Supervisor Operations and Maintenance
- Location
- Trona, CA
- Work mode
- On-site
- Employment type
- Full-time
About the job
Company Introduction: Over 90 years of quality products and superior service.
Job Summary:
Job Summary The Operations and Maintenance Supervisor will help manage the site operations and repair, alteration and preventative maintenance of the plant to improve the productivity of the operation. He/She will supervise both production operators and maintenance technicians in order to get sustainably meet sales and commercial needs completed in an efficient and effective manner. In conjunction with the site manager, is responsible for balancing priorities, manpower, material, and equipment availability to develop department and individual work schedules. Is responsible for safety, quality of work, and productivity of the workforce through direct leadership and coordination with the sales department in a highly involved work place
Essential Duties
- Supervise all hourly production staff to ensure all orders are met.
- Supervise maintenance technicians and work performed by contractors.
- Manage planned and unplanned maintenance work and jobs for both daily work and maintenance outages.
- Provide on-the-spot, on-the-job equipment-related expertise and technical guidance.
- Enhance communication and coordination between maintenance, operations and sales.
- Effectively manages the utilization of planned maintenance hours to maximize machine line efficiency and production volumes.
- Actively participate in the planning, coordination, and implementation of maintenance activities to ensure they are consistently successfully completed in the allotted time frame while ensuring the work completed allows for excellent machine reliability.
- Follow up on issues that did not go as planned during shutdowns and implement methods to prevent future occurrences.
- Provide a safe work place through adherence to company safety policy, housekeeping and defined standards of training.
- Lead site wide safety meetings. Monitor compliance to safety policies and procedures, conduct inspections of plant areas, and ensure deficiencies found are resolved or appropriately communicated.
- Ensure all hourly personnel are well trained, involved, and committed to meeting department expectations including following all safety requirements.
- Provide leadership in department and administrative support required to be an effective supervisor.
- Observe employee work skills and provide on-the-job training, tutoring and coaching.
- Suggest ways to improve methods, procedures and work practices.
- Address performance issues promptly and in a fair and consistent manner and provide effective and timely feedback using the performance evaluation process.
- Schedule work days and off days of employees in conjunction with plant manager, track and approve or deny vacation as well as floating holidays based on work requirements.
- Provide direct input in the hiring of maintenance technicians and assist with interviews for other positions such as engineers. Identify continuing or new training requirements for the department.
- Ensure employees are well trained, involved, and committed to meeting department expectations including following all safety requirements.
- Inspect completed work to ensure quality and reduce rework.
- Support department expense target goals by minimizing maintenance costs without negatively impacting operating results.
- Support efforts to minimize cost for major repair items and efforts to minimize purchased maintenance costs by utilizing company personnel for maintenance and capital projects versus using outside contractors whenever possible.
- Evaluate alternative parts or new suppliers to improve costs. Identify shop and fabrication work opportunities that can be performed in house versus being completed by outside resources.
- Support efforts for the large capital projects within the plant. Participate in maintenance efforts to review equipment design, layout, and safety related aspects of new equipment.
- Collaborate with the Sales department to develop and trial new products.
- Communicate project plans and progress to the site employees and be a conduit for employee suggestions and concerns.
- Ensure all personnel understand changes that will result from new equipment.
- Maintain onsite inventory and keep inventory count up to date in management systems.
- Submit purchase requisitions for all site supplies and purchases.
- Submit capital requests and assist with capital project management
- supervisor 12 direct reports across 2 departments
Competencies
- Safety Leadership
- Communication
- Decision Making
- Positive Approach
- Creating a Culture of Trust
- Emotional Intelligence Essentials
- Coaching
- Adaptability
- Resolving Conflict
- Guiding Team Success
- Driving for Results
Qualifications Required
- H.S. Diploma or General Education Degree (GED) with at least 5+ years practical experience as a mechanic or electronic technician in a high volume manufacturing operation, preferably continuous process required
- Technical school training/diploma/certification preferred
- Intermediate proficiency using root cause analysis to troubleshoot and solve problems, proficiency in electrical distribution systems and instrumentation, proficiency in PLC programming, debugging and troubleshooting.
- Candidate must be able to maintain electronic, pneumatic and hydraulic systems as well as have intermediate proficiency using variable frequency drives and AC & DC drives.
- Should have knowledge of rotating equipment, machine design, bearings and lubrication.
- Ability to read blueprints, schematics, shop drawings, and sketches is required and the candidate must be familiar with standard manufacturing concepts, practices, and procedure.
General Knowledge, Skills and Abilities
- Strong Communication Skills
- Analytical and problem solving skills
- Ability to lead/influence/manage people
- Establish and maintain standards of performance and accountability
- Proficient in Microsoft or Google Suite
Technical Knowledge, Skills and Abilities
- Intermediate proficiency using root cause analysis to troubleshoot and solve problems
- Proficiency in electrical distribution systems and instrumentation
- Proficiency in PLC programming, debugging and troubleshooting.
- Proficiency with electronic, pneumatic and hydraulic systems as well as intermediate proficiency using variable frequency drives and AC & DC drives.
- Knowledge of rotating equipment, machine design, bearings and lubrication.
- Ability to read blueprints, schematics, shop drawings, and sketches
- Familiar with standard manufacturing concepts, practices, and procedure.
Physical Demands
- Stationary Position - Frequently
- Move/Traverse - Frequently
- Stationary Position/Seated - Frequently
- Transport/Lifting - Rarely (50)
- Transport/Carrying - Rarely
- Exerting Force/Pushing - Rarely
- Exerting Force/Pulling - Rarely
- Ascend/Descend - Frequently
- Balancing - Rarely
- Position Self/Stooping - Occasionally
- Position Self/Kneeling - Occasionally
- Position Self/Crouching - Occasionally
- Position Self/Crawling - Occasionally
- Reaching - Occasionally
- Handling - Occasionally
- Grasping - Occasionally
- Feeling - Occasionally
- Communicate/Talking - Frequently
- Communicate/Hearing - Frequently
- Repetitive Motions - Frequently
- Coordination - Occasionally
- Climbing - Occasionally
Working Conditions
- Extreme cold - Occasionally
- Extreme heat - Occasionally
- Humid - Occasionally
- Wet - Occasionally
- Noise - Occasionally
- Hazards - Occasionally
- Temperature Change - Occasionally
- Atmospheric Conditions - Occasionally
Leadership/Supervisor Experience
- 1-2 years supervisor experience in a mining/manufacturing operation.
Dimensions Number of Indirect Reports: 0 Number of Direct Reports: 12 Travel Requirements: 5% Limited domestic travel
Pay Transparency
Base salary and/or rate of pay ranges listed are exclusive of fringe benefits and potential bonuses. Individual compensation offers will be determined based on a variety of factors, including but not limited to geographic location, relevant candidate experience and skill, education, and/or qualifications.
Base Salary Range: $88,000-$121,000
At Specialty Granules LLC , we believe our employees are our greatest resource. We offer competitive salary, benefits, and vacation package for all full-time permanent positions.
Must be eligible to work in the U.S. without need for employer-sponsored visa (work permit). If you are currently an SGI employee, please do not apply here. Please apply through the "Jobs Hub" section, which can be accessed under your Apps in Workday.
SGI is proud to be an equal opportunity workplace. We are committed to equal employment opportunity on the basis of each candidate's qualifications, experience, and merit, without regard to race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, or any other characteristic protected by law. SGI complies with federal, state, and local disability laws and makes reasonable accommodations for applicants and employees with disabilities. If a reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please contact HR Services at 833-HR-XPERT.
From Gafsgi's careers page (Workday), checked 10 Nov 2026.
How to apply
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Posted 10 Nov 2026 · checked 10 Nov 2026 · Report this job