Senior Project Engineer

Senior Project Engineer - Water/Wastewater Focus

Founded in 1973, DJ&A is a multidisciplinary professional services consulting firm with office locations in Montana, Colorado, Washington, South Dakota, New Mexico, and Nevada. Our team of more than 180 professionals works across the country to deliver a diverse range of engineering, environmental survey, mapping, landscape architecture, and planning projects for federal, state, local, tribal, and private clientele.

DJ&A's Civil Engineering & Design (CE&D) Group is seeking a full-time Senior Project Engineer with a strong background in water and wastewater to join our growing team. The ideal candidate will have at least 10 years of progressive experience leading complex water/wastewater projects. This role requires advanced technical expertise, strong project delivery skills, and the ability to mentor and guide internal project teams from project concept through construction.

• Water and wastewater treatment
• Pump stations and lift stations
• Water distribution and wastewater collection systems
• Engineering analyses, feasibility studies, and cost estimating

• Serve as the technical design lead on complex water, wastewater, and stormwater projects.
• Independently perform and oversee detailed engineering analyses, hydraulic modeling, and calculations.
• Lead the preparation of design documents, plans, specifications, and reports.
• Conduct quality assurance/quality control (QA/QC) reviews of project deliverables.
• Develop engineering reports, feasibility studies, and construction cost estimates.
• Collaborate closely with Project Managers to ensure project success.
• Mentor junior engineers and provide technical guidance to project teams.
• Support business development by contributing technical expertise in proposals and client meetings.

• Bachelor's degree in Civil or Environmental Engineering from an ABET-accredited program (required).
• Minimum of 10 years of engineering experience with a focus on water and wastewater infrastructure.
• Licensed Professional Engineer (PE) (required).
• Proficiency in AutoCAD Civil 3D, hydraulic modeling software, and Microsoft Office Suite.

• Ability to sit, stand, and use computer equipment for extended periods.
• Occasional travel to project sites, including outdoor environments and construction areas.
• Ability to lift up to 25 lbs. occasionally.

• $45-$55/hr. depending on experience.
• Comprehensive benefits package including:
  • Medical insurance
  • 401(k) with employer contribution
  • Paid time off and holidays
  • Professional development support, including licensure and training
  • Flexible work schedule

• This position may be based in Missoula, MT;
  Bozeman, MT; or Denver, CO.

We are proud to be an Equal Opportunity Employer. For more information, please visit the EEO website here.

DJ&A is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If you need assistance or an accommodation due to a disability, you may contact us at