Director, Anaerobic Wastewater Treatment

GreenGas

United States

Remote

USD 150,000 - 210,000

Full time

14 days+

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Job summary

Mobius Renewables seeks a Director of Anaerobic Wastewater Treatment to lead technical authority for industrial wastewater within the anaerobic digestion portfolio. You will evaluate wastewater characteristics, guide biological treatment and digestion, and drive optimization across facilities.

The role partners with Development, Engineering, Operations, and Commercial teams to pursue new opportunities, troubleshoot plants, and improve biogas production while ensuring regulatory and safety

Qualifications

Bachelor-level or higher degree in a relevant engineering field.
10+ years in industrial wastewater treatment or anaerobic digestion.
Experience with high-strength wastewater and biogas systems.
Ability to lead design, commissioning, and optimization projects.

Responsibilities

Serve as technical authority for industrial wastewater treatment within anaerobic digestion.
Lead evaluation of wastewater characteristics and treatment performance.
Provide guidance on aerobic/anaerobic treatment, solids handling, and nutrient management.
Stay current with emerging wastewater tech and assess applicability.
Partner with Development and Commercial teams on opportunities.
Oversee due diligence of streams, facilities, and projects.
Identify process risks and opportunities to improve economics and biogas yield.

Skills

Wastewater treatment

Anaerobic digestion

Biogas production

Process optimization

Hydraulic design

Nutrient management

Data analysis

Troubleshooting

Project leadership

Communication

Education

Bachelor’s degree in Chemical Engineering, Environmental Engineering, Biological Engineering, or related field

Advanced degree preferred

Job description

Director, Anaerobic Wastewater Treatment

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.

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

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

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.
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: