Water​/Wastewater Senior Project Engineer

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Full Time Engineering Bozeman, MT, US

3 days ago Requisition

Salary Range: $93,600.00 To $ Annually

Founded in 1973, DJ&A is a multidisciplinary professional services consulting firm with office locations in Montana, Colorado, Washington, New Mexico, and Nevada. Our team of more than 180 professionals works across the country to deliver a diverse range of engineering, environmental surveys, 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 facilities
• 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 and wastewater projects.
• Lead project execution strategies to ensure profitability and client satisfaction.
• Work on multiple projects of small to moderate size or portions of major projects by planning and coordinating detailed aspects of engineering work, including engineering analysis, hydraulic modeling, and calculations.
• Well-versed in leading and preparing contract documents for bidding and construction, design documents, plans, specifications, and reports.
• Construction Administration, including coordinating and conducting submittal reviews, reviewing contractor requests for information (RFIs), and site inspections.
• Conduct quality assurance/quality control (QA/QC) reviews of project deliverables.
• Develop engineering reports, feasibility studies, and construction cost estimates.
• Experience navigating local, state and federal regulatory agencies to meet code and permitting requirements.
• Collaborate closely with Project Managers to ensure project success.
• Mentor junior engineers and provide technical guidance to project teams.
• Coordination with external suppliers and subcontractors to quote and furnish materials and services.
• 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).
• Strong knowledge and understanding of wastewater treatment processes and equipment, hydraulics, piping systems, electromechanical systems and instrumentation.
• Proficiency in AutoCAD Civil 3D, hydraulic modeling software (e.g., WaterCAD/WaterGEMS, SewerCAD, EPANET, SWMM), and Microsoft Office Suite.
• Experience working with and coordinating discipline work (civil, mechanical, structural, electrical, instrumentation, HVAC, geotech, survey, etc.) internally and externally.
• Operations experience is a plus.

• 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.

• $55–$75/hr. depending on experience.
• 401(k) with employer contribution
• Paid time off and holidays
• Professional development support, including licensure and training

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