Chemical Process Engineer III

Water Otter Job Board; Vancouver (WA); On-site; USD 90,000 - 120,000; Full time

Job summary

Ecolab is seeking a Process Engineer III to lead process design activities for Water, Wastewater, Reclaim Water, and UPW Systems. You will own sizing, deliverables, and technical evaluations, interfacing with customers and vendors to ensure quality and schedule adherence.

Role requires advanced engineering knowledge, independent work, and collaboration with cross‑functional teams. Travel is possible for reviews and startup activities.

Qualifications

• Bachelor’s degree in chemical or environmental engineering required.
• 7 years of related experience preferred.
• Experience with UPW, wastewater, reclaim water systems.
• Ability to develop process calculations, sizing, and mass balances.
• Experience with PFDs, P&IDs, and technical specifications.
• Familiarity with third‑party sizing software.

Responsibilities

• Own and execute process engineering scope for portions of small to medium projects including UPW, wastewater, and reclaim water systems.
• Develop and check core deliverables such as mass balances, process descriptions, PFDs, and P&IDs.
• Review P&IDs, 3D models, and interdisciplinary documents for accuracy and constructability.
• Coordinate with automation, mechanical, electrical, and layout teams for integrated designs.
• Interface with vendors to evaluate equipment options and support procurement decisions.
• Support proposal, RFI, and RFP efforts through sizing concepts and risk evaluation.
• Participate in commissioning, startup, and operational troubleshooting.

Skills

UPW Systems

Wastewater/ Reclaim

Process calculations

PFDs & P&IDs

Vendor sizing tools

Education

Bachelor's in chemical or environmental engineering

Tools

PipeFlo

WAVE

PHREEQC

OEM projection tools

AutoCAD Plant3D

Job description

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 herefor 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

• 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 Affa­firmative 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.