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

talisman; United States; Remote; USD 90,000 - 150,000; Full time

Job summary

Talisman seeks a Process Engineer to lead wastewater treatment design on municipal and industrial projects, in a fully remote US-based role. The position focuses on mass balances, biological modeling, aeration, and solids handling, with emphasis on process optimization, regulatory submittals, and startup support.

Candidates should have 5+ years in consulting and be prepared to specialize deeply in process design.

Qualifications

• 5+ years of wastewater treatment process design in a consulting environment.
• Demonstrated BioWin or GPS-X modeling capability.
• Strong grounding in activated sludge kinetics and nutrient removal.
• Ability to develop mass balances and process design criteria.

Responsibilities

• Lead process design for wastewater treatment facilities across stages from preliminary to disinfection.
• Design and evaluate nutrient removal systems (nitrification/denitrification, bio-P, MBR).
• Build and calibrate process models and run plant simulations.
• Prepare facility plans, basis of design reports, and permit submittals.
• Support startup, commissioning, and optimization of plants.

Skills

Wastewater design

BioWin modeling

GPS-X modeling

Mass balances

Activated sludge

Education

EIT/PE license eligible

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