Join Our Team!

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 or call 626.359.2551.