MWH is a leading water and wastewater treatment-focused general contractor in the US with a rich history dating back to the 19th century. Fueled by the mission of Building a Better World, our teams are rapidly growing across the nation.

As a company committed to our team's well-being and growth, we offer a supportive work environment, opportunities for advancement, and the chance to contribute to a mission that shapes the future. Your expertise and ambition are valued here.

The work we do matters. The critical systems infrastructure we build changes lives, betters' communities, and improves ecosystems. If you're passionate about this, we want to hear from you!

About the Role

MWH is currently seeking a qualified Project Engineer to support the mechanical scope of work on a critical water treatment plant construction project in Gresham, Oregon.

Essential Functions

The Project Engineer – Mechanical supports the planning, coordination, and execution of a defined mechanical construction package on a water treatment plant (WTP) project. This role focuses on process piping, mechanical equipment installation, subcontractor coordination, and commissioning support, critical to treatment plant operations.

The Project Engineer works closely with the Project Manager, Superintendent, mechanical subcontractors, engineers, inspectors, and owner representatives to ensure work is completed safely, in compliance with contract documents, and aligned with project schedule and budget.

This position is intended for professionals with 2–6 years of experience in mechanical construction within water/wastewater, industrial, or process facility environments.

Package Specific Mechanical Scope: A typical mechanical scope may include, but is not limited to:

• Pumps, blowers, mixers, and treatment process equipment
  Valves, gates, actuators, and appurtenances
• Chemical feed systems and storage equipment
• HVAC systems serving treatment facilities
• Mechanical equipment installation, alignment, and testing

Key Responsibilities

• Support planning, coordination, and execution of the mechanical package
• Assist with RFIs, submittals, shop drawings, O&M manuals, and as-built documentation.
• Coordinate daily activities of mechanical subcontractors with field supervision.
• Track quantities, production, and installation progress. Support inspections, testing, and quality control documentation.
• Assist with the procurement of mechanical equipment and tracking of long-lead items.
• Support cost tracking, forecasting, and change management activities.
• Participate in startup, commissioning, and system turnover activities.
• Promote jobsite safety and compliance with project safety plans.

Required Experience & Knowledge

• 2–6 years of experience as a Project Engineer, Field Engineer, or similar role.
• Experience supporting mechanical scopes on water or wastewater treatment facilities.
• Ability to read and interpret mechanical drawings, P&IDs, isometrics, and specifications.
• Familiarity with pumps, valves, piping systems, and treatment process equipment.
• Basic understanding of commissioning, testing, and system turnover.
• Working knowledge of construction cost control and change. management

Education

• Bachelor’s degree in Construction Management, Mechanical Engineering, or related field (Equivalent field experience may be considered in lieu of degree)

Skills & Competencies

• Strong organizational and documentation skills.
• Effective communication with field crews, subcontractors, and engineers.
• Detail-oriented with strong follow-through.
• Ability to manage multiple priorities in an active treatment plant environment.
• Proficiency in Microsoft Office; experience with CMiC, Procore, Bluebeam, or similar systems preferred

Benefits

• Group health & welfare benefits including options for medical, dental and vision
• 100% Company Paid Benefits: Employee Life Insurance & Accidental Death & Dismemberment (AD&D), Spouse and Dependent Life & AD&D, Short Term Disability (STD), Long Term Disability (LTD), Employee Assistance Program and Health Advocate
• Voluntary benefits at discounted group rates for accidents, critical illness, and hospital indemnity
• Flexible Time Off Program (includes vacation and personal time)
• Paid Sick and Safe Leave
• Paid Parental Leave Program
• 10 Paid Holidays
• 401(k) Plan (company matching contributions up to 4%).
• Employee Referral Program

MWH Constructors is a global project delivery company in heavy civil construction with a focus on water and wastewater treatment infrastructure. With the ultimate goal of delivering maximum value to clients and their local communities, MWH Constructors provides single-source, integrated design and construction services through a full range of project delivery methods. Incorporating industry-leading preconstruction and construction services, the Company’s multi-disciplined team of engineering and construction professionals delivers a wide range of projects, including new facilities, infrastructure improvement and expansion, and capital construction services.

Equal Opportunity Employer, including disabled and veterans.

Please note that all positions require pre-employment screening, including drug and background check, as a condition of employment.

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