Electrical Assembler III

Eslpwr; Corona (CA); On-site; USD 52,000 - 76,000; Full time

Job summary

ESL Power Systems in Corona, CA is seeking an Assembler III to build electrical enclosures, control panels, and related assemblies across configurations. You will read electrical schematics, install components, and perform wiring tasks with minimal supervision while upholding quality and safety.

You’ll support troubleshooting and rework, assist in training Assembler II staff, and help maintain a clean, organized workspace using 5S practices.

Qualifications

• High School Diploma or equivalent preferred.
• Minimum 3 years of experience in manufacturing.
• At least 2 years of experience with electrical wiring, crimping and electrical assembly.
• Ability to read electrical schematics, work tickets and layout drawings.
• Knowledge of electrical components used in control panels and enclosures.
• Ability to work independently with limited supervision.
• Strong attention to detail and commitment to quality.
• Ability to communicate effectively and work well in a team.

Responsibilities

• Assemble electrical enclosures, control panels and related assemblies across configurations and sub-assemblies.
• Read and interpret electrical schematics, layout drawings, and BOMs.
• Install and wire electrical components including breakers, relays, contactors, pushbuttons, terminal blocks and current transformers.
• Perform quality at source (QAS) inspections for other peers as required.
• Route and manage wiring inside enclosures.
• Verify work orders, drawings, and BOMs before assembly.
• Size wires for control and power circuits and perform proper crimping and terminations.
• Use shop equipment including drills, saws, crimping tools, and measuring tools.

Skills

Electrical wiring

Crimping

Reading electrical schematics

Teamwork / communication

Attention to detail

Independent work

Education

High School Diploma or equivalent

Job description

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.

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.

Requirements

SUMMARY

The Assembler III is responsible for assembling electrical enclosures, control panels, and related assemblies in a variety of configurations and sub-assemblies. This role requires the ability to interpret electrical schematics, install components, and perform wiring tasks with minimal supervision. The Assembler III independently completes standard production assemblies, supports troubleshooting and rework activities as needed, and assists in training lower-level assemblers while helping uphold quality and safety standards throughout the production area.

ESSENTIAL DUTIES

• Assembling electrical enclosures, control panels, and related assemblies across a range of configurations and sub-assemblies.
• Read and interpret electrical schematics, layout drawings, and Bills of Materials (BOMs).
• Install and wire electrical components including breakers, relays, contactors, pushbuttons, terminal blocks and current transformers.
• Perform quality at source (QAS) inspections for other peers as required.
• (Peer to Peer check)
• Route and manage wiring inside enclosures.
• Verify work orders, drawings, and BOMs before assembly.
• Size wires for control and power circuits and perform proper crimping and terminations.
• Use shop equipment including drills, saws, crimping tools, and measuring tools.

RESPONSIBILITIES

• Perform self-inspections to support first pass quality.
• Identify drawing issues, missing parts, or assembly problems.
• Assist with troubleshooting and rework when needed.
• Support training of Assembler II employees.
• Maintain a clean and organized workspace using 5S practices.
• Follow all safety procedures and company policies.
• Communicate with leads, supervisors, and team members to support production.
• Demonstrate ESL core values in daily work and teamwork.
• Perform other duties assigned by the supervisor.

QUALIFICATIONS

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily.

• High School Diploma or equivalent preferred.
• Minimum of 3 years of experience in manufacturing or a similar environment.
• At least 2 years of experience with electrical wiring, crimping, and electrical assembly.
• Ability to read and understand electrical schematics, work tickets, and layout drawings.
• Knowledge of electrical components used in control panels and enclosures.
• Ability to work independently with limited supervision.
• Strong attention to detail and commitment to quality.
• Ability to communicate effectively and work well in a team environment.
• Minimum 24 months as an Assembler II
• Maintain a minimum performance rating of 85%
• Must pass Assembler III exam
• Consistent attendance and reliability

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 accommodations may be made to enable individuals with disabilities to perform the essential functions.

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

Standing 33%, sitting 13%, walking 18%, computer use 4%, bending 16%, stooping 16%, lifting up to 50%.

• 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.