Join Our Team!

ABOUT OUR COMPANY:
Located in Monrovia CA, Roncelli Plastics was founded in 1969. We specialize in plastic and non-metallic machining and fabrication, and are one of the leading non-metallics fabricators in the United States. Our highly experienced staff of machinists, quality personnel, and supervisors are dedicated to delivering the best quality plastic and non-metallic components in the industry. Finished components are delivered to some the largest and most well-known companies in the world including Boeing, Raytheon, Honeywell, Northrop Grumman, Lockheed Martin, NASA, and hundreds of other companies.

We offer a competitive salary, a clean work environment, two shifts, an excellent benefits package including paid time off, medical/dental/vision/life insurance, as well as an employer matched 401k plan. Great opportunity to work in a family owned/oriented business.

Roncelli Plastics Inc. is always looking for talented new people to join our team. If you have any questions, or need assistance to apply to a posted position, you can email hr@roncelli.com or call 626.359.2551.


CNC Mill and/or Lathe Machinist

These positions are posted at an Intermediate and/or Advanced CNC Mill and/or Lathe Machinist Level. Swing or Day Shift. See Specific Position Requirements Below.

ESSENTIAL FUNCTIONS:

    • Perform Most CNC Mill and/or Lathe Set-Up’s and Operate CNC Mill and/or Lathe Machines According to Process Sheets Under General Supervision (Intermediate Level). Perform CNC Mill and/or Lathe Set-Up’s and Operate CNC Mill and/or Lathe Machines According to Process Sheets With No Supervision or Assistance (Advanced Level).

    • Create (Advanced Level), Edit, Send, or Retrieve CNC Programs From Systems Files as Required For Mill and/or Lathe Machine Set-up and Operation.

    • Read and Interpret Manufacturing Paperwork (Travelers, Blueprints, Sketches, Etc.) in Order to Produce Products as Required by Customer Specifications and Quality Standards.

    • Inspect and Verify Own Work Prior to Submitting to Quality Department For First Article Inspection.

    • Meet Needed Quote Times and Schedule for Assigned Work.

    • Correctly Process Required Work-Related Paperwork and Material Requirements Planning (MRP) Documents.

    • Communicate Regularly With Supervisors and Other Employees Regarding any Production Issues and Ways to Eliminate Possible Errors on Set-up and/or Programming.    

    • Perform Non-CNC Tasks When Necessary, such as Hand-Work Operations.

    • Evaluate and Update “Estimated to Actual” Cycle Times.

    • Conduct All Shop Functions in a Safe Manner.

    • Perform Other Duties as Required.

SKILLS, KNOWLEDGE, AND EXPERIENCE:

  • Minimum of 3-5 Years of Relevant CNC Mill and/or Lathe Machine Experience is Required (Intermediate Level). Minimum of 5 Years of Relevant CNC Mill and/or Lathe Machine Experience is Required (Advanced Level). Certificate from NTMA or Other Technical School is a Plus.

  • Firm Understanding of Mill and/or Lathe Programs Including Formatting and Editing Programs.

  • Ability to Read and Understand Blueprints and Technical Documents.

  • Ability to Use Various Inspection Tools Such as Micrometers, Calipers, Height Gages, and Comparators.

  • Familiarity with Coordinate Measurement Machines (CMM) is desired (Advanced Level).

  • Strong Shop Math Skills Including the Ability to Perform Measurement Conversion.

  • A Genuine Belief in Continuous Improvement and a Disciplined Process.

  • Organization and Time-Management Skills.

  • Excellent Verbal and Written Communication Skills.

Basic Computer Knowledge and Ability to Use Various Types of Manufacturing Software Programs such as JobBoss.

 

PHYSICAL DEMANDS:

While performing the essential functions of the job, the employee is regularly required to engage in the activities listed below. Reasonable accommodations will be made to enable individuals with disabilities to perform the essential functions.

 

  • Walk and/or Move about the Workplace.

  • Stand and/or Sit for Prolonged Periods of Time.

  • Bend at Waist and/or Knees.

  • Lift and/or Move Objects up to 25lbs and Occasionally up to 50lbs From One Location to Another. Assistance is Available for Lifting Objects Over 25lbs.

  • Move Arms, Wrists, Hands, and/or Fingers in Repetitive Motions including Keyboarding.    

  • Feel and Perceive the Attributes of an Object, such as its Size, Shape, Color, Distance, Weight, and/or Texture.

  • Express, Perceive, and Exchange Thoughts, Questions, and Instructions, Through Both Written and Oral Communication in the English Language.

 

 

Roncelli Plastics Inc. is an Equal Opportunity Employer.

 

To apply for either intermediate or advanced level Mill and/or Lathe Machinist positions, please email HR@roncelli.com. To apply for either the, please put the job title of the position you are applying to in the subject line of your email and attach your resume in word or pdf format. If you require assistance to apply to this position, please contact our Human Resources department at 626-359-2551.

 

Entry Level CNC Mill and/or Lathe Machinist

This position is available for an Entry Level CNC Mill and/or Lathe Machinist. See specific position requirements below.

ESSENTIAL FUNCTIONS:

  • Operate CNC Mill/Lathe Machines According to Process Sheets Under Direct Supervision.

    • Read and Interpret Manufacturing Paperwork (Travelers, Blueprints, Sketches, Etc.) in Order to Produce Products as Required by Customer Specifications and Quality Standards.

    • Inspect and Verify Own Work Prior to Submitting to Quality Department For First Article Inspection.

    • If Part is Non-Conforming, Use Non-Conforming Material Procedure.

  • Meet Needed Quote Times and Schedule for Assigned Work.

  • Correctly Process Required Work-Related Paperwork and Material Requirements Planning (MRP) Documents.

  • Communicate Regularly With Supervisors and Other Employees Regarding any Production Issues.

    • Perform Non-CNC Tasks When Necessary, Such as Hand-Work Operations.

    • Evaluate and Update “Estimated to Actual” Cycle Times.

  • Challenge Processes if Needed to Create a More Efficient Production Environment.

  • Conduct All Shop Functions in a Safe Manner.

  • Consistently Improve the Organization and Cleanliness of Assigned Areas (5s).

  • Perform Other Duties as Required.

     

    SKILLS, KNOWLEDGE, AND EXPERIENCE:

  • Minimum of 0-2 Years of Relevant CNC Mill/Lathe Machining Experience is Required. Certificate from NTMA or Other Technical School is a Plus.

  • Ability to Read and Understand Blueprints and Technical Documents.

  • Ability to Use Various Inspection Tools Such as Micrometers, Calipers, Height Gages, and Comparators.

  • Strong Shop Math Skills Including the Ability to Perform Measurement Conversion.

  • A Genuine Belief in Continuous Improvement and a Disciplined Process.

  • Organizational and Time Management Skills.

  • Self Starter with Ability to Multi-Task and Prioritize Daily Work Assignments.

  • Excellent Written and Verbal Communication Skills.

  • Basic Computer Knowledge and Ability to Use Various Types of Manufacturing Software Programs such as JobBoss.

     

    PHYSICAL DEMANDS:

    While performing the essential functions of the job, the employee is regularly required to engage in the activities listed below. Reasonable accommodations will be made to enable individuals with disabilities to perform the essential functions.

     

  • Walk and/or Move about the Workplace.

  • Stand and/or Sit for Prolonged Periods of Time.

  • Bend at Waist and/or Knees.

  • Lift and/or Move Objects up to 25lbs and Occasionally up to 50lbs From One Location to Another. Assistance is Available for Lifting Objects Over 25lbs.

  • Move Arms, Wrists, Hands, and/or Fingers in Repetitive Motions including Keyboarding.    

  • Feel and Perceive the Attributes of an Object, such as its Size, Shape, Color, Distance, Weight, and/or Texture.

  • Express, Perceive, and Exchange Thoughts, Questions, and Instructions, Through Both Written and Oral Communication in the English Language.

 

 

Roncelli Plastics Inc. is an Equal Opportunity Employer.

 

 

To apply for the Entry Level Mill and/or Lathe Machinist position, please email HR@roncelli.com. When applying, please put the exact job title of the position you are applying for in the subject line of your email and attach your resume in word or pdf format. If you require assistance to apply to this position, please contact our Human Resources department at 626-359-2551.

 

Tool Pre-Setter

ESSENTIAL FUNCTIONS:

  • Operate computerized tool pre-setting and inspection machine to determine tool length offsets on Z-Axis.

  • Inspect and measure tools and equipment for defects and wear either visually or using micrometers or pre-setter; report damage to Supervisor.

  • Assemble and disassemble cutting tools and place into tool holders.

  • Pre-set tools and measure for milling and turning applications; prepare tools, cutters, endmills, drills, etc. for pending machining work centers.

  • ID tools and equipment using ID tag or electronic marking tool.

  • Follow work sequence dispatch report and communicate effectively with Production Control department and other production employees to ensure pre-sets are prepared in a timely manner for each job in order to prevent unnecessary machine down time.

  • Maintain a clean and organized working area, ensuring safety standards at all times.

  • Perform other duties as assigned.

     

    SKILLS, KNOWLEDGE, AND EXPERIENCE:

  • Minimum of 0-2 years of relevant CNC lathe and/or mill machining experience is a preferred. Certificate from NTMA or other technical school is a plus.

  • Previous experience working and/or tool pre-setting in a machine shop environment is a plus.

  • Strong shop math skills including the ability to perform measurement conversion.

  • Ability to use various measuring instruments such as micrometers, calipers, and other hand tools.

  • Strong attention to detail with exceptional organizational skills.

  • Self-starter with the ability to multi-task and prioritize daily work assignments.

  • Excellent written and verbal communication skills.

  • A genuine belief in continuous improvement and a disciplined process.

     

    PHYSICAL DEMANDS:

    While performing the essential functions of the job, the employee is regularly required to engage in the activities listed below. Reasonable accommodations will be made to enable individuals with disabilities to perform the essential functions.

     

  • Walk and/or move about the workplace.

  • Stand and/or sit for prolonged periods of time.

  • Bend at waist and/or knees.

  • Lift and/or move objects up to 10lbs and occasionally up to 25lbs from one location to another. Assistance is available for lifting objects over 25lbs.

  • Move arms, wrists, hands, and/or fingers in repetitive motions.  

  • Feel and perceive the attributes of an object, such as its size, shape, color, distance, weight, and/or texture.

  • Express, perceive, and exchange thoughts, questions, and instructions, through both written and oral communication in the English language.

 

 

Roncelli Plastics Inc. is an Equal Opportunity Employer.

 

 

To apply for the Tool Pre-Setter position, please email HR@roncelli.com. When applying, please put the job title of the position you are applying for in the subject line of your email and attach your resume in word or pdf format. If you require assistance to apply to this position, please contact our Human Resources department at 626-359-2551.

 

“Roncelli Plastics is an equal opportunity employer and makes employment decisions and provides employment opportunities on the basis of merit, qualifications, potential and competency. We want to have the best available persons in every job. Company policy prohibits unlawful discrimination based on race, religion, (all aspects of religious belief, observances, and practices including religious dress and grooming practices), color, national origin, ancestry, sex, (including pregnancy, childbirth, breastfeeding or related medical conditions) gender, gender identity, gender expression, sexual orientation, marital status, age, physical or mental disability, genetic information, or medical condition, except where physical fitness is a valid occupational qualification or any other consideration made unlawful by federal, state or local laws. This commitment applies to all persons involved in the operations of the Company and prohibits unlawful discrimination by any employee of the Company, including supervisors and co-workers. All such discrimination is unlawful.”