Manufacturing jobs in Ontario
Manufacturing produces goods through labor and machinery. Workers operate equipment, monitor production, and ensure quality. Technical skills and attention to detail are vital.
There are 190 manufacturing jobs in Ontario, CA. These manufacturing jobs salaries between $19.84 to $18.74 per hour.
Job title
Updated Sep 10, 2026
Job title
Ontario, CA
California
Job openings (Ontario)
Assembler
Ontario
$18.74
per hour
California
$21.52
per hour
Production Supervisor
Ontario
$80,329
per year
California
$84,996
per year
Production Associate
Ontario
$18.69
per hour
California
$19.75
per hour
Quality Control Associate
Ontario
$19.84
per hour
California
$24.61
per hour
Press Operator
Ontario
$21.65
per hour
California
$23.55
per hour
Job descriptions below are for educational purposes. Please refer to the employer's job description for complete details.
-
Assembler
Review job description
Please refer to the employers job description for complete details.
Assemblers construct product components, follow technical drawings, and ensure quality standards. Proficiency in assembly processes, attention to detail, and tool handling skills are essential.
Assembler jobs take 46 days on average from job posting to starting date. Currently, 2% of job openings are part-time roles.
See 59 jobsAverage pay
Ontario
$18.74 per hourCalifornia
$21.52 per hourSkills
- Assembly
- Manufacturing
- Mechanical knowledge
- Forklift
- Hand tools
-
Production Supervisor
Review job description
Please refer to the employers job description for complete details.
Production supervisors oversee teams, manage production schedules and ensure quality standards. Ideal candidates possess leadership skills, strong problem-solving abilities and have experience in production environments.
Production Supervisor jobs take 45 days on average from job posting to starting date. Currently, 1% of job openings are part-time roles.
See 42 jobsAverage pay
Ontario
$80,329 per yearCalifornia
$84,996 per yearSkills
- Manufacturing
- Production planning
- Supply chain
- Demand planning
- Supply chain management
-
Production Associate
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Please refer to the employers job description for complete details.
Production associates assist in manufacturing processes, ensuring efficiency and quality. Candidates should possess mechanical skills, the ability to follow instructions and a strong work ethic.
Production Associate jobs take 46 days on average from job posting to starting date. Currently, 9% of job openings are part-time roles.
See 36 jobsAverage pay
Ontario
$18.69 per hourCalifornia
$19.75 per hourSkills
- Manufacturing
- Assembly
- Mechanical knowledge
- Forklift
- Warehouse experience
-
Quality Control Associate
Review job description
Please refer to the employers job description for complete details.
Quality control associates conduct inspections of products and materials to ensure compliance with regulations. Key skills for this role include attention to detail, analytical thinking and experience in quality control.
Quality Control Associate jobs take 55 days on average from job posting to starting date. Currently, 7% of job openings are part-time roles.
See 33 jobsAverage pay
Ontario
$19.84 per hourCalifornia
$24.61 per hourSkills
- Quality control
- Quality assurance
- Quality management
- Analysis skills
- ISO 9001
-
Press Operator
Review job description
Please refer to the employers job description for complete details.
Press operators operate machinery to shape materials through pressure. Key skills for this role include machine operation, a strong attention to detail and adherence to safety protocols.
Press Operator jobs take 87 days on average from job posting to starting date. Currently, 1% of job openings are part-time roles.
See 20 jobsAverage pay
Ontario
$21.65 per hourCalifornia
$23.55 per hourSkills
- Manufacturing
- Blueprint reading
- CNC
- CNC programming
- Mechanical knowledge
Frequently asked questions
How are the job titles and salaries chosen for this page?
Jobs listed on this page highlight the top 10 job titles with the most openings as of updated Sep 10, 2026. Salary estimates are taken from job postings on Indeed in the past 36 months and are updated daily. Please refer to the employer's job description for specific salary information.
How does Assembler pay in Ontario compare to the state average?
Assembler professionals in Ontario earn an average of $18.74 per hour, compared with the average in California of $21.52 per hour.
How many job openings are currently available in Ontario?
There are 190 open jobs in Ontario. Assembler, Production Supervisor and Production Associate are among those with the most openings at the moment.
How many openings are available by job title?
There are numerous job openings across all experience levels, with 59 Assembler roles, 42 Production Supervisor roles and 36 Production Associate openings currently listed.