At Waterleau , we’re on a mission to protect our planet’s ecosystem through cutting-edge water technology. As a global leader in sustainable water solutions, we’re expanding fast — and we’re looking for passionate, hands-on professionals who want to make a tangible impact in a world of innovation and environmental purpose.

Your Role: Commissioning & Start-Up Engineer

Based from our office in Porto, Portugal, you'll become part of our Engineering team, bringing industrial water treatment installations to life across the globe. From validating systems and troubleshooting technical challenges to optimizing plant performance, you'll play a key role in the successful transition from construction to operation.

Working closely with our process, automation and project engineers, you'll ensure every installation performs according to design and exceeds customer expectations.

What You'll Do

Execute pre-commissioning and commissioning activities, including loop checks, functional testing and system start-up.
Verify that process design, automation logic and on-site conditions align, identifying and resolving discrepancies where needed.
Troubleshoot and optimize mechanical, electrical, process and automation-related systems to achieve stable and efficient plant operation.
Collaborate with multidisciplinary project teams throughout the commissioning phase.
Act as the technical point of contact for customers during start-up, providing guidance and ensuring a smooth commissioning process.
Prepare commissioning reports and support the successful handover of installations to operations.

What You Bring

A Bachelor's or Master's degree in Process Engineering, Chemical Engineering, Mechanical Engineering, Industrial Automation or another relevant technical field.
0–5 years of experience in commissioning, start-up, process engineering or industrial project environments.
A good understanding of process equipment, instrumentation and industrial automation; familiarity with PLC/SCADA systems is an advantage.
The ability to read and interpret P&IDs, electrical schematics and functional descriptions.
A proactive, hands-on mindset with strong analytical and problem-solving skills.
Excellent communication skills and the ability to collaborate in multidisciplinary and international teams.
A customer-focused attitude and the confidence to build strong relationships on-site.
A willingness to travel internationally and work on customer sites for extended periods.
Fluent in English; additional languages are a plus.

What We Offer

A chance to contribute directly to a cleaner planet through meaningful work.
Exposure to innovative water treatment projects across the globe.
Ongoing training and development opportunities to grow your technical expertise.
A competitive salary package with attractive benefits.
A supportive and international company culture focused on innovation, teamwork and sustainability.

Ready to make every start-up count?

Join Waterleau and help us turn technology into a force for a cleaner, greener world.

Start-up & Commissioning Engineer

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