Process Engineer — Wastewater Treatment Design - US-Based | Fully Remote

talisman; United States; Remote; USD 110,000 - 140,000; Full time

Job summary

talisman in the United States is seeking a Process Engineer to lead wastewater treatment design on municipal and industrial projects, fully remote. The role emphasizes mass balances, biological modeling, aeration and solids handling for advanced treatment facilities.

You will build and calibrate process models in BioWin or GPS-X, develop design criteria, and size unit processes. Expect client-facing responsibilities through startup and optimization phases.

Qualifications

• 5+ years of wastewater treatment process design in a consulting environment.
• EIT or PE license or within 12 months of attainment.
• Demonstrated BioWin or GPS-X modeling capability.

Responsibilities

• Lead process design for wastewater facilities including treatment trains and solids handling.
• Develop mass balances, load projections, and design criteria.
• Build and calibrate models; run simulations and future-condition analyses.
• Support permitting submittals and plant performance evaluations.
• Provide startup, commissioning, and optimization support.

Skills

BioWin modeling

GPS-X modeling

Wastewater design

Activated sludge kinetics

SRT-based design

Nutrient removal

Regulatory review

Client communication

Project leadership

Education

EIT/PE license

Tools

BioWin

GPS-X

Job description

Process Engineer — Wastewater Treatment Design - US-Based | Fully Remote

We're partnered with a water and wastewater consultancy hiring a Process Engineer to lead treatment process design on municipal and industrial projects, fully remote. This is a specialist process seat; mass balances, biological modeling, aeration and solids handling. It is not a general civil role with a process label on it.

Suited to someone around five years in who wants to go deeper on process rather than broader on delivery.

What you'll do

• Lead process design for wastewater treatment facilities: preliminary treatment, primary and secondary clarification, biological treatment, disinfection, and solids handling
• Design and evaluate biological nutrient removal systems; nitrification/denitrification, bio-P, MBR, IFAS, MBBR, SBR, and conventional activated sludge
• Build and calibrate process models in BioWin or GPS-X; run whole-plant simulations, sensitivity analyses, and future-condition scenarios
• Develop mass balances, load projections, and process design criteria; size and select unit processes
• Design aeration systems and support blower, diffuser, and equipment selection with vendors
• Design solids handling trains: thickening, anaerobic and aerobic digestion, dewatering, and biosolids management
• Produce hydraulic profiles, PFDs, P&IDs, process narratives, and equipment specifications
• Support pilot studies, sampling programs, and plant performance evaluations
• Prepare facility plans, basis of design reports, and state regulatory and NPDES permitting submittals
• Provide startup, commissioning, and process optimization support; troubleshoot operating plants

What you'll bring

• 5+ years of wastewater treatment process design in a consulting environment
• EIT / PE license, or sitting within 12 months
• Demonstrated BioWin or GPS-X modeling capability, this is a core requirement, not a nice-to-have
• Strong grounding in activated sludge kinetics, SRT-based design, nutrient removal chemistry, and digester performance
• Experience with effluent limits, permit compliance strategy, and state regulatory review
• Comfortable owning technical scope independently and writing clearly for clients and reviewers