Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.

A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a/an Assistant Production Manager 2ns shift located in Fontana, CA.

Reporting to the Sr. Production Manager, the Assistant Production Manager is responsible for overseeing front-line employees in an assigned department to ensure efficiency and quality in production operations.

What a typical day looks like:

• Oversees the daily workflow and schedules of the department. 

• May handle discipline and termination of employees in accordance with company policy.

• Identifies and corrects problems and inefficiencies in process, materials, equipment, or skills.

• Develops and implements procedures and strategies to ensure a safe work environment.

• Provide recommendations to increase productivity and efficiency of the department.

The experience we’re looking to add to our team,

• Open associates degree (Management, Engineering, Business). 

• At least 5 years of experience in a manufacturing environment.

• At least 3 years of experience in a supervisory capacity (50 – 100 employees)

• Experience in industrial electrical industry (critical infrastructure).

• Proficient with Microsoft Office Suite or related software.

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Application Deadline:

Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume.

Job Posting Start Date 09-01-2026 Job Posting End Date 11-03-2026

The base pay range for this position is provided below. The final base rate offered will be determined using job-related, non-discriminatory criteria, including but not limited to experience, qualifications, geographic location, education, external market data, and internal equity.

$75,300.00 USD - $103,600.00 USD Annual

Job Category

Operations

Relocation: Not eligible

Is Sponsorship Available?

No

Flex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).