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Plant Operations Assistant Jobs in California (NOW HIRING)

Pencco, Inc

Assistant Plant Manager

Vernon, CA · On-site

The Assistant Plant Manager will be responsible for assisting the Plant Manager (PM) with all aspects of operations at the chemical manufacturing facility, ensuring safety, efficiency, and regulatory ...

Marvin Group

OPERATIONS FINANCE MANAGER

Inglewood, CA · On-site

Build relationships at all levels of plant operations including work center, cost center ... Support Lean and continuous process improvement. * Assist in ensuring that the Manufacturing cost ...

Marvin Group

OPERATIONS FINANCE MANAGER

Inglewood, CA · On-site

Build relationships at all levels of plant operations including work center, cost center ... Support Lean and continuous process improvement. * Assist in ensuring that the Manufacturing cost ...

DTE Energy

Utility Plant Assistant Manager

Woodland, CA · On-site

$125K - $187K/yr

Woodland, CA The Assistant Plant Manager (APM) provides leadership to the operations and maintenance groups for the daily operation of the facility under the general direction of the Plant Manager.

DTE Energy

Utility Plant Assistant Manager

Woodland, CA · On-site

$125K - $187K/yr

Woodland, CA The Assistant Plant Manager (APM) provides leadership to the operations and maintenance groups for the daily operation of the facility under the general direction of the Plant Manager.

Recochem Corporation

Plant Controller

Torrance, CA · On-site

$120K - $135K/yr

Communicates with plant personnel and observes plant operations to assist with and to make recommendations for improvement in plant operations. * Special Projects as required. Requirements:

Holliday Rock

Plant Assistant Ready-Mix

Vernon, CA · On-site

$23 - $25/hr

The Plant Assistant works under the direction of the Area Manager, Plant Manager, or Assistant ... This role includes general labor, equipment operation, and maintenance duties to ensure smooth ...

Holliday Rock

Plant Assistant Ready-Mix

Goleta, CA · On-site

$25/hr

The Plant Assistant works under the direction of the Area Manager, Plant Manager, or Assistant ... This role includes general labor, equipment operation, and maintenance duties to ensure smooth ...

Manufacturing

Plant Manager

Newark, CA · On-site

$90K - $110K/yr

The production Manager is to assist in development and optimization of the manufacturing processes ... Ability to work effectively and independently on plant operations and projects as a member or ...

Specialized Packaging Group

Plant Manager

Newark, CA · On-site

$100 - $125/hr

The production Manager is to assist in development and optimization of the manufacturing processes ... Ability to work effectively and independently on plant operations and projects as a member or ...

Nrg Bluewater Wind

Plant Specialist

Nipton, CA · On-site

$76.60 - $125.40/hr

The Plant Electrical Specialist's primary responsibility is to support overall plant reliability ... * Assist in training personnel on system operations within areas of expertise. * Provide technical ...

NRG

Plant Specialist

Nipton, CA · On-site

The Plant Electrical Specialist's primary responsibility is to support overall plant reliability ... * Assist in training personnel on system operations within areas of expertise. * Provide technical ...

NRG Energy

Plant Specialist

Nipton, CA · On-site

The Plant Electrical Specialist's primary responsibility is to support overall plant reliability ... * Assist in training personnel on system operations within areas of expertise. * Provide technical ...

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Plant Operations Assistant information

What is a plant operations assistant?

Plant Operations Assistants are support staff who help ensure that industrial or manufacturing facilities run smoothly. Their duties often include monitoring equipment, performing basic maintenance, assisting with inventory management, and helping maintain safety and cleanliness standards. They work under the supervision of plant managers or engineers and may be involved in coordinating with other departments to support overall plant operations. This role is essential for minimizing downtime and aiding the efficient operation of the facility.

What does a plant operations assistant do?

A typical day for a Plant Operations Assistant involves supporting the smooth running of facility operations by assisting with equipment maintenance, monitoring supply levels, and ensuring compliance with safety protocols. You may be responsible for coordinating minor repairs, updating maintenance logs, and collaborating with technicians and supervisors to address any urgent operational issues. The role often requires flexibility and strong organizational skills, as priorities can shift based on production needs or unexpected equipment concerns. Working closely with other departments, you'll play a vital part in maintaining an efficient and safe plant environment.

What skills and qualifications are needed to thrive as a plant operations assistant?

To thrive as a Plant Operations Assistant, you need a basic understanding of facility maintenance, equipment operation, and general safety procedures, often supported by a high school diploma or equivalent. Familiarity with maintenance management systems, hand tools, and possibly certifications in OSHA safety standards is typically required. Attention to detail, strong communication, and reliability are crucial soft skills for excelling in this role. These abilities ensure smooth plant operations, help prevent accidents, and support efficient teamwork and compliance with safety protocols.

What is the difference between Plant Operations Assistant vs Maintenance Technician?

AspectPlant Operations AssistantMaintenance Technician
CredentialsHigh school diploma or equivalent; certifications varyHigh school diploma; technical certifications often preferred
Work EnvironmentIndustrial plants, manufacturing facilitiesIndustrial plants, manufacturing facilities
Job FocusAssisting daily plant operations, monitoring equipment, supporting staffRepairing, maintaining, and troubleshooting equipment
Employer UsageManufacturing, energy, utilitiesManufacturing, energy, utilities

While both roles work within industrial settings, a Plant Operations Assistant primarily supports daily plant functions and operations, whereas a Maintenance Technician focuses on equipment repair and maintenance. The roles often overlap but differ in their core responsibilities and skill sets.

How much does a plant operations assistant get paid?

The average salary for a plant operations assistant typically ranges from $35,000 to $50,000 per year, depending on experience, location, and industry. Entry-level positions may start lower, while experienced assistants or those with specialized skills can earn higher wages. Compensation often includes benefits such as health insurance and paid time off.

What does a plant operations assistant get paid?

The average salary for a plant operations assistant typically ranges from $35,000 to $50,000 per year, depending on experience, location, and industry. Entry-level positions may start lower, while experienced assistants or those with specialized skills can earn higher wages. Compensation often includes benefits such as health insurance and paid time off.

What are the most commonly searched types of Plant Operations jobs in California?

The most popular types of Plant Operations jobs in California are:

What cities in California are hiring for Plant Operations Assistant jobs?

Cities in California with the most Plant Operations Assistant job openings:

Plant Operations Assistant jobs near you
Infographic showing various Plant Operations Assistant job openings in California as of August 2026, with employment types broken down into 82% Full Time, 15% Part Time, and 3% Contract. Highlights an 93% Physical, 3% Hybrid, and 4% Remote job distribution.

Assistant Plant Manager

Pencco, Inc

Vernon, CA • On-site

Full-time

Posted 8 days ago

Key responsibilities

  • Assist the Plant Manager with overseeing plant operations, safety, and regulatory compliance.

  • Support safety training, incident investigations, and ensure proper PPE usage.

  • Help manage inventories, equipment maintenance, and coordinate rail operations as needed.

Job description

Description:

Job Overview:

The Assistant Plant Manager will be responsible for assisting the Plant Manager (PM) with all aspects of operations at the chemical manufacturing facility, ensuring safety, efficiency, and regulatory compliance. This role includes participating in safety training, maintaining inventories, responsible for equipment and vehicle maintenance, and coordinating rail operations when needed. The Assistant Plant Manager will also help to ensure proper PPE usage, investigate incidents, and communicate operational needs to management. In the absence of the Plant Manager the Assistant Plant manager will assume all duties of the Plant Manager.


Duties/Responsibilities:

  • Aid in the activities of plant employees involved in the transfer, handling, and storage of chemicals used in manufacturing.
  • Remain aware of the plant’s employees schedules to meet customer demand.
  • Review and approve employee timecards for payroll processing in the absence of the PM
  • Provide support to the PM for counseling and corrective actions for employees as needed to address performance or behavioral issues.
  • Assist with the hiring and onboarding of new employees when needed by the PM.
  • Ensure employees utilize the proper personal protective equipment (PPE) in accordance with safety standards.
  • Attend biweekly safety training, including HAZMAT procedures, emergency response protocols, and proper handling of chemicals
  • Provide support to PM for accident investigations for all workplace incidents or near misses, identify-ing root causes and implementing corrective actions as necessary.
  • Stay informed about rail handling operations.
  • Ensure plant operations comply with state, federal, and environmental regulations.
  • Communicate with PM operational and equipment needs effectively to management.
  • Be aware of raw material inventories, ensuring timely replenishment 
  • Monitor and maintain the equipment maintenance program
  • Oversee the maintenance and monthly inspections of plant vehicles.
  • Assist the PM in communicating with customers to address inquiries and resolve issues in a timely and professional manner.
  • Assist with additional projects and other tasks as assigned.


Requirements:

Required Skills/Abilities:

  • Understanding of chemical processes and lab testing procedures.
  • Strong leadership and team management skills.
  • Excellent verbal and written communication.
  • Skilled in employee training and development.
  • Exceptional organizational and follow-up skills.
  • Ability to stand, walk, climb, crouch, and wear safety gear for extended periods.
  • Experience operating heavy machinery (forklifts, excavators, loaders, bobcats) preferred.
  • Capable of lifting 50lbs or more.

Education and Experience:

  • High School Diploma or equivalent required.
  • Additional education or experience in a related field may be required 
  • 3 years of manufacturing experience
  • 3 years of maintenance experience
  • 2 years of management experience