Commissioning Engineer

Job Description:
Commissioning Engineer

Terex Washing Systems is seeking a Commissioning Engineer to provide technical expertise and first-class support to our dealers and customers across North America. In this field-based role, you will lead the startup, testing, optimization, and handover of OEM aggregate washing equipment, including wash plants, log washers, classifying tanks, cyclones, dewatering screens, pumps, and water-management systems. You will work closely with our Operational Service Manager, Sales, and Engineering teams to ensure equipment is installed correctly, performs to specification, and meets production, quality, and safety expectations at customer sites.

What You'll Do

• Lead commissioning and startup activities for aggregate washing systems, including mechanical, electrical, hydraulic, controls, and water-system verification.
• Install, test, and optimize equipment such as pumps, piping, valves, tanks, conveyors, screens, cyclones, spray bars, and related structural components.
• Perform functional testing and performance tuning to support target production levels, product quality, throughput, water usage, and fines recovery.
• Troubleshoot mechanical, electrical, controls, water-flow, pump-priming, vibration, alignment, and material-carryover issues.
• Interpret mechanical drawings, P&IDs, electrical schematics, OEM manuals, and installation documentation to verify proper setup and flow paths.
• Work with customers, contractors, plant managers, electricians, project managers, and internal teams to coordinate safe and successful commissioning activities.
• Train customers and operators on equipment startup, shutdown, maintenance, safety, and best-practice operation.
• Prepare accurate service records, commissioning reports, test results, punch lists, performance data, and parts usage documentation.
• Provide routine preventive maintenance guidance and emergency technical support on-site or remotely.
• Follow all safety protocols, customer site requirements, and applicable MSHA/OSHA standards during commissioning and field service work.

What We're Looking For

• High school diploma or GED required.
• Technical certificate or associate degree in Industrial Maintenance, Mechanical Engineering Technology, Mechatronics, Electrical Technology, or a related field preferred.
• 3-7 years of experience in aggregate equipment, mineral processing, industrial machinery, OEM field service, heavy equipment installation, or a related environment preferred.
• Hands-on commissioning, installation, or field service experience with wash plants or similar industrial systems.
• Strong mechanical aptitude, including experience with pumps, piping, valves, tanks, conveyors, screens, structural components, rigging, lifting, cranes, telehandlers, and safe positioning of large equipment.
• Working knowledge of motors, sensors, control panels, PLC systems, MCCs, VFDs, industrial control logic, wiring diagrams, and electrical schematics.
• Understanding of water-flow systems, pump curves, spray bars, cyclone pressure, slurry transport, and related hydraulic or process fundamentals.
• Ability to read and interpret mechanical drawings, P&IDs, electrical schematics, OEM manuals, and technical documentation.
• Strong troubleshooting, diagnostic, communication, and customer-service skills.
• Demonstrated working knowledge of Microsoft Outlook and Word.
• Must be able to pass a motor vehicle record check and obtain a U.S. passport.

Location and Travel

This position is ideally based in Louisville, Kentucky; however, candidates may reside anywhere in the United States if they live within 30 miles of a major airport to support required travel. This role requires travel to customer sites, including quarries, mines, and sand and gravel operations, for multi-day commissioning assignments.

Why Join Terex?

• Be part of a global company guided by our values: Integrity, Respect, Improvement, Servant Leadership, Courage, and Citizenship.
• Join a team where safety is an absolute way of life and every team member is expected to contribute to Zero Harm.
• Work in an inclusive environment where team members are supported, valued, and encouraged to reach their full potential.
• Help make a positive impact through innovative solutions, engaged people, and sustainable operations.
• Collaborate with a forward-looking team focused on building a better world for future generations.
• Receive competitive compensation and benefits, including a team member bonus, healthcare, paid holidays, generous 401(k) match, and life insurance.

How to Apply

To apply for this role and view all available positions at Terex, please visit our careers page:

Terex is an equal opportunity employer, and appointments are based on merit. We value diversity and welcome applications from all sections of our community. If you are interested in this opportunity but do not meet every qualification listed, we still encourage you to apply.

This description is intended to provide a general overview of the position and is not exhaustive. Additional duties may be assigned in accordance with business needs.

If you are interested in an open position but feel you may not meet all the listed qualifications, we still encourage you to apply.

About Terex:

Terex Corporation is a global leader in specialized equipment solutions, serving essential sectors such as emergency services, waste and recycling, utilities, and construction. Our diversified portfolio positions us in resilient, high-demand markets with strong long-term growth potential.

We design and manufacture advanced specialty vehicles-including fire, ambulance, and recreational vehicles-alongside waste collection vehicles, materials processing machinery, mobile elevating work platforms, and equipment for the electric utility industry. Through our global dealer, parts and service network and true value-creating digital solutions, we deliver best-in-class lifecycle support, helping customers maximize return on investment.

With a strong manufacturing footprint in the United States and operations across Europe, India, and Asia Pacific, Terex combines global reach with local expertise to capture opportunities worldwide. Our strategy is clear: exceed customer expectations, invest in innovation, leverage our diversified portfolio, and deliver consistent, profitable growth for our shareholders.

For more information, please visit

Additional Information:

We are passionate about producing equipment that helps improve the lives of people around the world and providing our team members with a rewarding career and the opportunity to make an impact. We are committed to recruiting, engaging, developing, and retaining team members at all levels of our global workforce. Our culture is defined by our Terex Way Values - Integrity, Respect, Improvement, Servant Leadership, Courage, and Citizenship. Our values are the driving force behind our commitment to maintain an inclusive, supportive, non-discriminatory, and safe workplace for all team members. To that end, we are committed to actively foster a culture where every team member feels valued, listened to, and appreciated. We are committed to being fair and impartial in our decisions. As an Equal Opportunity Employer, employment decisions are made without regard to race, color, religion, national origin, sex, sexual orientation, gender identity or expression, age, disability, protected veteran status or other characteristics protected by law. If you are a qualified individual with a disability, including disabled veterans, you may request a reasonable accommodation if you are unable or limited in your ability to access job openings or apply for a job on this site as a result of your disability. You can request reasonable accommodations by contacting the recruiting department (person or department) at View email address on click.appcast.io.


The Company offers competitive salaries, advancement opportunities, and a full range of benefits, including paid vacation, 401(k), medical, dental, and vision.