Quality Control Inspector I

ESL POWER SYSTEM INC; Corona (CA); On-site; USD 33,000 - 36,000; Full time

Benefits offered by this job

ESOP

Medical/Dental/Vision

401(k) with company match

Bonus potential

PTO and holidays

Training and development

Job summary

ESL Power Systems in Corona, California seeks a Quality Control Inspector I to perform receiving, in-process, final, and RMA inspections, verifying components and assemblies meet drawings, specifications, and customer requirements.

You will conduct electrical testing from 120V to 480V using Hi-Pot, Megger, multimeters, load banks, and current clamps, maintain accurate records in Epicor/MES, create DMRs, and communicate discrepancies while upholding safety and quality procedures.

Qualifications

• Read and interpret drawings, schematics, and specifications.
• Fundamental QC principles and inspection techniques.
• Proficient with measuring tools and test equipment.
• Data entry and document control experience.
• Ability to follow SOPs and work instructions.

Responsibilities

• Perform receiving, in-process, final, and RMA inspections.
• Read and interpret drawings and specifications.
• Verify dimensions, materials, finishes, labels, quantities, assembly workmanship, and wiring against requirements.
• Conduct electrical testing (120V-480V).
• Process inspection transactions in ERP/MES.
• Create DMRs and evaluate RMAs.
• Document inspection results and capture photos for traceability.
• Support padmount inspections and point-to-point verification.
• Report discrepancies to appropriate personnel.
• Follow safety and testing procedures.

Skills

Reading drawings

QC principles

Inspection tools

Microsoft Office

ERP/MES systems

Tools

Calipers

Multimeter

Hi-Pot tester

Megger tester

Job description

Quality Control Inspector I

ESL POWER SYSTEM INC Corona, California, United States

About this position

Description:

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.

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

Performs receiving, fabrication, in-process, final, and return material inspections under the general supervision of the QC Manager or senior QC personnel. Verifies that products and materials including fabricated metal components, wiring assemblies, and finished electrical assemblies meet drawing requirements, specifications, workmanship standards, and customer requirements using established inspection methods, work instructions, and test procedures. Conducts standard electrical testing (120V-480V), maintains accurate documentation, creates DMRs, processes RMAs, and communicates discrepancies through established channels. This position requires strict adherence to electrical safety procedures while performing testing on equipment ranging from 120V through 480V using equipment such as Hi-Pot testers, Megger testers, load banks, multimeters, current clamps, phase rotation testers, and other electrical test equipment. Safety, quality, and compliance with established procedures, work instructions, and testing protocols are essential functions of this role.

ESSENTIAL DUTIES

• Perform receiving, in-process, final, and RMA inspections per established procedures.
• Read and interpret drawings, schematics, specifications, and quality documentation.
• Verify dimensions, material types, finishes, labels, quantities, assembly workmanship, and wiring against requirements.
• Conduct electrical testing (120V-480V) using Hi-Pot testers, Meggers, multimeters, phase rotation testers, and load banks.
• Perform receiving inspections using AQL sampling plans.
• Process inspection transactions in Epicor/MES and maintain accurate records.
• Create DMRs and evaluate RMAs per department procedures.
• Capture and upload photographs and supporting documentation for traceability.
• Assist with padmount inspections and point-to-point verification.
• Identify and communicate discrepancies to appropriate personnel.
• Follow all established quality, safety, and testing procedures.

RESPONSIBILITIES

• Maintain compliance with energized testing procedures, barriers, and PPE requirements.
• Support inspection activities across both buildings as required to meet business needs.
• Adhere to all department protocols, safety requirements, and work instructions.
• Support torque calibration and preventive maintenance of inspection equipment.
• Maintain a clean, organized work area per 5S standards.
• Document inspection and test results accurately in required systems.
• Communicate nonconformances to Leads, Supervisors, and Engineering as needed.
• Participate in continuous improvement activities.
• Assist with training and contribute to work instruction development where proficiency is demonstrated.
• Perform other duties as assigned.

QUALIFICATIONS

• 1-2 years of relevant experience.
• Working proficiency reading technical drawings, schematics, and specifications.
• Foundational knowledge of QC principles, inspection techniques, and industry standards.
• Proficient with standard measuring tools and test equipment (calipers, multimeter, etc.).
• Ability to follow SOPs, Work Instructions, and verbal direction.
• Strong attention to detail; ability to identify and report discrepancies.
• Basic math skills and data recording accuracy.
• Computer proficiency including Microsoft Office and ERP/MES systems.
• Effective written and verbal communication skills.
• Ability to work independently within established processes.
• Ability to travel locally as needed

PHYSICAL DEMANDS

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform essential functions.

While performing the duties of this job, the employee will be:

• Standing 35%
• Sitting 10%
• Walking 25%
• Computer use 15%
• Bending 15%
• Stooping 10%
• Lifting up to 50 lbs.
• Work with ladders up to 12 feet.
• Wear common protective or safety equipment such as safety shoes and safety glasses

WORK ENVIRONMENT

While performing the duties of this job, the employee is regularly exposed to normal operating working conditions. The noise level in the work environment is usually moderate.

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

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.

Salary Information

$23.59 - $25.52Hourly Wage