Operation & Maintenance Technician/Engineer – UPW Plant

The Ultra-Pure Water+ division of Ecolab is an engineering company specialized in ultrapure water (UPW) treatment systems.

We are looking for an Operation & Maintenance Technician/Engineer – Ultra Pure Water (UPW) Plant to be based in Marin-Epagnier (CH) is reporting to Operation & Maintenance Manager. The candidate should have technical expertise, problem solving capabilities and understanding of critical utility systems, particularly in process environments (preferably in water treatment systems).

Joining Ultra-Pure Water+ means being part of a global team of innovative and passionate professionals who are committed to preserving water, our planet's most critical resource. It also means combining our efforts and talents towards a more sustainable future – together.

Role Summary

In this role, you will be responsible for preventive and corrective maintenance, troubleshooting, and data collection for UPW systems. You will play a key role in ensuring system reliability through timely and effective support in a critical manufacturing environment.

How you'll make an impact:

- Support commissioning, start-up and installation of new equipment, upgrades and plant modifications.
- Execute daily field rounds, collecting operational and process data, and reporting anomalies through established procedures.
- Perform daily, preventative and corrective maintenance on water treatment equipment and ancillary systems.
- Monitor plant performance and support process optimization initiatives to ensure compliance with operational and quality targets.
- Troubleshoot and diagnose mechanical, electrical, instrumentation and process-related faults, ensuring timely restoration of plant operations.
- Ensure accurate completion of maintenance records, inspection reports and operational documentation.
- Perform Water quality sampling and field analysis.
- Perform basic calibration, inspection and troubleshooting activities on instrumentation and control systems.
- Utilize and maintain Computerized Maintenance Management System CMMS systems for work order management, maintenance planning, asset history tracking and reporting.
- Participate in root cause analysis (RCA) investigations and contribute to continuous improvement initiatives.
- Maintain work areas, workshops, equipment and storage locations in accordance with 5S principles, ensuring high standards of housekeeping, safety and operational efficiency.
- Operate in full compliance with company procedures, environmental regulations, quality requirements and HSE standards, maintaining a strong focus on safety, operational excellence and customer satisfaction.

Qualifications:

- Technical background in Mechanical, Electrical, Industrial Maintenance or a related field.
- Experience in operation and maintenance activities within industrial facilities, preferably in water or wastewater treatment plants.
- Strong troubleshooting and problem-solving skills.
- Ability to interpret technical documentation, procedures and drawings.
- Familiarity with computerized maintenance management systems (CMMS).
- Basic knowledge of instrumentation, automation and process control systems.
- Strong attention to safety, environmental compliance and quality standards.
- Good organizational skills and attention to detail.
- Ability to work both independently and as part of a multidisciplinary team.
- Positive attitude, flexibility and willingness to learn and develop new skills.
- Commitment to maintaining high housekeeping standards and promoting a 5S culture.
- Readiness for “On call support” for customer sites

Working Conditions:

- Availability to work on an 8.30-hour basis per day including minimal mandatory presence 08h30-12h00 / 13h30-17h00, 5 working days a week
- Occasional traveling within EU and CH for trainings, meetings, presentations, coordination and reviews.
- Expected language skills: Good French, minimum B2 level , English B2
- Valid Category B driving license

What's in it for you:

- An interesting and varied job in an exciting and innovative organization operating worldwide
- The possibility to further develop your personal skills and to earn profound project management experience
- Training and professional development opportunities
- 24 days of holidays, 6 additional flex days, and possibility of extra holidays
- A competitive salary and insurances for accidents, disability and pension

Careers Advancing Ovivo Ultra-Pure Water+ by Ecolab’s Water Technology Solutions

Help shape the future of water and technology by joining a team that drives innovation in ultrapure water solutions —critical to industries powering global progress. These careers offer the chance to make an impact that matters solving complex challenges, collaborating across borders, and creating solutions that protect vital resources. If you’re passionate about water circularity, sustainability and technology, explore opportunities where your expertise fuels advancement and your growth is supported.

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Ecolab is committed to fair and equal treatment of associates and applicants and furthering the principles of Equal Opportunity to Employment. We will recruit, hire, promote, transfer and provide opportunities for advancement based on individual qualifications and job performance in all matters affecting employment, compensation, benefits, working conditions, and opportunities for advancement. Ecolab will not discriminate against any associate or applicant for employment because of race, religion, color, creed, national origin,citizenship status, sex, sexual orientation, gender identity and expressions, genetic information, marital status, age, or disability.