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.

 


Quality Assurance Inspector

This position is posted at an Intermediate Quality Inspector Level.
Shift: 8:00pm – 8:30pm (subject to change).

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.

ESSENTIAL FUNCTIONS:
· Receiving Inspection
- Perform thorough inspections on all in-coming finished goods, including hardware and processed parts from vendors.
- Verify that all necessary documents are received and in compliance with all requirements of the with purchase order.
· In-Process Inspection
- Perform in-process inspection throughout the manufacturing process from first article to final inspection in a fast paced environment.
- Verify first articles.
- Audit production jobs.
- Initiate SPC when applicable and WIP inspection process.
· Final Inspection
- Ensure that all operations on job traveler have been accomplished and stamped-off.
- Perform dimensional and visual inspection of product in accordance with customer Purchase Order (PO), blueprint, drawing, checklist, part list, etc.
- Generate First Article Inspection Reports (FAIR) and/or Dimensional Inspection Data Reports as applicable.
- Verify required part marking and unit packaging.
- Ensure that all required documentation accompany product shipment.
· Tool Calibration
- Perform inspection tool calibration.
· Technical Support
- Assist manufacturing personnel in resolving any issues pertaining to drawing
and/or specifications for products.
- Educate and train manufacturing personnel on more appropriate inspection methods and techniques whenever necessary.
· Miscellaneous
- Basic computer knowledge and ability to use various types of manufacturing software programs such as JobBoss.
- Perform other duties as required.

SKILLS, KNOWLEDGE, AND EXPERIENCE:
· Minimum of 3-7 years of relevant inspection experience in a plastic and/or metallic machine shop environment is required.
· Experience with ISO9001/AS9100 quality standards and internal audit procedures preferred.
· Confident in reading and understanding mechanical blueprints; cognizant with all the basic fundamental rules.
· Basic shop math skills including ability to perform geometric/trigonometric calculations as well as measurement conversion.
· Ability to use and understand the application and techniques of Geometric Dimensioning and Tolerancing (GD&T).
· Ability to use various types of inspection tools, such as micrometers, calipers, height gages, comparator, optical/probe Coordinate Measurement Machines (CMM), etc.
· Keen attention to detail with strong visual acuity.
· Excellent written and verbal communication skills.
· Ability to interface with all levels of employees and management.

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 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.

For more information about our company, please visit our web page at www.roncelli.com.

To apply for the Quality Assurance Inspector position, please email HR@roncelli.com. You must 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.


CNC Programmer

Essential Functions:

  • Utilize Cam software to develop, edit, revise, and review drawings to create the CNC (CAM) programs for the manufacturing equipment to reflect customer specifications.

  • Convert, program, and implement post-process steps for CNC machining equipment using provided CAD models and drawings.

  • Write and optimize CNC programs to create complex parts on 3-5 axis machining centers and 2 axis lathes with live tooling.

  • Analyze drawings, sketches, and design data of part to determine dimension and configuration of cuts, selection of cutting tools, and machine speeds and feed rates.

  • Determine reference points and direction of machine cutting paths. Computes angular and linear dimensions, radii, and curvatures, and outlines sequence of operations required to machine part.

  • Revise program to eliminate instruction errors or omissions.

  • Observes operation of machine to evaluate programmed instructions when needed.

  • Create set-up sheets and tool/cutter lists to guide correct set-up and operation of machines.

  • Verify availability of special tools and/or cutters with Tool Crib department.

  • Communicate regularly with production employees performing job set-ups in order to optimize programs to improve set-ups, run-time, and efficiency.

  • Coordinate work with other departments such as Quality Assurance, Purchasing, Production Control, etc. to ensure a smooth and timely flow of quality products though the shop.

  • Perform other duties as assigned.

     

    Skills, Knowledge, and Experience:

  • Associate's (AA) degree  or equivalent from two-year college or technical school; or five plus years related experience and/or training  programming in CNC systems using CAD/CAM software such as SurfCam; or equivalent combination of education and experience is required. Previous experience working in a manufacturing environment is a plus.

  • Experience programming with MasterCam version X7 is strongly desired.

  • Demonstrated proficiency with CAD (solid modeling) software such as SolidWorks is required.

  • Familiarity with various types of machines including: Okuma, Haas, and Seiki.

  • Proficient with MS Office (Outlook, Word, Excel) and Internet.

  • Able to read and understand blueprints and technical documents.

  • Strong shop math skills including the ability to perform measurement conversion and the understanding of geometric tolerancing.

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

  • Organization and time-management skills.

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

  • Excellent verbal and written communication skills.

  • Knowledge of computer systems/software such as JobBoss or DocuWare is a plus.

     

    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.

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

  • Lift and/or move objects up to 10 lbs and occasionally up to 15 lbs from one location to another. Assistance is available for lifting objects over 15 lbs.

  • 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 Programmer 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.

“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.”