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Digester Operator Jobs in California (NOW HIRING)

California Bioenergy LLC

Plant Operator

Kerman, CA · On-site

$25 - $30/hr

COMPANY DESCRIPTION California Bioenergy LLC (CalBio), founded in 2006, is one of the nation's leading developers, owners, and operators of dairy digester projects. Working closely with our family ...

California Bioenergy LLC

Plant Operator

Visalia, CA · On-site

$25 - $30/hr

COMPANY DESCRIPTION California Bioenergy LLC (CalBio), founded in 2006, is one of the nation's leading developers, owners, and operators of dairy digester projects. Working closely with our family ...

CR&R INCORPORATED

Industrial Mechanic

Perris, CA · On-site

$27.37 - $34.21/hr

As an Industrial Mechanic, you will work within anaerobic digester facilities to keep critical equipment operating safely, efficiently, and in compliance. This is skilled, technical work in a ...

mew

Remote Operations Technician - Biogas

Redding, CA · On-site +1

Remotely monitor and troubleshoot issues at assigned digester facilities and cleanup plants * Communicate regularly with Field Ops Manager and on-site operators to ensure proper operation and ...

CR&R Incorporated

Industrial Mechanic

Perris, CA

$25 - $32.75/hr

As an Industrial Mechanic, you will work within anaerobic digester facilities to keep critical equipment operating safely, efficiently, and in compliance. This is skilled, technical work in a ...

mew

Operations Field Technician

Merced, CA

$20 - $28/hr

... operator of agricultural waste-to-energy systems in the United States. The Company designs ... digester projects in the areas of Galt, Tulare, Merced, Fresno County, or Buckeye Arizona. Maas ...

mew

Field Technician II - South Valley

Visalia, CA · On-site

$25 - $38/hr

The Facility Operator will ensure the RNG Facility, and all equipment related to biogas handling ... Dairy digester experience Other Duties: Please note this is not designed to cover or contain a ...

mew

Operations Field Technician II

Visalia, CA · On-site

$25 - $35/hr

Equipment to be operated and serviced will most commonly include biogas-powered generator engines ... digester systems, and RNG equipment. Qualifications & Skills: Required: Ability to work in the ...

Maas Energy Works LLC

Safety Technician

Visalia, CA · On-site

$20 - $30/hr

... digester, biogas, and biogas conditioning plants. This includes assisting in the development ... Work closely with plant operators to create a culture of safety that supports high productivity ...

mew

Safety Technician

Visalia, CA · On-site

$20 - $30/hr

... digester, biogas, and biogas conditioning plants. This includes assisting in the development ... Work closely with plant operators to create a culture of safety that supports high productivity ...

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Digester Operator information

Where do wastewater operators make the most money?

Wastewater operators tend to earn higher salaries in regions with a higher cost of living and more advanced treatment facilities, such as urban areas or states with strong environmental regulations. Factors like experience, certifications, and the complexity of the treatment plant also influence earning potential.

What is the highest paying job in waste management?

In waste management, senior roles such as Waste Management Director or Environmental Manager tend to have the highest salaries, often exceeding $100,000 annually. These positions typically require extensive experience, leadership skills, and relevant certifications in environmental management or engineering.

What jobs pay 2000 a day?

Jobs that can pay $2,000 a day typically include specialized roles such as senior corporate executives, certain medical specialists, high-level consultants, and skilled trades like commercial pilots or project managers in large projects. These positions often require extensive experience, advanced certifications, or working in high-demand industries with significant responsibilities.

What is a digester operator?

A digester operator is responsible for monitoring and controlling the operation of digesters used in wastewater treatment or biogas production. They ensure the equipment functions properly, maintain safety standards, and may need technical skills and certifications related to plant operations. The role often involves working in industrial environments and following strict procedural guidelines.

What is the difference between Digester Operator vs Wastewater Treatment Plant Operator?

AspectDigester OperatorWastewater Treatment Plant Operator
CertificationsTypically requires wastewater treatment certificationsRequires wastewater treatment certifications
Work EnvironmentOperates digesters in waste management or biogas plantsWorks in municipal or industrial wastewater treatment facilities
Industry UsageCommon in waste management, biogas, and renewable energy sectorsPrimarily in municipal and industrial wastewater treatment

Both roles involve operating treatment equipment and require similar certifications. However, Digester Operators focus on digesters used for waste breakdown and biogas production, while Wastewater Treatment Plant Operators manage the overall wastewater treatment process. The roles overlap in certifications and work environments but differ in specific processes and industry focus.

What are some common challenges faced by Digester Operators, and how can they be addressed?

Digester Operators often encounter challenges such as maintaining optimal operating conditions, troubleshooting equipment malfunctions, and managing unexpected changes in feedstock quality. To address these, operators must closely monitor process parameters, perform routine maintenance, and communicate effectively with maintenance and engineering teams. Staying proactive with preventive maintenance and participating in ongoing training can also help operators adapt to new technologies and regulatory requirements.

What are the key skills and qualifications needed to thrive as a Digester Operator, and why are they important?

A Digester Operator needs a solid understanding of industrial processes, mechanical aptitude, and usually a high school diploma or equivalent with relevant experience in wastewater treatment or industrial operations. Familiarity with SCADA systems, chemical dosing equipment, and safety protocols is typically required, and certifications like wastewater treatment operator licenses are often preferred. Strong attention to detail, problem-solving skills, and effective communication help operators respond quickly to issues and collaborate with team members. These skills ensure the safe, efficient, and compliant operation of digesters, which is critical for environmental protection and facility productivity.
What are popular job titles related to Digester Operator jobs in California? For Digester Operator jobs in California, the most frequently searched job titles are:
What job categories do people searching Digester Operator jobs in California look for? The top searched job categories for Digester Operator jobs in California are:
What cities in California are hiring for Digester Operator jobs? Cities in California with the most Digester Operator job openings:
Digester Operator jobs near you
Infographic showing various Digester Operator job openings in California as of June 2026, with employment types broken down into 1% Internship, 4% As Needed, 1% Full Time, 10% Temporary, 40% Contract, and 44% Nights. Highlights an 10% Physical, and 90% Hybrid job distribution.
Plant Operator

Plant Operator

California Bioenergy LLC

Kerman, CA • On-site

$25 - $30/hr

Full-time

Medical, Dental, Vision, Life, Retirement

Posted 15 days ago

Job description

Position Title: Biogas Plant Operator

Department: Operations

Reports To: Director of Operations

Location: Visalia, Fresno, and Chowchilla

Classification: Non-Exempt

Hourly Pay: $25.00 to $30.00

Benefits: Standard CalBio benefits package is available: Medical, dental, vision, life insurance, 401k with match.

COMPANY DESCRIPTION

California Bioenergy LLC (CalBio), founded in 2006, is one of the nation’s leading developers, owners, and operators of dairy digester projects. Working closely with our family dairy partners and agencies, including CARB, CDFA, CPUC, CEC, and the EPA, alongside affiliates Midwest Bioenergy, Northwest Bioenergy, and Southwest Bioenergy, we capture methane, a potent greenhouse gas, and beneficially use it to generate renewable natural gas (RNG) and electricity. Our projects reduce more than 1 million metric tons of CO₂e emissions per year, with a pathway to doubling these reductions over the next three years. A major use of CalBio RNG is as vehicle fuel; when truck fleets transition from diesel to natural gas, pollution emissions can drop by ~90%, delivering immediate air-quality benefits in communities such as California’s San Joaquin Valley and the L.A. Basin. These projects also help protect local air and water quality, create jobs, and provide new revenue and other meaningful benefits for our dairy partners.


POSITION PURPOSE

Reporting to the Operations Supervisor, the Biogas Plant Operator performs skilled operational and maintenance work to support the safe, reliable, and efficient operation of a dairy anaerobic digestion facility. This role is responsible for monitoring, maintaining, and cleaning the digester system, conditioning skid, and associated upgrader plant equipment. Facility assets include digesters, pumps, gas blowers, compressors, oxygen generators, condensers, chillers, and related auxiliary equipment.


ESSENTIAL JOB RESPONSIBILITIES

  • Demonstrate full working knowledge of and strict adherence to company safety programs. Promote a strong safety culture by actively communicating safety expectations and supporting plant safety, health, and environmental initiatives.
  • Maintain overall plant cleanliness and equipment reliability, including routine cleaning and upkeep of compressor skids, oxygen skids, strainers, wire screens, and chiller filters and coils, particularly during high‑heat conditions.
  • Assist CalBio operators and external contractors during onsite maintenance activities, including media changeouts, major equipment overhauls, and vacuum removal of solids from digesters.
  • Monitor anaerobic digester gas production with an emphasis on oxygen (O₂) and hydrogen sulfide (H₂S) concentrations.
  • Perform daily equipment rounds, recording fluid temperatures, pressures, oil levels, gas concentrations, and process flows. Inspect equipment for proper operation and identify issues such as vibration, leaks, or abnormal conditions, escalating findings as needed.
  • Participate in plant housekeeping, material handling, and safety activities to maintain a safe working environment.
  • Support the planning and execution of preventive maintenance programs.
  • Create and manage work orders in the computerized maintenance management system to track repairs and scheduled maintenance.
  • Collaborate effectively with team members across multiple departments to support plant operations.
  • Perform other duties as assigned.

PERFORMANCE MEASUREMENT

Performance is evaluated after the first 90 days and annually thereafter. Success in this role is measured by plant operating efficiency, system uptime and reliability, cost control, and compliance with company policies. Effective communication, teamwork, initiative, and the ability to utilize internal and external resources are key contributors to sustained operational performance.

QUALIFICATIONS

  • Three years prior experience in maintenance or operations within an industrial, utilities, or gas processing environment preferred.
  • Working knowledge of industrial safety procedures and best practices.
  • Ability to respond effectively to rapidly changing operational conditions.
  • Ability to read, write, and understand English required; Spanish language skills are a plus.
  • Basic proficiency with Windows‑based applications, including Outlook, Word, and Excel.
  • Valid California driver’s license and ability to operate a motor vehicle.

WORKING CONDITIONS

Work is performed in industrial and agricultural environments, primarily outdoors throughout California’s Central Valley. Temperatures may range from approximately 30°F in winter to 115°F in summer. The role involves regular exposure to heat, noise, flammable materials, rotating equipment, and other typical industrial hazards. Limited exposure to hazardous materials or fumes may occur, requiring use of approved personal protective equipment.

The position requires the ability to lift up to 50 pounds and to climb ladders and stairs. California Bioenergy® maintains strict adherence to all applicable safety standards and work rules.