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Machine Shop Assistant Jobs in Rancho Cucamonga, CA

Flex

Shop Helper (2nd Shift)

Fontana, CA

$17.61 - $23.77/hr

Report to the Production Manager, Shop Helper, responsible for assisting with prepping, grinding ... This individual will also assist machine operators and welders with assigned tasks to complete the ...

Flex Ltd

Shop Helper (2nd Shift)

Fontana, CA · On-site

$17.61 - $23.77/hr

Report to the Production Manager, Shop Helper, responsible for assisting with prepping, grinding ... This individual will also assist machine operators and welders with assigned tasks to complete the ...

Flex Ltd

Shop Helper (2nd Shift)

Fontana, CA

$17.61 - $23.77/hr

Report to the Production Manager, Shop Helper, responsible for assisting with prepping, grinding ... This individual will also assist machine operators and welders with assigned tasks to complete the ...

HR Direct Services

Be Seen First

Machine Maintenance Tech

Ontario, CA · On-site

$36 - $39/hr

... * Assist with machine installations, relocations, rebuilds, and upgrades. Facility & Equipment ... machine shop environment. * Strong experience maintaining and repairing CNC mills and lathes.

Ducommun

General Helper 1st Shift Temp to Hire

Orange, CA · On-site

$18 - $20/hr

General Helper Assist shop personnel with a variety of support tasks that are based on department ... Lifts metal part or stock onto machine and secures it on machine table, in chuck, or holding ...

KD Precision Machining Inc

CNC Lathe Machinist

Corona, CA · On-site

$25 - $30/hr

... Assist in other work areas and perform all other related duties, as needed and directed. * *The ... Company Description CNC Milling & Turning Machine Shop specializing in the Aerospace Industry.

KD Precision Machining Inc

CNC Lathe Machinist

Corona, CA · On-site

$25 - $30/hr

... Assist in other work areas and perform all other related duties, as needed and directed. * *The ... Company Description CNC Milling & Turning Machine Shop specializing in the Aerospace Industry.

Integr8staff

Tool & Die Maker

Brea, CA · On-site

$38 - $39/hr

Perform preventive maintenance on tooling and machine shop equipment. Troubleshoot mechanical ... Use precision measuring tools to verify final dimensions are within acceptable tolerances. Assist ...

Kirkhill Inc.

Tool & Die Technician Intern

Brea, CA · On-site

$21.25 - $23.25/hr

Essential Duties and Responsibilities * Assist technicians in repairing and maintaining tooling, dies, jigs, fixtures, and machine shop equipment. * Participate in preventive maintenance tasks for ...

Kirkhill

Tool & Die Technician Intern

Brea, CA

Essential Duties and Responsibilities * Assist technicians in repairing and maintaining tooling, dies, jigs, fixtures, and machine shop equipment. * Participate in preventive maintenance tasks for ...

Kirkhill Inc.

Tool & Die Technician Intern

Brea, CA · On-site

$23/hr

Essential Duties and Responsibilities * Assist technicians in repairing and maintaining tooling, dies, jigs, fixtures, and machine shop equipment. * Participate in preventive maintenance tasks for ...

Kirkhill Inc.

Tool & Die Technician Intern

Brea, CA · On-site

$23/hr

Under close supervision, the intern will gain hands‑on experience with machine shop equipment ... Assist with die setups or changeovers by observing and performing basic tasks.Maintain clean ...

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All JobsMachine Shop JobsMachine Shop Assistant JobsMachine Shop Assistant Jobs in Rancho Cucamonga, CA

Machine Shop Assistant information

See Rancho Cucamonga, CA salary details

$13

$18

$23

How much do machine shop assistant jobs pay per hour?

As of Aug 22, 2026, the average hourly pay for machine shop assistant in Rancho Cucamonga, CA is $18.45, according to ZipRecruiter salary data. Most workers in this role earn between $16.68 and $19.66 per hour, depending on experience, location, and employer.

What are the main duties of a machine shop assistant?

A Machine Shop Assistant supports machinists and technicians by preparing materials, operating basic machinery, cleaning and maintaining equipment, and organizing the workspace. They often assist with loading and unloading materials, measuring parts, and ensuring that tools and machines are in good working order. These assistants play a vital role in keeping the shop running smoothly and efficiently, often performing routine tasks so skilled machinists can focus on more complex work.

What are the key skills and qualifications needed to thrive as a machine shop assistant?

To thrive as a Machine Shop Assistant, you need a basic understanding of machining processes, mechanical aptitude, and often a high school diploma or equivalent. Familiarity with hand tools, measuring instruments like calipers and micrometers, and sometimes CNC machinery or safety certifications is typical. Attention to detail, reliability, and strong teamwork skills help you excel in supporting machinists and maintaining workflow. These skills and qualities ensure safe, efficient operations and contribute to producing high-quality machined parts.

What are some common challenges faced by a machine shop assistant, and how can they be managed effectively?

Machine Shop Assistants often face challenges such as maintaining strict safety protocols while working around heavy machinery, managing multiple tasks like material handling and equipment cleaning, and adapting to varying production schedules. Effective time management and consistent communication with machinists and supervisors can help address these challenges. Additionally, staying organized and proactive in identifying potential hazards contributes to a safer and more efficient workplace.

What is the difference between Machine Shop Assistant vs Machinist?

AspectMachine Shop AssistantMachinist
CredentialsHigh school diploma or equivalent; some technical trainingTechnical training or apprenticeship; certifications may be preferred
Work EnvironmentAssists in machine setup, cleaning, and material handling in machine shopsOperates and programs machines like lathes and mills in manufacturing settings
Job ResponsibilitiesSupports machinists, prepares materials, maintains equipmentSets up, operates, and monitors machining equipment to produce parts

While both roles work in machine shops, the Machine Shop Assistant primarily supports machinists by handling preparatory and maintenance tasks, whereas the Machinist directly operates and programs machines to produce precise parts. The assistant role often requires less technical training, making it an entry point into the industry.

What qualifications do you need to work in a machine shop assistant?

A machine shop assistant typically needs a high school diploma or equivalent and basic mechanical skills. Experience with hand tools, knowledge of safety procedures, and the ability to read technical drawings are also important qualifications for the role.

What are the most commonly searched types of Machine Shop jobs in Rancho Cucamonga, CA?

The most popular types of Machine Shop jobs in Rancho Cucamonga, CA are:

What cities near Rancho Cucamonga, CA are hiring for Machine Shop Assistant jobs?

Cities near Rancho Cucamonga, CA with the most Machine Shop Assistant job openings:

Machine Shop Assistant jobs near you
Infographic showing various Machine Shop Assistant job openings in Rancho Cucamonga, CA as of August 2026, with employment types broken down into 91% Full Time, 3% Temporary, 3% Contract, and 3% Nights. Highlights an 100% In-person job distribution, with an average salary of $38,373 per year, or $18.4 per hour.

Machine Shop Operator - 2nd Shift

Partners Personnel

City Of Industry, CA • On-site

$24/hr

Full-time

Medical, Dental, Vision, PTO

This job post has expired today. Applications are no longer accepted.

Job description

MACHINE SHOP HELPER

Location: City of Industry, CA
Pay Rate: $24.00/hr
Schedule: 2nd Shift | Monday–Saturday

Job Summary

We are seeking a Machine Shop Helper to support daily operations in a fast-paced manufacturing environment. This position is ideal for someone with basic machine shop experience who is interested in developing their skills while assisting machinists with mills, lathes, and other machine shop equipment.

The Machine Shop Helper will assist with machine setup, material handling, basic troubleshooting, measurements, and general shop duties while maintaining a safe and organized work environment.

Essential Duties & Responsibilities

  • Assist machinists with the operation and setup of mills, lathes, and other machining equipment.
  • Help troubleshoot basic machine issues and identify potential equipment problems.
  • Assist with loading and unloading materials and parts from machines.
  • Provide support with machine setups, tooling, fixtures, and workholding.
  • Use basic measuring tools such as calipers, micrometers, and gauges.
  • Read and understand basic blueprints, work instructions, and shop drawings.
  • Assist with deburring, cleaning, grinding, and finishing machined parts.
  • Perform basic inspection of parts to ensure they meet specifications.
  • Maintain a clean, organized, and safe work area.
  • Move materials, tooling, and finished parts throughout the machine shop.
  • Assist machinists with tooling changes and other production-related tasks.
  • Follow all safety procedures and company policies.
  • Perform other duties as assigned.

Qualifications

  • Previous machine shop, manufacturing, or mechanical experience preferred.
  • Basic knowledge of mills, lathes, and machining processes preferred.
  • Ability to troubleshoot or assist in identifying basic machine problems.
  • Familiarity with hand tools and measuring instruments.
  • Ability to read basic blueprints or technical drawings.
  • Strong mechanical aptitude and willingness to learn.
  • Ability to work independently and as part of a team.
  • Must be comfortable working in a manufacturing/machine shop environment.
  • Ability to lift and move materials as required.

Preferred Experience

  • CNC machine shop experience.
  • Manual mill or lathe experience.
  • Machine setup or tooling experience.
  • Experience using calipers, micrometers, and other precision measuring tools.
  • Mechanical assembly or tool-and-die experience.

Physical Requirements

  • Ability to stand and walk for extended periods.
  • Ability to frequently bend, reach, push, pull, and lift.
  • Ability to safely handle materials and parts weighing up to 50+ lbs.
  • Must be comfortable working around operating machinery, tools, and industrial equipment.

This is a great opportunity for someone with mechanical aptitude who wants to grow their skills and build a career in machining and manufacturing.

Partners Personnel logo

About Partners Personnel

Sourced by ZipRecruiter

Partners Personnel is a full-service staffing company with offices nationwide dedicated to finding the best talent for our clients and building great careers for our employees. At Partners Personnel, we are fanatics when it comes to client satisfaction! Our business model enables companies to maximize profitability by providing flexible staffing regardless of size. We carefully assess every candidate’s personality, skill set, and work experience to ensure we find the right fit for each assignment, allowing our clients to focus on running their business with the best talent available for the job. Partners Personnel has experienced rapid growth since its founding in 2017 to become the 12th largest industrial staffing firm in the U.S. while expanding to over 100 branches nationwide. The strength of its culture as an SIA Best Staffing Firm to Work For and the focused purpose of “helping people and organizations improve” has fueled this rapid growth. In addition to its core strength in the light industrial space, Partners has leveraged its capabilities, successful business model, and industry know-how to add Specialty Divisions to serve its growing customer and employee base further while continuing to provide exceptional service and a more personalized approach to staffing.

Industry

Recruiting and staffing services

Company size

1,001 - 5,000 Employees

Headquarters location

Santa Barbara, CA, US

Year founded

2017

Social media

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