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 Bio Win 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 environmentEIT / PE license, or sitting within 12 months Demonstrated Bio Win 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 If you think you are good fit for this role then please click, Apply!
