Job Title: Process Engineer - III

Department

Reports to: Global Director, Business Development

Summary

The Process Engineer III is a fully competent, autonomous contributor responsible for executing and owning complex process design activities for Water, Wastewater, Reclaim Water, and Ultrapure Water (UPW) Systems. This role applies advanced process engineering principles to develop complete and accurate design deliverables, supports project execution from concept through startup, and serves as a technical resource for junior engineers. The Process Engineer III regularly interfaces directly with customers, A&E firms, general contractors, and vendors to clarify technical requirements, support design decisions, and represent Ovivo’s process engineering expertise. This position plays a key role in ensuring designs meet customer expectations, contractual requirements, and project performance objectives while maintaining high standards of quality, safety, and schedule adherence.

Here's What You Will Do

Own and execute process engineering scope for portions of small to medium projects, including Ultra‑Pure Water (UPW), Wastewater Treatment, and Reclaim Water Treatment Systems – complete water circularity capability with a desire for focus in Wastewater and Reclaim Water Systems.
Develop and check core process deliverables such as mass balances, process descriptions, FMEAs, pressure profiles, logic narratives, PFDs, and P&IDs
Perform equipment sizing and selection for multiple unit processes using vendor tools and third‑party software (e.g., PipeFlo, WAVE, PHREEQC, OEM projection tools. etc)
Review P&IDs, 3D models, and interdisciplinary documents for technical accuracy, constructability, and alignment with specifications
Coordinate with automation, mechanical, electrical, and layout teams to ensure integrated and functional system designs
Lead technical reviews and discussions with customers, providing written technical evaluations as needed
Interface with vendors to evaluate equipment options, review technical submittals, and support procurement decisions
Support proposal, RFI, and RFP efforts through preliminary sizing, process concepts, and technical risk evaluation
Participate in commissioning, startup, and operational troubleshooting to support successful system turnover
Identify technical risks and proactively drive resolution in collaboration with project and engineering leadership
Mentor and review work produced by junior process engineers, providing technical guidance and feedback
Apply continuous improvement principles to improve design quality, efficiency, and standardization across projects

Your Qualifications Will Include

Advanced knowledge of Ultra‑Pure Water (UPW), Wastewater, Reclaim, or Industrial Water Treatment Systems, including core unit operations such as Filtration, ACF, UF, RO, IX/EDI, Solids Separation, Sludge Management, Biological Treatment, and Chemical Systems
History of owning designs of large-scale Wastewater and/or UPW systems in a Semiconductor fab
Ability to independently develop process calculations, system sizing, and mass balances with limited supervision and senior review
Proficiency in 3rd party sizing software (RO, GTM, pumps, Ion Exchange, PIPEFLO, etc.)
Experience preparing and maintaining process deliverables including PFDs, P&IDs, process narratives, equipment lists, and technical specifications
Proficiency in AutoCAD Plant3D is a plus.

Education, Training And Experience You’ll Possess

Bachelor’s degree in the chemical or environmental engineering discipline is required from an accredited university or other related qualified training, plus 7 years related experience; and/or equivalent combination of education and experience.

Will i Need To Travel

Periodic travel to support customer design reviews and startup/commissioning efforts is required – max requirement would be up to two weeks at a time, potentially several times a year. This is project dependent.

What Can We Offer As An Employer

Summarize Ecolab Benefits

Annual Or Hourly Compensation Range

The pay for this role is $90,000-$120,000. Many factors are taken into consideration when determining compensation, such as experience, education, training, geography, etc. We comply with all minimum wage and overtime laws.

Benefits

Ecolab provides the following benefits: medical, dental, vision, life insurance, accident insurance, critical illness insurance, hospital indemnity insurance, auto insurance, home insurance, pet insurance, identity theft protection, short-term and long-term disability, 401k, pension plans, retirement health care benefits, short-term incentives, vacation (12 days), holidays, parental leave, employee stock purchase plans (Full-Time Associates), discount on day care services and caregiver services, adoption assistance, group legal services, employee assistance program, employee discount program, and education assistance program, on-Site childcare and fitness facilities may be available at select Ecolab locations. Click here for additional benefits information. If you are viewing this posting on a site other than our Ecolab Career website, view our benefits at jobs.ecolab.com/working-here.

Potential Customer Requirements Notice

To meet customer requirements and comply with local or state regulations, applicants for certain customer-facing roles may need to:

Undergo additional background screens and/or drug/alcohol testing for customer credentialing.

Americans With Disabilities Act (ADA)

Ecolab will provide reasonable accommodation (such as a qualified sign language interpreter or other personal assistance) with our application process upon request as required to comply with applicable laws. If you have a disability and require accommodation assistance in this application process, please visit the Recruiting Support link in the footer of each page of our career website.

Our Commitment to a Culture of Inclusion & Belonging

At Ecolab, we believe the best teams are inclusive. We are on a journey to create a workplace where every associate can grow and achieve their best. We are committed to fair and equal treatment of associates and applicants and 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, we 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, disability, or status as a covered veteran.

In addition, we are committed to furthering the principles of Equal Employment Opportunity (EEO) through Affirmative Action (AA).

We will consider for employment all qualified applicants, including those with criminal histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance, the San Francisco Fair Chance Ordinance, and the New York City Fair Chance Act.

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