Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Mill Machinist

Roncelli Plastics

Job Description

Job Description

Position Summary: Working under the general supervision of the department Lead, setup repeat jobs, and operates the Computer Numerical Control (CNC) 3 axis mill machines to fabricate plastic and non-metallic parts according to strict customer and quality specifications.

  This position will utilize confidential information, Confidentiality Agreement is strictly enforced.

Essential Functions:

·         Perform CNC mill new and repeat set-ups and operate CNC mill 3 axis machines according to process sheets with minimal supervision or assistance.

·         Edit, send, or retrieve CNC programs from systems files as required for mill 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 Assurance 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 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.

·         Make process decisions and utilize the help chain/chain of command when necessary.

·         Challenge processes if needed to create a more efficient production environment.

·         Focus on set-up and run time reduction.

·         Conduct all shop functions in a safe manner.

·         Consistently improve the organization and cleanliness of assigned areas (5’s).

·         Perform other duties as required.

Skills, Knowledge, and Experience:

·         Minimum of 3 years of relevant CNC mill machine experience. Certificate from NTMA or other technical school is a plus.

·         Ability to understand CNC mill programs including formatting and editing programs.

·         Ability to use various inspection tools such as micrometers, calipers, height gages, and comparators.

·         Ability to read and understand blueprints and technical documents.

·         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.

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

·         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 50 lbs 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.

Work Environment:

·         Machine shop environment with exposure to large machinery/equipment.

·         Clean and well-ventilated production areas.

·         Machinery operation requires the use of personal safety equipment to include, but not limited to, safety glasses.

·         Noise levels are moderate.

Company Description

Roncelli Plastics, an industry pioneer since 1969, as a thermoplastics and composites manufacturer headquartered in Monrovia, California. We fabricate critical parts for Commercial Space and Aerospace, Medical and Life Science, Semiconductor and Oil and Gas. Trusted by the world’s most notable brands for our leading edge technology, innovative operations, technical expertise and knowledgeable partnership.

Company Description

Roncelli Plastics, an industry pioneer since 1969, as a thermoplastics and composites manufacturer headquartered in Monrovia, California. We fabricate critical parts for Commercial Space and Aerospace, Medical and Life Science, Semiconductor and Oil and Gas. Trusted by the world’s most notable brands for our leading edge technology, innovative operations, technical expertise and knowledgeable partnership.

Vacancy posted 16 days ago
Similar jobs that could be interesting for youBased on the Mill Machinist in Monrovia, CA vacancy
  • $32 - $36 per hour

    Job Description Manual Mill & Lathe Machinist - Aerospace Manufacturing Full-Time | Monday-Friday, 6:00 AM-2:30 PM We urgently need a skilled Manual Mill & Lathe Machinist to support high-precision aerospace production. This role requires someone who can hit the ground... 
    Suggested
    Hourly pay
    Full time
    Local area
    Immediate start
    Monday to Friday
    Day shift

    Kinetic Personnel Group, Inc

    Azusa, CA
    3 days ago
  •  ...General Pump Company is seeking an experienced Manual Lathe Machinist to join our machine shop team. If you enjoy precision machining...  ...experienced team. What You'll Do Operate manual lathes, mills, VTLs, drill presses, and other manual machining equipment.... 
    Suggested

    General Pump Company Inc

    San Dimas, CA
    23 days ago
  • $33.41 - $41.54 per hour

     ...About the Job Job Title: Machinist III Location : South El Monte, US, 91733 Company : VACCO Industries, an RBC Company...  ...tools, attachments, accessories, and materials on machines such as mills, lathes, and grinders. Calculates and adjusts the machining... 
    Suggested

    RBC Bearings

    South El Monte, CA
    2 days ago
  •  ...VTL Machinist Eleven Recruiting is hiring an experienced VTL Machinist to set up and operate vertical turning lathes (VTLs) and related...  ...Set up and operate CNC vertical and horizontal turning lathes, mills, and grinders to cut and shape raw materials. Adjust machine offsets... 
    Suggested
    Flexible hours
    Shift work
    Day shift
    Afternoon shift

    Eleven Recruiting

    South El Monte, CA
    5 days ago
  • $40 per hour

     ...Park, in business for over 35 years with immediate openings for a machinist. Our company conducts industrial repairs in shop and in the...  ...Machinist Job Responsibilities: Operates conventional lathe and mills. Able to work off of verbal instructions or blueprints/... 
    Suggested
    Hourly pay
    Immediate start
    Monday to Friday
    Weekend work

    Tim Guzzy Services

    Baldwin Park, CA
    16 days ago
  •  ...Job Description Job Description CNC Mill or Lathe Machinist – 1st and 2nd Shift Immediate Temp to hire position – City of Monrovia, CA Essential Functions: Perform Set-Up’s and Operate CNC Mill/Lathes Machines According to Process Sheets under General Supervision... 
    Temporary work
    Immediate start
    Day shift
    Afternoon shift

    Technical Works Specialized Staffing

    Monrovia, CA
    21 days ago
  •  ...Job Description Job Description We are looking for experienced CNC Machinists to set up and operate CNC mills and lathes in a precision manufacturing environment. This role is responsible for producing high-quality plastic and non-metallic components while maintaining... 
    Full time
    Temporary work
    Part time
    Local area

    Express Employment Professionals

    Arcadia, CA
    28 days ago
  •  ...Machine Operator, where you'll set up and operate CNC lathe and mill machines to produce high-quality parts with a focus on tight-...  ...PM (with the option for overtime), and is ideal for a hands-on machinist who takes pride in producing work that meets specificationsevery... 
    Full time
    Monday to Friday

    Partners Personnel

    Baldwin Park, CA
    5 days ago
  • $20 - $30 per hour

     ...CNC Machinist | El Monte, CA This Jobot Job is hosted by: Alizen Rodriguez Are you a fit? Easy Apply now by clicking the Apply button...  ...have 3-5+ years of experience setting up and operating CNC mills and lathes. Interested in hearing more? Easy Apply now by clicking... 
    Hourly pay
    Local area

    Jobot

    El Monte, CA
    5 days ago
  •  ...CNC Machinist I Job Category: Manufacturing Requisition Number: CNCMA006423 Posted: June 23, 2026 Full-Time On-site RBC Southwest Products...  ...tools and other equipment (with major focus on CNC lathes, CNC mills, but may also include conventional lathes, conventinal mills,... 
    Hourly pay
    Permanent employment
    Full time
    Work experience placement
    Local area
    Relocation package
    Flexible hours

    RBC Bearings

    Baldwin Park, CA
    2 days ago
  •  ...CNC Machinist II Machinist II Baldwin Park, CA Machinist II is responsible for performing basic machine setups and operating fabrication...  ...machines, tools and other equipment (with major focus on lathes, mills, grinders, honing machines, drill presses, but may also include... 
    Hourly pay
    Permanent employment
    Work experience placement
    Local area
    Relocation package
    Flexible hours

    RBC Bearings

    Baldwin Park, CA
    5 days ago
  • $72.01k - $101.5k

     ...CNC Machinist We are seeking a skilled CNC Machinist to join our team. The ideal candidate will have experience with setting up and operating conventional CNC mills and lathes, interpreting blueprints and engineering plans, and maintaining high standards of quality assurance... 
    Permanent employment

    Aerotek

    El Monte, CA
    3 days ago
  • $28 - $35 per hour

     ...Basic operation of multiple CNC machines: Touch off tools when consumables are changed, Change out consumable tooling (ex. Drills, end mills, inserts), Make tool offset changes to ensure parts are to print. Ensure quality by using various measuring tools such as... 
    Hourly pay

    Georg Fischer

    Baldwin Park, CA
    6 days ago
  • $30 - $34 per hour

     ...the department lead or manager, develops, edits, revises, and reviews drawing to create the CNC (CAM) programs for the 3-5 axis mill and 5 axis (Swiss) lathe manufacturing equipment using CAD models and drawings. Documents manufacturing processes. This position... 
    Monday to Friday
    Day shift

    Key Skilled Personnel

    Monrovia, CA
    3 days ago
  • $45 - $70 per hour

     ...to ensure safe and repeatable operations. Work closely with machinists and operators to troubleshoot machining issues and transfer optimized...  ...Nice to have: Manual machining experience, including set up on mills and lathes, and familiarity with turning and grinding... 

    Karman Space & Defense

    El Monte, CA
    3 hours ago
  • $28 - $35 per hour

     ...CNC Machinist This role focuses on operating and setting up 3, 4, and 5-axis CNC mills to produce precision components for specialized manufacturing projects. You will work from detailed blueprints and mechanical assemblies, perform accurate inspections, and complete... 
    Contract work
    Temporary work
    Apprenticeship

    Aerotek

    Monrovia, CA
    20 hours ago
  •  .../PTO schedule Job Summary We are seeking a experienced Machinist to join our team. In this position, you will interpret blueprints...  ...to select the correct tooling & machine set up for job CNC Mill & Lathe operation Conventional Mill & Lathe work Operate... 

    Sabrin Corporation

    Pasadena, CA
    19 days ago
  •  ...Job Description Job Description The Role Complete Metal Design is hiring a CNC Setup Machinist for our mill and lathe departments. This is a setup-first role. Your main job is getting machines dialed in: our programmer hands you a proven job with a setup sheet... 

    Complete Metal Design inc

    Glendora, CA
    3 days ago
  •  ...tolerance components. What You'll Do Program, set up, and operate advanced CNC equipment, including: Doosan SMX 2600ST Mill-Turn (9-Axis) Doosan HP 5100II HMC (Tombstone Fixturing) Okuma 2SP-150H Lathe Tsugami Swiss Lathe (Hobbing Head Attachment)... 
    Full time

    AtWork!

    Baldwin Park, CA
    4 days ago
  • $30.5 - $57.25 per hour

     ...Description Job Description Description: Senior Aerospace Machinist 1st shift: 9/80 work schedule Pay range: $30.50 to 57.25/...  ..., attachments, accessories, and materials on machines, such as mills, lathes, jig borers, grinders, and shapers. Calculates and... 
    Contract work
    Day shift

    Amtec Enterprise

    Pasadena, CA
    6 days ago
  •  ...CNC Machinist The CNC Machinist is responsible for setting up, operating, and machining complex precision components using advanced multi...  .... Key Responsibilities Set up and operate 5-axis CNC mills and machining centers to produce precision components. Interpret... 

    RimePro Inc

    La Puente, CA
    5 days ago
  •  ...involves developing highly diversified and complex programs for milling, drilling, boring, and tapping of Aerospace parts while...  ...Vericut in a machining environment. Previous work experience as a machinist or equivalent is advantageous. Proficiency in Catia/Mastercam... 
    Work experience placement

    Eleven Recruiting

    South El Monte, CA
    6 days ago
  •  ...CNC Machinist Azusa, California Full Time Programs CNC jobs both at the machines and in software Sets up and operates a variety of CNC and conventional machine tools to produce precision parts and instruments. Oversee other machinists both on CNC and conventional machinery... 
    Full time
    Apprenticeship

    Veracity

    Azusa, CA
    2 days ago
  •  ...fast-paced manufacturing environment Job Details Candidates should have 3-5+ years of experience setting up and operating CNC mills and lathes. Jobot is an Equal Opportunity Employer. We provide an inclusive work environment that celebrates diversity and all... 
    Local area

    Jobot

    South El Monte, CA
    4 days ago
  •  ...What You'll Do: Interpret job travelers and select the correct tooling and machine setups for each project. Operate CNC mills and lathes, as well as conventional mills and lathes. Perform precision machining on close-tolerance parts (+/- 0.001", +/- 0.000... 
    Local area

    Jobot

    Pasadena, CA
    1 day ago
  •  ...CNC Machinist Programmer Azusa, CA, USA About the Job CNC Machinist Programmer Are you ready to take on a key role in the manufacturing and precision machining industry? We are looking for a proactive and detail-oriented professional to join our team as a CNC... 
    Full time
    Apprenticeship

    HR Journals LLC

    Azusa, CA
    9 days ago
  • $40 - $45 per hour

     ...Job Description CNC Milling & Turning Programmer Location: South El Monte, CA Pay: $40-$45/hr Schedule: Mon-Fri 6:00AM - 3:30PM Full-Time A growing manufacturing company in the South El Monte area is seeking an experienced CNC Milling & Turning Programmer... 
    Full time

    Kinetic Personnel Group, Inc

    South El Monte, CA
    2 days ago
  •  ...teamwork abilities. High school diploma or equivalent; technical degree preferred. Experience with various CNC machines, including mills and lathes. Commitment to safety and quality in a manufacturing environment. About Us: Complete Metal Design Inc has been a... 

    Complete Metal Design inc

    Glendora, CA
    5 days ago
  • $72.01k - $101.5k

     ...Job Description Job Description Job Title: CNC Machinist Job Description We are seeking a skilled CNC Machinist to join our team....  ...have experience with setting up and operating conventional CNC mills and lathes, interpreting blueprints and engineering plans, and... 
    Weekly pay
    Permanent employment
    Temporary work
    Work at office

    Aerotek

    El Monte, CA
    7 days ago
  •  ...requirements. Qualifications Minimum of 7+ years of CNC programming experience with lathes, multi-axis horizontal and vertical mills. Strong proficiency in MasterCAM programming within an aerospace machine shop environment. Extensive experience creating... 

    RimePro Inc

    Arcadia, CA
    2 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Mill Machinist. Be the first to apply!