Director, Anaerobic Wastewater Treatment

Position Summary

• Mobius Renewables operates a growing fleet of plants across the USA, currently 13, that convert
• biogas derived from the anaerobic digestion of wastewater in covered lagoons into renewable
• natural gas (RNG).
• The Director of Anaerobic Wastewater Treatment anaerobic digestion will serve as the company’s
• primary technical authority and point person for wastewater feedstock management, covered-
• lagoon anaerobic digestion, and biogas generation across the anaerobic digestion portfolio. The
• role will combine deep technical expertise with engagement with wastewater-generating
• counterparties.
• This role serves as the organization’s subject matter expert for industrial wastewater treatment,
• with particular emphasis on high-strength organic waste streams, biological treatment, anaerobic
• processes, and the integration of wastewater treatment with anaerobic digestion and renewable
• energy production.
• The Director will work across Development, Engineering, Operations, Commercial, and Project
• Execution to evaluate new opportunities, troubleshoot operating facilities, and drive continuous
• improvement across the portfolio.

Key Responsibilities

Technical Leadership on Wastewater Treatment

• Serve as Mobius Renewables’ primary technical authority for industrial wastewater treatment within the anaerobic digestion business.
• Evaluate wastewater characteristics including COD/BOD, TSS, FOG, nutrients, pH, alkalinity, toxicity/inhibition, temperature, and other factors affecting biological treatment and anaerobic digestion performance.
• Provide technical guidance related to aerobic and anaerobic biological treatment, clarification, solids handling, DAF, nutrient management, pretreatment, polishing, and related wastewater technologies.
• Maintain knowledge of emerging wastewater and resource-recovery technologies and assess their applicability to Mobius projects.
• Candidate should have strong technical background covering both the biology and physical operation of these systems, including: (i) Covered anaerobic lagoons and high-strength industrial wastewater; (ii) hydraulic short-circuiting, dead zones, retention time, and inlet/outlet configuration; (iii) sludge accumulation, lagoon capacity loss, dredging, and solids management; (iv) FOG accumulation, floating crusts, and fat-cap prevention or removal; (v) mixing, recirculation, heating, pH, alkalinity, nutrients, and organic loading; (vi) process upsets, inhibition, foaming, odor, and declining gas yield; (vii) cover condition, gas collection, condensate, pressure, and methane recovery; (viii) field diagnostics and practical corrective-action planning.

Project Development & Engineering

• Partner with Development and Commercial teams during evaluation of new wastewater and anaerobic digestion opportunities.
• Conduct or oversee technical due diligence of wastewater streams, existing treatment infrastructure, and proposed projects.
• Assess the treatability and variability of prospective feedstocks and wastewater streams and identify potential process risks.
• Identify opportunities to improve project economics through process optimization, resource recovery, reduced chemical or energy consumption, and improved biogas production.

Operations & Performance Optimization

• Partner closely with Operations to optimize wastewater treatment and anaerobic process performance across operating facilities.
• Diagnose process upsets and recurring performance issues and lead development of corrective actions.
• Analyze operating data and identify trends affecting treatment efficiency, system stability, biogas production, chemical consumption, solids generation, and operating cost.
• Develop operating parameters, KPIs, monitoring requirements, and performance standards for wastewater systems.
• Support root-cause investigations following significant process or treatment events.
• Lead technical discussions with customers, regulators, engineering firms, and other external stakeholders as appropriate.
• Develop capital and operating-cost budgets for improvements to the wastewater treatment systems, including any solutions identified for mitigations of problems, and work with operations to integrate into financial planning.

Qualifications

• Bachelor’s degree in Chemical Engineering, Environmental Engineering, Biological Engineering, or a related technical discipline; advanced degree preferred.
• 10+ years of progressively responsible experience in industrial wastewater treatment, process engineering, biological treatment, anaerobic digestion, or related fields.
• Deep technical knowledge of high-strength industrial wastewater treatment and biological processes.
• Demonstrated experience designing, commissioning, operating, optimizing, or troubleshooting wastewater treatment systems.
• Experience with anaerobic treatment technologies and/or anaerobic digestion strongly preferred.
• Experience with food and beverage, agricultural, manufacturing, or other high-organic-load wastewater streams strongly preferred.
• Strong understanding of wastewater characterization, mass balances, biological kinetics, process controls, nutrient requirements, solids management, and treatment-system performance.
• Strong written and verbal communication skills, including the ability to communicate complex technical matters to nontechnical audiences.
• Ability and willingness to travel (up to 50%) to Mobius facilities, customer sites, and project locations as required.

Preferred Qualifications

Experience in several of the following areas would be particularly valuable:

• High-strength industrial wastewater
• Food and beverage wastewater
• Anaerobic biological treatment
• Anaerobic digestion
• Renewable natural gas and biogas
• DAF systems
• Aerobic biological treatment
• Nutrient removal and management
• Solids separation and handling
• Wastewater reuse and resource recovery
• Treatment-system commissioning and startup
• Process troubleshooting and optimization
• Industrial pretreatment programs
• Wastewater permitting and regulatory compliance
• Evaluation of greenfield and brownfield treatment facilities

At Mobius Renewables, we’re helping lead the global energy transition by transforming waste into renewable energy and measurable decarbonization. We’re a fast-growing team of expert innovators, engineers, and problem-solvers committed to advancing global sustainability, fueling a circular economy, and creating a cleaner future for all. Join us and help shape the future of renewable energy.