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

talisman; United States; On-site; USD 120,000 - 160,000; Full time

Job summary

Talisman is seeking a Process Engineer to lead wastewater treatment process design on municipal and industrial projects, fully remote in the US. The role emphasizes mass balances, biological modeling, aeration and solids handling, with a focus on deeper process expertise over broad delivery.

Ideal candidates have 5+ years in consulting, a valid EIT/PE (or eligibility within 12 months), and proven BioWin or GPS-X modeling capabilities. Join a focused team advancing treatment solutions.

Qualifications

• 5+ years of wastewater treatment process design in a consulting environment.
• EIT or PE license (or eligible within 12 months).
• BioWin or GPS-X modeling experience is a core requirement.
• Strong grounding in activated sludge kinetics and nutrient removal chemistry.

Responsibilities

• Lead process design for wastewater treatment facilities including preliminary, primary and secondary treatment and disinfection.
• Design and evaluate nutrient removal systems (BNR, nitrification/denitrification, MBR, IFAS, MBBR, SBR, AS sludge).
• Build and calibrate process models in BioWin or GPS-X; run plant simulations and sensitivity analyses.
• Develop mass balances, load projections and design criteria; size unit processes.
• Support aeration system design, blower, diffuser and equipment selection with vendors.
• Design solids handling trains including digestion, dewatering and biosolids management.
• Produce PFDs, P&IDs, process narratives and equipment specs; support permitting submittals.
• Provide startup, commissioning and optimization support; troubleshoot plants.

Skills

Wastewater treatment design

Process modeling

Mass balances

Activated sludge kinetics

Regulatory review

Technical writing

Education

EIT/PE license or eligible within 12 months

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