Water​/Wastewater Program Engineer

Slater Infrastructure Group LLC is seeking a Water/Wastewater Process Engineer to serve as a technical leader on municipal water and wastewater infrastructure programs. This position is responsible for the evaluation, design, and optimization of treatment processes across the full spectrum of water supply, water reclamation, and resource recovery facilities. The Process Engineer works at the intersection of engineering design, regulatory compliance, and operational performance, translating client needs into constructable, cost-effective treatment solutions.

The ideal candidate brings deep expertise in treatment process fundamentals combined with practical experience delivering projects through all phases from planning and preliminary engineering through detailed design, construction support, and commissioning. This role requires independent technical judgment, strong collaboration with multidisciplinary teams, and the ability to communicate complex process concepts to both technical and non-technical audiences.

• Lead process engineering design for water treatment facilities including coagulation/flocculation, sedimentation, filtration (gravity, pressure, and membrane), disinfection (chlorine, UV, ozone), fluoridation, and corrosion control systems.
• Lead process engineering design for wastewater treatment facilities including preliminary treatment (screening, grit removal), primary clarification, biological treatment (activated sludge, BNR, M , MB , S ), secondary clarification, tertiary filtration, and disinfection.
• Design chemical handling and feed systems for treatment chemicals including coagulants, polymers, lime/caustic, sodium hypochlorite, carbon sources, and specialty chemicals.
• Develop and evaluate nutrient removal strategies (nitrogen and phosphorus) to meet increasingly stringent effluent limits and total maximum daily load (TMDL) requirements.
• Design solids handling and biosolids processing systems including thickening, digestion (aerobic and anaerobic), dewatering, drying, and beneficial reuse or disposal.
• Evaluate and recommend resource recovery technologies including biogas utilization, struvite recovery, heat recovery, and water reuse/reclamation systems.
• Perform process capacity analyses, hydraulic profiles, mass balance calculations, and energy assessments for existing and proposed treatment facilities.
• Develop basis of design reports, process design criteria, and technical memoranda to support project deliverables.

• Develop and review piping and instrumentation diagrams (P&IDs), process flow diagrams (PFDs), and process control narratives.
• Specify process instrumentation including flow meters, level sensors, analyzers (pH, DO, turbidity, chlorine residual, nutrient analyzers), and control valves.
• Coordinate with SCADA, electrical, structural, civil, and mechanical engineers to integrate process designs into facility-wide plans and specifications.
• Prepare equipment specifications, data sheets, and procurement evaluations for major process equipment (blowers, pumps, mixers, clarifier mechanisms, membrane systems, UV systems).
• Support development of SCADA control strategies and alarm setpoints for treatment process automation.
• Participate in constructability reviews, value engineering sessions, and interdisciplinary design reviews.

• Ensure treatment facility designs meet applicable NPDES permit requirements, state environmental regulations, and federal Clean Water Act and Safe Drinking Water Act standards.
• Evaluate facility performance against current and anticipated regulatory requirements; recommend upgrades to achieve and maintain compliance.
• Support permitting activities including preparation of engineering reports, permit applications, and responses to regulatory agency comments.
• Provide technical support for consent decree compliance, integrated planning, and long-term control plan development as applicable.
• Assess emerging regulatory trends (e.g., PFAS, microplastics, lead and copper rule revisions) and advise…