At Ecolab, we offer you the opportunity to expand your skills and professional experience while collaborating with worldwide experts in water treatment.

As a senior process engineer, you will be under guidance of more senior engineers and will be involved in the design, optimization and continuous improvement of ultra pure water and industrial wastewater treatment systems.

Joining Ecolab 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.

The role is based in Witterswil, Solothurn, Switzerland and will require some international travelling.

How You’ll Make an Impact:

Main responsibility: Support capital projects from concept through commissioning:

• Design, calculate and optimize processes in the fields of ultrapure water and wastewater treatment, including:
• Filtration, activated carbon filters, advanced oxidation processes
• Reverse osmosis, ion exchange, EDI, UF/MF
• Degasification, UV oxidation, TOC reduction
• Chemical treatment, biological treatment, ZLD systems
• Develop and review process flow diagrams (PFDs), piping and instrumentation diagrams (P&IDs), mass balances, and equipment specifications for major equipment items
• Generate technical specifications for packaged units, process equipment
• Participate in design reviews and clarifications at the early stages of process and basic engineering works
• Generate process description and logic documents for complex water and wastewater treatment systems
• Participate in HAZOP, FMEA and safety review or assessment
• Work closely within the other engineering department and support project managers on project activities
• Prepare documentation for submission and support project team on plant start-up, performance test, optimization and hand-over.
• Support project team on commissioning activities, performance test, optimization, troubleshooting and hand-over
• Provide training to the end customer operation and maintenance teams

Other responsibilities:

• Provide technical support to the Ecolab operation and maintenance teams (training, guidance)
• Troubleshoot process upsets and contamination events
• Monitor system performance and water quality parameters (e.g., resistivity, TOC, silica, metals)
• Conduct audit of a running system and provide audit report
• Work closely with the innovation teams to develop new processes and digital tools

Qualifications

• Master’s degree or engineering school graduate in Chemical Engineering, Environmental Engineering, Mechanical Engineering, or related field
• Bachelor’s degree with strong experience in UPW and /or wastewater treatment for semiconductor industry will be considered
• Require minimum 5 years experience with good knowledge in process control, water and waste water treatment systems.
• Experience in regulated or high‑purity industries (semiconductor, pharmaceuticals, biotech, energy...)
• Strong understanding of water chemistry and treatment processes
• Ability to interpret process data and laboratory results
• Analytical thinking & problem-solving skills
• Ability to work independently and in cross‑functional teams
• Self-initiative and creativity, flexible and able to work under pressure
• Strong communication and technical documentation abilities for collaboration with internal international departments, suppliers and customers
• Mobility and willingness to travel worldwide, including extended trips
• English proficiency for daily business; German, French or other languages are an added value
• Swiss or EU citizenship or a C Swiss resident permit

What's in it for you:

• A competitive salary
• Flexible working hours
• Being part of an international team with travel opportunities
• Engage with cutting-edge ultrapure water technology for the electronics industry in a state-of-the-art technology centre in Switzerland
• Always new challenges to solve
• Entry date with immediate effect or by mutual agreement
• At Ecolab we are committed to providing working environments where everyone is included and treated fairly and with respect

Dive in – Apply Today! Let’s change the future of water together.

About Ecolab:

At Ecolab, we prioritize our talent-first philosophy by creating the most capable and diverse team to excel at our nearly three million customer sites. Building on a century of innovation, our 48,000 associates help deliver comprehensive science-based solutions, data-driven insights and world-class service to advance food safety, maintain clean and safe environments, and optimize water and energy use, and improve operational efficiencies and sustainability for customers in the food, healthcare, life sciences, hospitality and industrial markets in more than 170 countries around the world. Our solutions not only enhance operational efficiency but also contribute to sustainability and public health, making a positive impact on the world. We are committed to eliminating unnecessary complexities and embracing a beginner's mindset, continuously seeking new perspectives and innovative solutions to stay ahead in a rapidly changing world.

Ecolab’s commitment to diversity, equity and inclusion (DE&I) reflects our longstanding value of working together to integrate diverse perspectives to challenge ourselves, reach our goals and do what’s right.

Apply today and join one of the most ethical companies with over a hundred years of history.

Join Ecolab and help us protect what’s vital.

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Our Commitment to a Culture of Inclusion & Belonging
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.