Wastewater Process Engineer

ARCO Companies; Chicago (IL); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Industry-leading bonus program

ESOP

401(k)

Medical, dental, and vision insurance

HSA and FSA options

Parental leave

Job summary

ARCO/Murrays is hiring a Process Engineer to support process design and technical delivery on industrial water and wastewater projects across hyperscale data center, RNG/biogas, semiconductor, and food & beverage markets. You’ll contribute from basis-of-design through commissioning on greenfield UPW systems and large-scale cooling/reuse infrastructure, working within a design-build framework.

The role suits an early- to mid-career engineer ready to grow ownership of process design, deliverables,

Qualifications

• 3+ years in water/wastewater process engineering or related field
• Experience developing or supporting PFDs, P&IDs, hydraulic calculations, mass balances, equipment sizing, and basis-of-design documentation
• Experience with UF/NF/RO, biological or chemical treatment, filtration, or solids handling

Responsibilities

• Support process design on water and wastewater projects from early design through commissioning.
• Develop basis-of-design content, mass balances, hydraulic calculations, PFDs, P&IDs, equipment layouts and data sheets.
• Participate in client, consultant, OEM, and design-build discussions; document decisions and translate requirements into scope.
• Support equipment sizing, OEM evaluations, procurement, and submittal reviews.
• Assist startup, commissioning, troubleshooting, and optimization with senior engineers and field teams.

Skills

Water/wastewater design

PFDs & P&IDs

Hydraulic calculations

Mass balances

Vendor coordination

Education

B.S. in Chemical/Environmental Engineering

Tools

Industrial controls

Job description

About You:

BlueWTR is hiring a Process Engineer to support process design and technical delivery on industrial water and wastewater projects across hyperscale data center, RNG/biogas, semiconductor, advanced manufacturing, and food & beverage markets. You’ll contribute from basis-of-design through commissioning on projects ranging from greenfield UPW systems to multi-hundred-MW cooling and reuse infrastructure, working inside a design-build structure with the full backing of ARCO/Murrays national platform.

This role is designed for an early- to mid-career process engineer ready to take increasing ownership of process design, technical deliverables, vendor coordination, and field execution within a design-build environment.

• Location: Denver or Chicago
• Travel: 20% domestically

A Day in the Life:

• Support process design on industrial water and wastewater projects, including membrane (UF/NF/RO), biological, chemical, solids handling, and reuse systems, from early design through commissioning.
• Develop basis-of-design content, mass balances, hydraulic calculations, PFDs, P&IDs, equipment layouts, equipment data sheets, and control narratives with review from senior process engineers.
• Participate in technical discussions with clients, consulting engineers, OEMs, and design-build partners; document decisions and translate process requirements into executable scope.
• Support equipment sizing and selection, OEM evaluations, technical bid reviews, procurement, and submittal reviews.
• Support startup, commissioning, troubleshooting, and optimization in coordination with senior process engineers, controls integrators, OEMs, and field teams.
• Coordinate with project managers, designers, and field teams to maintain technical quality, schedule, constructability, and clear documentation.
• Support proposals, project scoping, vendor outreach, technical research, and business development efforts for new pursuits.

Necessary Qualifications:

• 3+ years in water/wastewater process engineering, industrial process design, consulting, design-build, EPC, or a closely related technical role.
• Experience developing or supporting PFDs, P&IDs, hydraulic calculations, mass balances, equipment sizing, and basis-of-design documentation.
• Working experience with one or more industrial water/wastewater treatment technologies such as membrane systems (UF/NF/RO), biological treatment, chemical treatment, filtration, or solids handling.
• Strong written and verbal communication skills; comfortable participating in client, vendor, and internal technical discussions.
• Understanding of project cost, schedule, constructability, and how process design decisions affect project delivery.
• BS in Chemical, Environmental, or related engineering discipline.

Preferred Qualifications

• EIT certification or progress toward professional license.
• Direct project experience in hyperscale data center cooling, RNG/biogas, semiconductor UPW, or food & beverage process water.
• Working knowledge of industrial controls, PLC/SCADA architecture, instrumentation, and process automation handoffs.
• NPDES permitting and industrial discharge compliance experience.
• Field, startup, commissioning, or equipment vendor experience.

What We Can Offer You:

• Industry-leading performance-based bonus program
• Employee Stock Ownership Plan (ESOP)
• Traditional and Roth 401(k)
• Comprehensive medical, dental, and vision insurance
• HSA and FSA options
• Paid parental leave
• Paid sabbatical and volunteer leave
• Tuition reimbursement
• Up to $28,000 in scholarships per child
• 100% charitable match
• Inclusive, ownership-driven workplace culture

MAKE YOUR MOVE

We are proud to be one of the fastest-growing, privately-owned companies in America, celebrating over 30 years of experience as design-build experts. We have completed over 7,500 design-build projects nationwide. We ranked #9 on ENR's Design-Build Firms list and #34 on ENR's Top 400 Contractors list of 2026. Most importantly, our clients like us, trust us, and want to do business with us. We are looking for people with the same enthusiasm, passion, and respect for the hard work that brought us to where we are today. If the answer is Yes! we look forward to meeting you.

ARCO does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies without pre-approval from ARCO's Human Resources team. Pre-approval is required before any external candidate can be submitted. ARCO will not be responsible for fees related to unsolicited resumes and for candidates who are sent directly to our hiring managers. Agencies must have a fully executed vendor agreement in place as well as written approval to submit candidates from an ARCO TA Manager for a specific position before submitting candidates.

LEGAL DISCLAIMER

EOE, including disability/vets