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Machine Operator

Sierra Proto Express
Sunnyvale, CA Full Time
POSTED ON 10/24/2025 CLOSED ON 12/23/2025

What are the responsibilities and job description for the Machine Operator position at Sierra Proto Express?

SUMMARY OF JOB FUNCTION:

The AOI Operator - Trainee is responsible for properly inspecting printed circuit boards for defects and performing rework when appropriate.

KEY RESPONSIBILITIES:

AOI Machine Operator

  • Perform inspections on inner-layer and outer-layer image for peeling, openings, shorts, etc. before and after the plating process.
  • Perform reworks such as weld openings and clean shorts when appropriate.
  • Check the trace width and space to ensure that customer requirements are met.
  • Check the resist to confirm the different types and the registration for any shifting.
  • Compare and verify data files with CAM files before transferring data to machine.
  • Perform weekly maintenance on machines and perform house keeping duties to maintain a clean and safe work environment.
  • Inform Managers of any potential problems.
  • Interact professionally and diplomatically with managers, co-workers, and vendors.
  • Be punctual and maintain good attendance.
  • Other duties as assigned.

QUALIFICATIONS - KNOWLEDGE/SKILLS- EXPERIENCE:

  • Excellent oral and written communication skills.
  • Exceptional multi-tasking, organizational skills, strong attention to detail and accuracy.
  • Strong interpersonal skills and ability to work with all levels of management
  • Self-motivator and a sense of ownership and urgency.
  • Must be able to maintain confidentiality & professionalism at all times.
  • Proficient in Microsoft Office using Excel, PowerPoint, and Word required.
  • High School Diploma preferred.
  • 2-4 years’ experience in AOI for PCB Manufacturing Company.
  • Previous experience with Orbotech or CAMTech.
  • Prior knowledge of performing reworks on printed circuits boards.
  • Ability to read and understand technical work instructions.
  • Ability to follow procedures and maintain quality of products at all time.
  • Good computer skills and the ability to learn new skills and tasks as required, especially PCB software (ProCim).
  • Ability to occasionally lift up to 25 pounds and stand/walk throughout the day.
  • Ability to perform at the highest level in a fast-paced environment.

SUPERVISES: None

California Salary Range: $20- $24 per hour and benefit perks

Salary : $20 - $24

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