CNC Machinist

Rancho Santa Margarita, California, United States | Operations | Full-time


CNC Machinist


Shop – 42001 

Reports To:

Production Manager

FLSA Status:

Non-Exempt / Hourly




About IMI

IMI plc, the specialist engineering company, designs, manufactures and services highly engineered products that control the precise movement of fluids. Its innovative technologies, built around valves and actuators, enable vital processes to operate safely, cleanly, efficiently and cost effectively. The Group works with industrial customers across a range of high growth sectors, including energy, transportation and infrastructure, all of which are benefiting from the impact of long-term global trends including climate change, urbanization, resource scarcity and an ageing population. IMI employs some 11,000 people, has manufacturing facilities in more than 20 countries and operates a global service network. IMI currently operates across three globally recognized Divisions: Critical Engineering, Precision Engineering and Hydronic Engineering.

About IMI Critical Engineering

IMI Critical has long been recognized as a world-leader in the provision of flow control solutions. Our products allow vital industries to operate safely, cleanly, reliably and efficiently, so that they can provide us with the energy, resources and materials that underpin modern lives. IMI Critical’s family of specialist companies design, manufacture and service bespoke valves and actuators that precisely control the flow of steam, gas and liquids under extremes of pressure and temperature, as well as intensely abrasive or corrosive operating conditions. Our valves can be found in a myriad of industrial plants and processes around the world, enabling the production of oil and gas, power, petrochemicals, metals, pharmaceuticals, cosmetics, food and beverages, water and sanitation, pulp and paper, ethanol and sugar. Our products are also widely deployed on ships and submarines. Our engineering expertise means that we can make hazardous processes safer, cleaner and greener. By helping clients reduce emissions, improve safety, and make processes more efficient, we have a direct and positive impact on the world. That is why we describe our purpose as ‘breakthrough engineering for a better world’.

IMI Critical Engineering Americas provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.

Position Summary

Sets up and operates CNC machines, such as lathes and mills, to cut, shape, or form metal work pieces to specifications, by performing the duties/responsibilities indicated below.


Supervisory Responsibility

This job has no direct supervisory responsibilities.  


Key responsibilities of this position include (other responsibilities may be assigned):

  • Sets up accurately and operates CNC machines.
  • Works without assistance from supervision
  • Assists employees in job classifications of lesser skill levels.
  • Proves out program and tooling in these areas.
  • Works from prints, sketches, process sheets, layouts, templates written and verbal instructions.
  • Checks CNC programs for errors and edits them in order to improve time and quality of program.
  • Makes own programs when necessary.
  • Consults programmer to establish sequence of operation and product program readout when required.
  • Measures and adjusts machine parts.
  • Adjusts machine feed and speed and changes cutters to machine parts according to specifications when automatic programming is faulty or machine malfunctions.
  • Trouble shoots and interprets malfunctions and makes corrections.
  • May assist others in repair of own machines or equipment.
  • Detects and reports machine problems and faulty material.
  • Checks traveler and blueprints for errors or special instructions.
  • Makes layouts and sketches as required
  • Uses precision measuring equipment to check accuracy and quality of product.
  • Selects and sets up best available tooling to run job efficiently. Checks for accuracy, grade, style.
  • Locates, adjusts and secures tools and tool holders, grinds tools, mounts work holding fixtures, and adjusts index table to follow programming instructions.
  • Uses hoists and cranes to move parts around work center and loads and unloads machine.
  • Adds coolants and lubricants when necessary and changes or assists in changing coolant supply.
  • Keeps work area, machinery and equipment clean and orderly.
  • Keeps necessary records.
  • Receives instructions from salaried personnel or designee.
  • Complies with all company and safety rules, regulations and practices.

Qualifications and Required Skills:

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

  • 5 to 7 years of experience in a related field and/or training preferred; or equivalent combination of education and experience.
  • High School diploma, GED, or equivalent strongly preferred
  • Ability to set up and run CNC machines in time allocated.
  • Knowledge of CNC controls and programming skills.
  • Knowledge of tooling, including best grades to use for different materials and jobs, cutting, speeds and feeds, drilling, threading, and machine capabilities.
  • Ability to read blueprints, traveler, and measuring micrometer.
  • Ability to make set ups strong and safe enough to run at optimum speeds and depths of cut.
  • Able to trouble shoot and edit programs to safely increase metal removal rate and decrease in cycle time.
  • Ability to use precision measuring instruments to check parts.
  • Ability to improve quality by inspecting parts and make sure that part is to print.
  • Must be able to gain self-inspection stamp within a six-month period of time by machining a high quality product.
  • Must be able to use large wrenches to tighten fixtures.
  • Must be able to manipulate large castings in place for machining.
  • Must have own tools, such as, hammers, wrenches, pliers, etc.
  • Must be available to work overtime when required for priority shipments.

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 is regularly required to sit; use hands to finger, handle, or feel; and talk or hear.  The employee is occasionally required to stand; walk; reach with hands and arms; climb or balance; and stoop, kneel, crouch, or crawl.  The employee must occasionally lift and/or move up to 50 pounds.
  • Specific vision abilities required by this job include close vision, and ability to adjust focus

What We Offer

  • Multiple health plans to choose from: HMO, PPO, and High Deductible Health Plans with a low-cost share
  • Best-in-class 401K plan with zero vesting and up to 6% contribution matching
  • 14-week maternity leave at full pay following one year of service (Adoption benefits are equivalent)
  • 4-week paternity leave at full pay following one year of service (Adoption benefits are equivalent)
  • Employee Resource Groups that offer community and support, like our Pride Network and Network of Women groups 
  • Vacation/Sick time, encompassing inclusive holidays 
  • Career Development opportunities (IMI’s ‘Catalyst’ Program)
  • Employer contribution for Health Savings Account, and in many cases free virtual telemedicine, and teletherapy.
  • Mental Health and wellness programs to support you and your family
  • Full suite of voluntary benefits to tap into, including but not limited to: Critical illness insurance, hospital indemnity, legal insurance, identity theft protection, and pet insurance or home & auto insurance through our discount advantage platform
  • Short & long-term disability as well as basic life insurance at 2x your basic salary at no cost to the employee
  • Free financial advisors, webinars, and classes through Charles Schwab
  • Annual Employee Stock Purchase Plan with option to purchase IMI shares at a reduced employee only price - no opportunity to lose, only to profit or refund your investment 100%

Work Environment:

The work environment characteristics described here are representative of those an employee encounters while performing 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 is frequently exposed to moving mechanical parts; occasionally exposed to wet and/or humid conditions; high, precarious places; fumes or airborne particles; toxic or caustic chemicals; outside weather conditions; and risk of electrical shock when in the shop area to inspect valves.
  • The noise level in the work environment is usually moderate (office/cubicle environment with computers, fax machines and printers operating) to loud (manufacturing environment with large machinery operating)