JOB DETAILS

Manufacturing Engineer Intern

CompanyGentex Corp
LocationRancho Cucamonga
Work ModeOn Site
PostedJanuary 21, 2026
About The Company
Leveraging a product development and manufacturing history that spans more than 125 years, Gentex Corporation is a global leader in providing innovative protective gear solutions that enhance personal protection and situational awareness for global defense forces, emergency responders, and industrial personnel operating in high performance environments. Our portfolio includes protective solutions sold under the Gentex, Ops-Core, and PureFlo brands. Gentex delivers high performance flight equipment to meet the evolving challenges and requirements of aircrew and aircraft maintainers, including helmet systems and capability upgrades. Ops-Core provides a comprehensive portfolio of headborne protection, situational awareness, high performance optics, and respiratory protection for elite defense, law enforcement, and security forces. PureFlo powered air purifying respirators deliver next-generation all-in-one protection for a range of industrial workers in light to heavy duty environments. Our investment in our state-of-the-art in-house design and engineering, manufacturing, and testing facilities allow us to provide world-class solutions to our customers. As leaders in research and development, we are focused on continuously advancing design, performance, and protection, our products deliver a comprehensive set of integrated capabilities to support the diverse mission or job requirements of our customers. We are committed to not just meeting product requirements, but pushing them forward. Our multiple awards and contracts, such as our re-awarded USSOCOM contract, Air Force OTA Agreement, ALEP Daytime Spectacle Contract, and more are a testament to the high quality of our products and our commitment to providing next generation protection. Learn more about Gentex: https://www.gentexcorp.com/ Learn more about Ops-Core: http://ops-core.com/ Learn more about PureFlo: https://www.gentexcorp.com/pureflo-country-selector/
About the Role

Description

GENTEX AT A GLANCE:

At Gentex Corporation, we’ve created an environment where great ideas and great people can thrive. Leveraging a history that spans over 130 years, Gentex is a global leader in personal protection and situational awareness solutions for defense forces, emergency responders, and industrial personnel operating in high performance environments. Join our multinational team of exceptional and dedicated employees around the world and work on challenging and rewarding projects, grow your skills, and advance your career all while making a positive difference in the lives of our customers. Together, you and Gentex can build a career that’s uniquely yours.

Requirements

 MINIMUM QUALIFICATIONS:     

  • Pursuing or recently completed a Bachelor’s degree in Manufacturing, Mechanical, Electrical, Mechatronics, Industrial, or related Engineering field
  • Interest in automation, robotics, or manufacturing systems
  • Basic understanding of manufacturing processes and engineering drawings
  • Exposure to PLC concepts, sensors, or automation through coursework, labs, or projects is a plus
  • Comfortable using Microsoft Excel and basic data analysis tools
  • Strong attention to detail and willingness to learn in a hands-on production environment

 ABOUT THE JOB! 


The Manufacturing Engineering Intern supports manufacturing operations by assisting with basic automation, equipment support, and process improvement initiatives. This role is designed for students or recent graduates seeking hands-on experience with automated and semi-automated manufacturing systems in a fast-paced production environment. 

  

What You’ll Learn  

  • Fundamentals of manufacturing operations and automation
  • Basics of equipment troubleshooting and process improvement
  • How data is used to improve productivity and quality
  • Real-world experience working with manufacturing, quality, and maintenance teams

 RESPONSIBILITIES:   

 ESSENTIAL FUNCTIONS:   

  • Assist manufacturing engineers with support and improvement of automated and semi-automated production equipment
  • Help collect and analyze production and equipment data (cycle time, downtime, scrap, rework)
  • Support basic troubleshooting of equipment issues under supervision (sensors, actuators, fixtures)
  • Assist with updating work instructions, SOPs, and process documentation
  • Support preventive maintenance activities and simple equipment validation tasks
  • Participate in continuous improvement, Lean, and 5S projects
  • Assist with quality investigations and corrective actions related to equipment or process issues
  • Support safety initiatives and machine guarding compliance
  • Spend 60–80% of time on the manufacturing floor supporting production and automation activities
  • Work closely with operators, technicians, maintenance, and engineers to support daily operations
  • Observe, document, and help improve manufacturing and automated processes in real time
  • Participate in hands-on activities such as time studies, equipment observations, simple troubleshooting, and data collection
  • Communicate clearly and professionally with shop floor personnel and leadership

 

TO APPLY:

Visit: https://gentexcorp.com/careers/


LOCATION: Gentex’s Rancho Cucamonga facility is in Rancho Cucamonga, CA is a city of about 177,000 residents located just south of the foothills of the San Gabriel Mountains and Angeles National Forest in San Bernardino County, California, United States. About 37 miles east of Downtown Los Angeles, Rancho Cucamonga is the 19th most populous city in southern California and the 27th state-wide. The city's seal, which centers on a cluster of grapes, alludes to the city's agricultural history including winemaking. Also, the Ontario Reign Hockey and Quakers Baseball teams are located 20 minutes from the Rancho Cucamonga location.


Gentex Corporation is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard for any applicable state or federal protected class. Gentex is an E-Verify Participant. Pre-employment drug/alcohol/background screening is required.

Key Skills
Manufacturing ProcessesEngineering DrawingsAutomationRoboticsPLC ConceptsSensorsData AnalysisAttention to DetailTroubleshootingProcess ImprovementLean5SQuality InvestigationsPreventive MaintenanceDocumentationCommunication
Categories
EngineeringManufacturing
Job Information
📋Core Responsibilities
The Manufacturing Engineering Intern supports manufacturing operations by assisting with automation, equipment support, and process improvement initiatives. They will work closely with engineers and operators to improve manufacturing processes and support daily operations.
📋Job Type
full time
📊Experience Level
0-2
💼Company Size
607
📊Visa Sponsorship
No
💼Language
English
🏢Working Hours
40 hours
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