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Salary
$100k – $125k per year
Location
In office (Phoenix)
Seniority
Middle · 3+ years exp
Visa
H-1B filings in 12 months: 20 · green card filings: 6
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Oct 19, 2026. Ecolab scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Ecolab is a water, hygiene and infection prevention company headquartered in Saint Paul, Minnesota, supplying cleaning and sanitation chemicals, water treatment programs, food safety services and pest elimination to restaurants, hotels, hospitals, food and beverage plants and heavy industry. Founded in 1923, it is a Fortune 500 company that serves customers at more than 100,000 sites worldwide and owns Nalco Water, its industrial water treatment business. Openings cover sales and territory managers, field service representatives, food safety specialists, lab and manufacturing staff, logistics associates, finance analysts and data and AI engineers.

Ovivo Pure Water+, an Ecolab company, is seeking a highly motivated Process Engineer to join our Operations & Maintenance team. In this role, you will provide technical expertise and support for process-related topics, helping ensure optimal performance, reliability, and continuous improvement of ultra-pure water (UPW) systems. You will work closely with engineers, technicians, and innovation teams to maintain high standards of water quality and operational efficiency while contributing to solutions that support one of the world’s most critical resources: water.

What’s in it For You

  • Work with advanced ultra-pure water treatment technologies.
  • Collaborate with cross-functional teams including operations, automation, commissioning, and innovation.
  • Contribute to continuous improvement initiatives that enhance system performance and reliability.
  • Support the development and implementation of new technologies and process enhancements.
  • Expand your technical expertise through troubleshooting, process optimization, and project support activities.

What You Will Do

  • Analyze and improve ultra-pure water processes to enhance efficiency, reliability, and compliance with quality standards.
  • Provide advanced technical support for process-related issues, including root cause analysis and corrective actions.
  • Prepare, maintain, and update process documentation and standard operating procedures (SOPs).
  • Develop and maintain process specifications, P&IDs, mass balances, sequences of operation, and functional logic for water treatment systems.
  • Partner with automation, commissioning, and innovation teams on system upgrades, modifications, and new technology implementation.
  • Provide technical support to sales and procurement teams as needed.
  • Support Operations & Maintenance engineers and technicians through process-related training and knowledge sharing.
  • Perform all work in accordance with established safety procedures.
  • Complete additional duties as assigned.

Position Details

  • Travel required on a case-by-case basis to support projects, troubleshooting activities, or training at other sites.
  • onsite at a customer account in Chandler, AZ

Minimum Qualifications

  • Bachelor’s degree in Chemical Engineering, Process Engineering, or related qualified training from an accredited university, plus up to three (3) years of related experience; and/or an equivalent combination of education and experience.
  • Proficiency in AutoCAD Plant 3D, Microsoft Word, Microsoft Excel, and Microsoft PowerPoint.

Annual or Hourly Compensation Range:

The pay range for this role is $100,000-$125,000 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.

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