture that values work‑life balance, professional growth, and the well‑being of our people.

We are looking for a Senior Environmental Professional to join our Environmental team leading and managing a portfolio of due diligence projects. This position will be based in Oregon with options to be located in Portland, Bend, Eugene or Ashland. This role will oversee due diligence assessments for complex transportation projects, municipalities, and industrial clients.

• 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.

• 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.

As a 100% employee‑owned company, you will share in and contribute to Parametrix’s success. You will earn stock in your Employee Stock Ownership Plan (ESOP) account and be an important contributor to our collective achievements.

Our Benefits include:

• 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

Exciting, Award‑Winning Project Work:
Our work earns recognition for its innovation and positive impact on communities, giving you the opportunity to contribute to projects that make a difference. Learn more at

Flexible Work Arrangements:
We understand the importance of work‑life balance and offer flexible work arrangements to support our employee‑owners’ diverse needs. Whether it is hybrid, remote, or in‑office, we provide options that allow you to work in a way that best suits your lifestyle while staying connected and engaged with your team.

Salary Range

$110,000—$140,000 USD

Compensation is determined by factors such as education, experience, location, and role. As employee‑owners, we are eligible for performance‑based bonuses and our salaries are reviewed annually. We value transparency and look forward to discussing our compensation structure.

Parametrix is committed to being an inclusive workplace, where team members of all backgrounds and experiences are welcome. As an equal opportunity employer, it is our policy and culture to provide opportunities to all persons based on merit and fitness to perform job…