Senior Project Engineer- RNG

Portland, Maine

Piper Maddox
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Our client is one of the most established clean energy developers in the US. They develop, construct, and operate renewable energy projects focused on driving decarbonization and energy resilience.


They're looking for a Senior Project Engineer to join their high-impact RNG engineering team, supporting Landfill, Dairy, & WW RNG projects across the U.S.


What They're Looking For:

  • Bachelor's in Mechanical Engineering + over 8 years of experience
  • MUST have experience working on RNG projects
  • PE is highly preferred, but willing to bring on candidates with EIT/FE

What You'll Be Doing:

  • Review engineering plans, specs, and schedules with a focus on safety and cost optimization.
  • Prepare and update PFDs, P&IDs, BOMs, and other key documentation. Perform and review design calculations; develop equipment and material specs.
  • Contribute to plant layout and general arrangement drawings, ensuring safety and code compliance.
  • Collaborate with project management, engineering, and vendor teams to ensure constructability, reliability, and process optimization.

Why You'll Love this Opportunity:

  • Work in a hybrid environment, based in Portland, ME (or Charlotte, NC.)
  • 25% travel- you'll stay connected to the projects without living out of a suitcase
  • $120,000-$150,000 base salary + annual & project-based bonuses.
  • Full Medical, Dental, Vision, & 401k match.
  • Parental leave & tuition reimbursement.
  • Public company with long-term stability & diverse portfolio across energy efficiency, solar, CHP, and microgrids (not just RNG)
  • Highly supportive & collaborative global team, minimal red tape, and growth into PM or technical leadership.

Date Posted: 06 June 2025
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