Assistant Production Engineer
Confirmed on the employer's own hiring board on Oct 26, 2026. First seen by Alion on Oct 23, 2026.
Join a manufacturing leader with over 50 years of excellence, where every role contributes to building reliable transportation solutions that people depend on everyday across the United States and Canada. At ENC, we prioritize safety, quality, innovation, collaboration, and continuous growth - creating vehicles our teams can take pride in.
Founded in 1975, ENC (ElDorado National - California) is a leading U.S. transportation manufacturer specializing in design, engineering, and end-to-end production of heavy-duty buses, shuttles, and cargo vehicles through a custom-build, mixed-model assembly process. Each vehicle is produced in our purpose-built facility in Riverside, California supporting public agencies and private transportation providers nationwide. We offer one of the industry’s widest portfolios of power options, including 100% battery-electric, diesel-electric hybrid, CNG, and clean diesel.
ENC is committed to revitalizing American manufacturing through innovation, customer focus, and the delivery of high-quality vehicles that keep communities connected, supported, and moving forward.
Assistant Production Engineer
Location: Riverside, CA
Salary Range: $80,000 - $115,000
Position Summary
We are seeking an Assistant Production Engineer with extensive hands-on experience in commercial vehicle manufacturing and production floor operations. This role supports the Process Engineer in preparing production documentation, inspecting components and assemblies, verifying new product quality and functionality, and maintaining a safe and organized prototype vehicle work area.
The ideal candidate can interpret engineering drawings and electrical schematics, troubleshoot vehicle systems, and work closely with engineering and production teams to identify and resolve issues before installation.
Key Responsibilities
This list of essential duties is not all-inclusive and may be expanded to include other duties, as management may deem necessary from time to time. The team member must be able to perform each essential job duty identified below satisfactorily. Reasonable accommodations may be made to enable qualified individuals with disabilities to perform the essential duties of this position unless doing so would create an undue hardship.
Production Documentation and Process Support
- Work with the Process Engineer to create and update production bills of materials (BOMs), production drawings, assembly instructions, and work instructions.
- Translate engineering requirements into clear, practical instructions for production personnel.
- Verify that production documents reflect approved designs, component requirements, and assembly sequences.
- Identify drawing discrepancies and assembly concerns and coordinate their resolution with engineering.
In-House Parts and Wiring Inspection
- Assist with inspecting in-house manufactured parts against approved drawings and specifications before installation.
- Pay particular attention to wires and harnesses, verifying wire size, length, identification, connector selection, pin assignments, crimps, routing provisions, and workmanship.
- Perform continuity and other specified electrical checks using appropriate test equipment and approved procedures.
- Document discrepancies and support corrective actions to minimize wiring changes and rework after installation.
New Product Inspection and Functional Verification
- Assist the Process Engineer with quality inspections and functional checks for newly developed products, components, and prototype vehicles.
- Prepare inspection checklists, test records, and inspection reports based on engineering requirements and approved acceptance criteria.
- Record results, identify nonconforming conditions, and track corrective actions through reinspection.
- Support troubleshooting of electrical, mechanical, and vehicle control system issues during assembly and testing.
Prototype Area Safety and Organization
- Assist production personnel in maintaining a safe, clean, and organized prototype vehicle development area.
- Support proper storage, labeling, and handling of tools, parts, wiring, and test equipment.
- Keep work areas and access routes clear, identify hazards, and report unsafe conditions promptly.
- Follow established shop safety procedures and support consistent housekeeping and 5S practices.
Position Requirements
- 10+ years of hands-on production floor experience, including at least 5 years of direct experience in commercial vehicle manufacturing.
- Ability to read and interpret 2D engineering drawings, navigate 3D models, and understand assembly requirements.
- Ability to read electrical schematics, wiring diagrams, harness drawings, and connector pinout information.
- Working understanding of programming concepts and vehicle control logic sufficient to support functional checks and troubleshooting.
- Practical experience troubleshooting vehicle electrical and mechanical systems.
- Experience inspecting fabricated parts, wiring, harnesses, and assemblies against drawings and specifications.
- Ability to use common inspection tools and electrical diagnostic equipment, including multimeters.
- Ability to prepare accurate BOMs, work instructions, inspection checklists, and technical records.
- Strong attention to detail, practical problem-solving skills, and clear communication with engineering and production personnel.
- Ability to work safely and effectively in a hands-on manufacturing and prototype development environment.
Preferred Qualifications
- Experience with commercial electric vehicles, vehicle electrical integration, and prototype builds.
- Familiarity with CAD viewers or CAD software and manufacturing BOM or ERP systems.
- Experience with engineering changes, revision control, root-cause analysis, and corrective actions.
- Familiarity with CAN bus diagnostics and vehicle diagnostic software.
- Technical training in manufacturing, automotive technology, electrical systems, or a related field.
Work Environment
This is an onsite position based in Riverside, CA and requires being onsite.
Benefits
- Comprehensive benefits package: Medical (including FSA & HSA), dental, vision, life and disability insurance, EAP, mental health, and wellness programs
- 401(k) with employer match
- Paid time off and twelve (12) paid holidays
- Employee referral program
- Career growth and development opportunities
Career Growth at ENC
We believe great careers and leaders are built from within. Many of our team members have advanced into roles that lead or into specialized technical positions. We invest in hands-on training, skill development, and long-term career pathways within manufacturing operations.
Equal Opportunity Employer
ElDorado National California Inc. (ENC) is an equal opportunity employer and considers all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, genetic information, or any other protected class under applicable federal, state, and local laws. We are committed to fostering a diverse and inclusive workplace where all employees feel valued and respected.
ENC takes affirmative action to employ and advance employment opportunities for minorities, women, protected veterans, and individuals with disabilities. We actively encourage qualified candidates from all backgrounds to apply and join our team.
ENC is also committed to ensuring that individuals with disabilities have equal access to opportunities. If you require a reasonable accommodation to complete the application process, please contact HR Department for assistance.
In accordance with California's wage transparency law (Senate Bill 1162), we are committed to pay equity and transparency. The salary range reflected on the job positing is our good faith estimate of what we expect to pay for this role at the time of posting. While we do not typically hire at the top of the salary range, initial offers are based on the candidate’s qualifications and experience, with opportunities for growth and increases over time.
Join a manufacturing leader with over 50 years of excellence, where every role contributes to building reliable transportation solutions that people depend on everyday across the United States and Canada. At ENC, we prioritize safety, quality, innovation, collaboration, and continuous growth - creating vehicles our teams can take pride in.