Production Supervisor at ESL POWER SYSTEM INC – Corona, California

Power Your Career with Purpose at ESL Power Systems

At ESL Power Systems, we’re more than a workplace — we’re an employee-owned community committed to building high-quality electrical solutions and strong careers. When you join ESL, you don’t just take a job — you become an owner, sharing in the success you help create.

Our Values Drive Everything We Do

Our culture is grounded in five core values that guide how we work, collaborate, and grow:

• Ownership – We think long-term and take pride in our work.
• Adaptability – We embrace change and solve problems together.
• Teamwork – We win as one team across departments.
• Continuous Improvement – We’re always learning and getting better.
• Excellence in Customer Experience– Quality and accountability matter.

These values aren’t just words — they show up in our daily decisions, our teamwork on the floor, and how we support one another.

Why ESL?

• Employee Ownership (ESOP): As an employee-owned company since 2019, ESL contributes annually to your ESOP account at no cost to you — allowing you to build long-term wealth alongside company growth.
• Meaningful Work: Your contributions directly support critical electrical infrastructure projects that power communities and industries.
• Career Growth and Stability: We’re a growing company with strong leadership, long-term vision, and meaningful projects. From training to internal growth opportunities, we invest in building careers, not just filling roles.

What We Offer

We support our employee-owners with a competitive and comprehensive benefits package, including:

• Medical, Dental, and Vision coverage
• 401(k) with company match
• Employee Stock Ownership Plan (ESOP)
• Bonus potential tied to company performance
• Paid Time Off, holidays, and work-life balance
• Training, development, and recognition programs
• Year-around employee engagement events

Join a Company Where People Come First

At ESL, we believe work should be challenging, rewarding, and human. We celebrate wins, support growth, and foster a workplace where people feel valued and connected.

Join ESL Power Systems — where your work has impact, your voice matters, and your career grows with ownership

SUMMARY:

Responsible for leading the Accessories Department, which includes the Module Line, Min-Max system, and Kits & Receptacle Line. Ensures efficient production flow, material control, and quality output in alignment with ESL’s production standards and delivery goals

ESSENTIAL DUTIES AND RESPONSIBILITIES:

· Supervise daily operations across the Accessories Department, including Module Line, Kits, and Receptacle Line, ensuring production efficiency and adherence to quality standards.

· Supervise daily operations across the Accessories Department, including Module Line, Kits, and Receptacle Line, ensuring production efficiency and adherence to quality standards.

· Manage and oversee the department’s Min-Max process to maintain proper inventory levels, reduce shortages, and support on-time manufacturing.

· Plan, organize, and monitor production schedules to meet delivery commitments and align with company goals.

· Estimate manpower and material requirements based on workload and forecast; communicate needs to Scheduling and Operations.

· Track departmental performance metrics such as On-Time Manufacturing (OTM), On-Time Delivery (OTD), and Cost of Poor Quality (COPQ).

· Coordinate with Planning, Engineering, and Customer Service to ensure production meets customer expectations and internal schedules.

· Monitor machine and equipment performance; coordinate necessary repairs or preventive maintenance with the Operations Manager.

· Maintain 5S standards and promote a culture of safety, quality, and continuous improvement.

· Train and develop team members for skill advancement and promote high levels of performance, accountability, and morale.

· Evaluate employee performance, recommend promotions or disciplinary actions as necessary, and maintain team alignment with company values.

· Recommend process improvements, tools, or technology to enhance efficiency and quality.

· Ensure finished products are completed and transferred to Quality Control and Shipping on schedule.

· Collaborate with Quality Control to address any non-conformance or rework issues.

· Engage and model ESL’s Core Values daily, reinforcing ownership and teamwork throughout the department.

· Implement and uphold all Company Safety and Health Programs and policies.

· Perform other duties or special projects as assigned.

QUALIFACTIONS:

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and or ability required. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

· Strong leadership and organizational skills with the ability to manage multiple product lines.

· Excellent communication, problem-solving, and decision-making abilities.

· Working knowledge of production planning, material flow, and Min-Max inventory systems.

· Computer literate with proficiency in production tracking software (e.g., Epicor preferred).

· Detail-oriented, analytical, and adaptable to fast-paced environments.

EDUCATION and/or EXPERIENCE:

· This position requires a high school diploma or equivalent.

· Minimum of 5 years of supervisory experience in production and operations.