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Sr. Water/Wastewater Engineer

Plummer Associates, Inc.
Denver, CO Full Time
POSTED ON 12/19/2025
AVAILABLE BEFORE 1/19/2026
Seeking a Sr. Water/Wastewater Engineer

Plummer has Impact

At Plummer, we're passionate about solving water and telecommunication challenges and serving our customers with excellence and integrity. As an engineering consulting firm, we take on a variety of interesting projects to help growing communities in Texas, Oklahoma, Colorado, and Florida.

People are Precious

Plummer has a culture that cares for people. We are all driven by our powerful mission to improve our environment, advance communities and serve others. Our team members are always striving for technical excellence and we enjoy collaborating to creatively solve provide solutions to unique challenges. Plummer provides a learning environment that fosters growth and encourages asking questions.

What You Are Empowered To Accomplish

Plummer is looking for a seasoned Water/Wastewater Engineer to join our Treatment Team in Denver, CO. This is an exciting opportunity to design and manage all aspects of a project including planning evaluation, technical process mechanical design, and construction administration. The Senior Water/Wastewater Engineer will be responsible for managing small to midsize design tasks, engineering drawings, calculations, and P&IDs with the support of junior staff. The Engineer will also be responsible for schedule and financial management of projects and will also establish and maintain strong working relationships with clients.

Our Ideal Teammate

  • Our ideal teammate will have at least 10 years of professional experience.
  • At least 4 years of this experience must be as a licensed PE working on water, and/or wastewater treatment-type work such as treatment plant expansion, rehab, and planning.
  • This position requires a bachelor’s degree in civil or environmental engineering and Professional Engineer (PE) licensure.
  • This position may require up to 10% travel to clients within Colorado.
  • Our ideal teammate will have a firm understanding of the engineering fundamentals as they relate to hydraulics and pump stations, wastewater design aspects such as preliminary and primary treatment, biological nutrient removal (BNR), solids treatment and odor control, the associated regulatory requirements, hydraulics and pump stations, water treatment design aspects such as flocculation, sedimentation, filtration, and disinfection; PFAS treatment and water reuse.
  • We are seeking a strong communicator with leadership skills and the ability to collaboratively plan, problem-solve, and follow-through on projects.

Salary Range: $135,000—$165,000

Meaning And Rewards

One of the best parts of working at Plummer is knowing that at the end of the day we’ve done something positive to improve communities. Plummer also strives to provide a rewarding and balanced work atmosphere with a generous benefits package which includes:

  • Medical, Dental, Vision, and Life Insurance
  • 401K with Company Match
  • HSA/FSA options
  • PTO, Vacation Days, and Holidays
  • Parental Leave
  • Tuition and Professional Development Reimbursement
  • Telecommuting and Flexible Work Schedules
  • Wellness Program
  • Annual Bonus Opportunities
  • Company paid Short Term and Long Term Disability options
  • Company paid life insurance with the option to purchase supplemental coverage

Salary : $135,000 - $165,000

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