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Machinist Assistant Jobs in Rialto, CA (NOW HIRING)

May assist in onboarding and cross-training of setup and operator personnel Work Setting * Shop floor machining environment * Assigned to Swiss-style CNC lathes (e.g., Citizen, Star, Tsugami) * Daily ...

CNC Programmer/Machinist

Grand Terrace, CA · On-site

$26.25 - $35.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Occasionally works with the toolmakers to assist in new/ special project development. * Set up and operate machines to create parts that conform to engineered blueprint specifications * Inspect parts ...

CNC Knife Operator

Anaheim, CA · On-site

$21 - $23/hr

Responsible for running the CNC machine * Set up and operate Gerber. * Following detailed ... Able to prioritize multiple assignments * Assist as required throughout the facility when needed

CNC Knife Operator

Anaheim, CA

$21.50 - $29.25/hr

Responsible for running the CNC machine * Set up and operate Gerber. * Following detailed ... Able to prioritize multiple assignments * Assist as required throughout the facility when needed

CNC Operator I

Walnut, CA · On-site

$21.30/hr

... machine maintenance and keep your work area clean Document production activity and maintain accurate counts Support continuous improvement and assist teammates when needed Requirements Ability to ...

Showing results 21-40

Machinist Assistant information

See Rialto, CA salary details

$12

$23

$31

How much do machinist assistant jobs pay per hour?

As of Aug 18, 2026, the average hourly pay for machinist assistant in Rialto, CA is $23.24, according to ZipRecruiter salary data. Most workers in this role earn between $19.28 and $25.53 per hour, depending on experience, location, and employer.

What is a machinist assistant?

A Machinist Assistant supports machinists by preparing materials, maintaining tools, and operating basic machinery. They help with measuring, cutting, and finishing components while ensuring workplace safety and cleanliness. This role is essential for efficient machine shop operations and provides hands-on experience for those looking to advance in machining or manufacturing.

What are the typical day-to-day responsibilities of a machinist assistant?

As a Machinist Assistant, your daily tasks may include preparing materials, loading and unloading machines, performing basic maintenance or cleaning, and assisting machinists with setting up equipment. You'll often be responsible for measuring and inspecting parts, maintaining organization in the work area, and ensuring tools are properly stored. This role is very hands-on, requiring you to work closely with machinists, engineers, and sometimes production supervisors. Being proactive and detail-oriented will help you support the team efficiently and contribute to successful project outcomes.

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

To thrive as a Machinist Assistant, you need a solid understanding of basic machining principles, mechanical aptitude, and a high school diploma or equivalent. Familiarity with machine tools such as lathes and mills, as well as measurement instruments like calipers and micrometers, is often expected, and OSHA safety certifications may be beneficial. Attention to detail, reliability, good communication, and the ability to follow instructions are crucial soft skills in this role. These skills ensure safe, efficient support for machinists, help maintain production quality, and foster a collaborative work environment.

What is the starting pay for a machinist assistant?

The starting pay for a machinist assistant typically ranges from $12 to $18 per hour, depending on experience, location, and the employer. Entry-level positions may also include on-the-job training and opportunities to learn skills such as operating lathes and milling machines.

What are the most commonly searched types of Machinist jobs in Rialto, CA?

The most popular types of Machinist jobs in Rialto, CA are:

What are popular job titles related to Machinist Assistant jobs in Rialto, CA?

For Machinist Assistant jobs in Rialto, CA, the most frequently searched job titles are:

What job categories do people searching Machinist Assistant jobs in Rialto, CA look for?

The top searched job categories for Machinist Assistant jobs in Rialto, CA are:

What cities near Rialto, CA are hiring for Machinist Assistant jobs?

Cities near Rialto, CA with the most Machinist Assistant job openings:

Infographic showing various Machinist Assistant job openings in Rialto, CA as of August 2026, with employment types broken down into 1% As Needed, 76% Full Time, 20% Part Time, 1% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution, with an average salary of $48,334 per year, or $23.2 per hour.

Machinist II - 5-6 Axis Machines-Walnut,California

Align Percision

Walnut, CA

$21.25 - $29/hr

Full-time

Re-posted 9 days ago


Job description

Position Summary: Manufactures detailed parts and tools from blueprints, sketches, drawings, or verbal instructions using various computer- or mechanically controlled machine tools and equipment. Sets up and operates mills, computer-controlled equipment (CNC) machine tools, and other machining equipment using mathematical and geometrical calculations. Uses precision measuring instruments to check and maintain tolerances. Calculates dimensions using measuring instruments. Installs, aligns, secures, and adjusts cutting tools and work pieces. Monitors the feed and speed of machines. Measures and examines completed products for defects. May also perform complex and varied machining operations in prototype experimental activities. Sets up low-complexity, unproven parts. May also set up proven parts with medium to high complexity.
Essential Duties and Responsibilities include, but are not limited to:
• Set up, operate, and maintain CNC milling and turning centers according to complex blueprints and specifications.
• Retrieve job related information (job routings, part drawing, tool lists, work- instructions, etc.)
• Select and utilize appropriate cutting tools and work holding for various materials and machining processes.
• Document manufactured quantities and all required processes utilizing ERP system
• Perform precise measurements and inspections to ensure parts meet stringent quality control standards.
• Participate in continuous improvement initiatives to optimize machining efficiency.
• Maintain a clean and safe work environment, adhering to all safety protocols.
• May assist with developing new machining methods and tooling for complex parts.
• Other duties assigned.
Qualifications:
Experience and Education:
5-6 years of relevant experience
High school degree or equivalent, plus advanced training
Technical Skills:
Must have experience with 5-6 axis machines
Experience with multi-spindle machines a plus
Excellent attention to detail
Working knowledge of customer specifications and requirements
Basic computer skills
Problem solving abilities
Ability to use calipers, micrometers, etc.
Mastery of basic math (addition, subtraction, multiplication, division, and fractions)
Strong teamwork and communication skills to get along with co-workers and be a team player
Understand and obey safety requirements
Commitment to keep work area clean and free of debris
Physical Requirements:
Must be able to lift and/or move up to 50lbs
Specific vision abilities include close and distance vision, depth perception and ability to adjust focus
Ability to use hands to finger, handle, or feel, as well as reach with hands and arms for extended periods of time
Capable of standing for long periods
Supervisory Responsibilities: None.
Travel Required: N/A
Note: This job description in no way states or implies that these are the only duties to be performed by the employee(s) of this position. Employees will be required to follow any other job-related instructions and to perform any other job-related duties requested by any person authorized to give instructions or assignments. All duties and responsibilities are essential functions and requirements and are subject to possible modification to reasonably accommodate individuals with disabilities.
To perform this job successfully, the employee(s) will possess the skills, aptitude, and abilities to perform each duty proficiently. Some requirements may exclude individuals who pose a direct threat or significant risk to the health or safety to themselves or others. The requirements listed in this document are the minimum levels of knowledge, skills, or abilities. This document does not create an employment contract, implied or otherwise, other than an at will relationship.
Affirmative Action/Employment Opportunity (EEO) Statement: ALIGN PRECISION is an equal opportunity employer and values diversity at our company. We are committed to creating a workplace where all qualified individuals are welcome and can thrive, regardless of race, religion, color, national origin, gender, sexual orientation, gender identity, age, marital status, veteran status, disability status, or any other characteristics protected by law.