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Compost Facility Supervisor at City of Modesto – Modesto, California

City of Modesto
Modesto, California, 95358, United States
Posted on
Salary:$84115 - $92747Employment Type:Full-Time

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About This Position

Join the City of Modesto as our next Compost Facility Supervisor, leading critical operations that turn organic material into a sustainable community resource. We’re seeking a skilled professional with solid waste, recycling, or composting experience—including supervisory responsibility—to help guide the future of our facility. Candidates with agricultural, soil, or environmental science education and the ability to obtain a California Commercial Driver's License are encouraged to apply.
Upcoming Salary Increases and Incentives:
3% COLA effective July 1, 2026
2.5% Education Incentive (Bachelor's Degree)
5% Education Incentive (Master's Degree)

The City of Modesto is currently seeking a candidate to join our Composting Operations Team as a Compost Facility Supervisor. The Compost Facility Supervisor is responsible to plan, organize, direct, and supervise the work of crews engaged in compost site operations, maintenance, repair, and/or construction work; and to perform a variety of technical tasks related to assigned area of responsibility.

We are seeking a candidate with experience managing all aspects of composting operations including daily processing of material, supervision of employees, maintaining safety standards, compliance with government regulations, and the sales/marketing of end products.

Application Process
Applicants will be assessed on the application submitted. Due to the volume of applications received, resumes will not be screened for the purpose of determining who is the most qualified to compete in the testing process. It is the applicant's responsibility to fill out the "Education" and "Work Experience" sections of the application with complete information and adequate detail. Do not substitute any part of the application with the words "SEE RESUME."
Applicants considered to be the most qualified will be invited to continue in the testing process. The Human Resources Department reserves the right to revise the testing process to best meet the needs of the City.
Tentative Testing Schedule
In-person Written Exam
Week of March 16, 2026
The City of Modesto is an equal opportunity employer. We are committed to fostering, cultivating and preserving a culture of diversity, equity and inclusion. A City application is required, including Supplemental Questionnaire.

Essential and other important responsibilities and duties may include, but are not limited to, the following:

Essential Functions:

Recommend and assist in the implementation of goals and objectives; establish schedules and methods for operating, repairing, and maintaining the City’s compost facility; implement policies and procedures.

Plan, prioritize, assign, supervise, and review the work of staff involved in the operations, maintenance, repair, and construction of City compost facility activities, infrastructure, equipment, grounds, and land.


Evaluate operations and activities of assigned responsibilities; recommend improvements and modifications; prepare various reports on operations and activities.


Participate in budget preparation and administration; prepare cost estimates for budget recommendations; submit justifications for equipment, materials, and supplies; monitor and control expenditures.


Participate in the selection of staff; provide or coordinate staff training, including in the full range of compost facility operations, maintenance, repair, and construction; work with employees to correct deficiencies; implement discipline procedures.

Coordinate the work unit safety program, including ensuring that training is provided as appropriate.


Manage the sales of organic products to landscapers, wholesalers, retailers, farmers, nurseries, and governmental agencies


Ensure product quality programs are followed and processing standards are met


Achieve productivity and throughput standards through staff training and process planning


Assist in estimating and scheduling work and in determining type and quantities needed for such work.


Oversee sales and marketing initiatives related to compost products.


Assist in project management.


Develop and maintain preventative maintenance, asset, and equipment inventory programs.


Make recommendations and supervise the use of specialized material processing equipment involved in composting.


Maintain accurate and up-to-date records and conduct monitoring and testing programs as required by federal and state laws and regulations.


Oversee operation of a full range of heavy and light equipment as needed such as grinders, screens, windrow turners, water trucks, loaders, dump trucks, etc.


Provide technical advice and assistance to subordinate staff.


Maintain time, material, and equipment use records.


Requisition supplies and materials.


Answer questions and provide information to the public; investigate complaints and recommend corrective action as necessary to resolve complaints.


Build and maintain positive working relationships with co-workers, other City employees, and the public using principles of good customer service.


Observe and maintain a safe working environment in compliance with established safety programs and procedures.


Marginal Functions:

Perform related duties as assigned.
Knowledge of:

Materials, methods, practices, equipment, and elements of compost facility operations.

Basic composting science, theories of compost production, compost analysis, regulations, and testing, heavy equipment operation and maintenance

Principles and practices of windrows and Aerated Static Pile material processing systems

Types and levels of operations, maintenance, and repair activities performed in a compost operation.

Principles and practices of supervision, training, and performance evaluation.

Principles and practices of budget development, implementation, and monitoring.

Principles and practices of safety management.

Pertinent OSHA, DOT, federal, state, and local laws, codes, rules, and regulations, including those pertaining to compost facility operations.

Report writing procedures.

Principles and practices of cost accounting.

Office procedures, methods, and equipment including computers and applicable software applications such as word processing, spreadsheets, and databases.

Ability to:

Organize, implement, and direct compost facility operations and activities.

Plan, estimate, direct, coordinate, schedule, and review the work of others.

Supervise, train, and evaluate staff.

Write and apply for federal, state and local grants.

Operate and maintain equipment and tools used in the field.

Identify and implement effective courses of action to complete assigned work relating to regulatory material processing requirements.

Interpret, explain, and apply federal, state, local, and department policies, procedures, laws, rules, and regulations.

Assist in the development and monitoring of an assigned program budget.

Coordinate work assignments with other divisions, departments, and outside agencies and organizations.

Identify and analyze problems within the facility’s operations, make recommendations and implement corrective actions

Develop and recommend policies and procedures related to assigned operations.

Prepare technical reports and memoranda in a well-constructed and concise manner.

Communicate clearly and concisely, both orally and in writing.

Establish and maintain positive, cooperative working relationships with assigned staff, other City departments and divisions, vendors, customers, contractors, and regulatory agencies.

Operate office equipment including computers and supporting word processing, spreadsheets, database applications, and complex scale and compost operations software is desirable.

Experience and Training Guidelines:
Any combination of experience and training that would likely provide the required knowledge and abilities is qualifying. A typical way to obtain the knowledge and abilities would be:
Experience:
Three years of increasingly responsible experience in solid waste, recycling, or composting program operations, or related field, including one year of supervisory responsibility. Experience in compost facility operations is desirable.
Training:
Equivalent to an Associate’s Degree with major coursework in an agricultural field of study, crop or soil science, environmental science, or related field.
License or Certificate:
Possession of a valid Class A or Class B Commercial California driver’s license with specific endorsements, as assigned, is required within sixty (60) days of appointment.
Completion of United States Composting Council (USCC) Compost Operations Training Course completed within probationary period.
Possession of Overton’s Safety Training Certification for Front End Loader completed within probationary period.
Completion of Solid Waste Association of North America’s (SWANA) training, Managing Composting Programs completed within probationary period.
Possession of USCC’s Compost Operations Manager Certification is required within thirty six (36) months of appointment.
**Failure to obtain any of the required licenses/certificates within the prescribed time may result in release from probation or termination.

Mobility: occasional performance of manual labor; frequent standing for long periods of time; frequent bending and squatting. Lifting: frequently up to 50 pounds; occasionally up to 75 pounds. Vision: constant use of overall vision. Dexterity: frequent grasping, holding, and reaching. Hearing/Talking: frequent hearing and talking in person. May be required to wear ear protection or hear in noisy conditions. Emotional/ Psychological: frequent coworker contact; occasional working alone. Environmental: frequent exposure to loud noise; frequent exposure to chemicals, fumes, and other environmental substances.

WORKING CONDITIONS

Work is performed in a typical outdoor environment on a year-round basis as is subject to typical street or field noise and environment including exposure to loud equipment and machinery; exposure to noise, dust, grease, smoke, fumes, gasses, wastewater biosolids, and potentially hazardous chemicals. Positions may be assigned to remote locations. Positions may require occasional overtime or weekend work and travel is rare.

Job Location

Modesto, California, 95358, United States

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