Chemical Process Engineer III

Ecolab•Washington, DC

1d•$90,000 - $120,000•Hybrid

About The Position

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.

Requirements

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

Nice To Haves

Proficiency in AutoCAD Plant3D is a plus.

Responsibilities

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

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
education assistance program
on-Site childcare and fitness facilities may be available at select Ecolab locations