Commissioning & Startup Engineer - MWH

MWH is a leading water and wastewater treatment‑focused general contractor in the United States 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, improves communities, and enhances ecosystems. If you're passionate about this, we want to hear from you!

MWH is currently seeking qualified candidates for the position of Commissioning & Startup Engineer to support project work.

This position will be site based in Gresham, OR, however future projects may require relocation or significant travel. As part of the Commissioning and Startup team, this role will assist in the commissioning and startup of a wastewater treatment plant and future municipal projects, helping the company minimize risks and maximize profits on turnkey and engineering services contracts. This position will report directly to the Commissioning Manager.

• Assist in the development and execution of commissioning and startup plans.
• Assist in the development of written procedures for testing, cleaning, and initial startup of major plant equipment and systems.
• Assist with client/vendor/subcontractor coordination for the startup of completed systems and provide training programs and materials for process plant equipment.
• Adapt to changing technologies and learn functionality of new equipment and systems.
• Assist in resource planning at project level.
• Assist with documentation of the commissioning process, including commissioning data and as‑built documentation, input to O&Ms and feedback to the design disciplines.
• Communicate clearly and concisely, both verbally and in writing.
• Establish and maintain effective working relationships with those contacted in the course of work.
• Recognize the importance of satisfying the customer as the key to achieving other objectives.
• Participate in the acquisition and storing of business and technical knowledge, and the use of those stored intellectual assets.
• Maintain health and safety levels during the commissioning activities.
• Recognize that health and safety considerations are central to all tasks and contribute to ensuring a safe working environment for all.
• Report safety issues responsibly and participate in improving practice.
• Ensure your own continuous professional development by participating in external networking, conferences, associations, and groups, to stay current on industry changes and innovations.
• Continue to develop personally and technically.
• Maintain a positive and solution‑oriented approach to work, providing open and honest feedback.
• Undertake such other duties, training and/or hours of work as may be reasonably required and which are consistent with the general level of responsibility of this role.
• In all internal and external contact, present a professional and positive image of the department and MWH Treatment as well as maintain mutually constructive, positive and beneficial relationships.
• Take all reasonable steps to ensure appropriate confidentiality.

• Bachelor's degree in Engineering, Construction Management, Construction Technology, Business Administration, Science, or another related field.
• 2–3 years of experience in commissioning, start‑up, and plant operations.
• Experience in the water/wastewater industry or applicable industrial construction responsibilities.
• Preference given to candidates with operations and maintenance and/or commissioning and startup background.
• Familiar with asset management programs (e.g., Maximo) for vertical assets.
• Proficient in interpreting and understanding technical manuals, drawings, blueprints, schematics, and diagrams.
• Understanding of methods and techniques for maintaining and repairing water/wastewater plant equipment, machinery, and related facilities.
• Experience with operations and…