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Injection Molding Internship Jobs (NOW HIRING)

... injection molding, extrusion, sheet metal, etc.). * Possess deep knowledge of mechanical ... internship programs, and more. * We offer employee resource groups, volunteer paid time off ...

Staff Mechanical Engineer

San Jose, CA · On-site

$152K - $250K/yr

... injection molding, extrusion, sheet metal, etc.). * Possess deep knowledge of mechanical ... internship programs, and more. * We offer employee resource groups, volunteer paid time off ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

... injection molding and assembly processes. * Recommend manufacturing equipment and processes ... Assists with mentoring of interns and plant floor technicians * Must be able to interact and ...

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Injection Molding Internship information

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$31K

$89.4K

$118K

How much do injection molding internship jobs pay per year?

As of Jul 13, 2026, the average yearly pay for injection molding internship in the United States is $89,430.00, according to ZipRecruiter salary data. Most workers in this role earn between $80,500.00 and $104,500.00 per year, depending on experience, location, and employer.

What is an Injection Molding Internship?

An Injection Molding Internship is a temporary position, often for students or recent graduates, that provides hands-on experience working with plastic injection molding processes in a manufacturing environment. Interns typically learn about machine operation, mold setup, troubleshooting, quality control, and safety protocols. This internship helps participants develop practical skills and gain insight into the manufacturing industry, preparing them for future careers as injection molding technicians, engineers, or related roles.

What is the difference between Injection Molding Internship vs Injection Molding Technician?

AspectInjection Molding InternshipInjection Molding Technician
Required CredentialsTypically pursuing or recent graduate in engineering or manufacturingVocational training or technical certification, some experience
Work EnvironmentLearning-focused, supervised, entry-levelHands-on, operational, maintenance-focused
Employer & Industry UsageInternships offered by manufacturing companies for trainingFull-time role in plastic manufacturing plants

In summary, an Injection Molding Internship is a training position for students or recent graduates gaining industry experience, while an Injection Molding Technician is a full-time role responsible for operating and maintaining molding equipment. Internships serve as a stepping stone toward technician roles in the plastic manufacturing industry.

What are the key skills and qualifications needed to thrive as an Injection Molding Intern, and why are they important?

To thrive as an Injection Molding Intern, you need a basic understanding of manufacturing processes, mechanical aptitude, and relevant coursework in engineering or plastics technology. Familiarity with injection molding machines, CAD software, and safety protocols is often expected, along with a willingness to learn specific industry certifications. Strong problem-solving skills, attention to detail, and effective communication help interns stand out in a team-oriented production environment. These competencies are critical for ensuring product quality, minimizing downtime, and supporting efficient, safe manufacturing operations.

What are some common challenges faced by interns during an injection molding internship, and how can they overcome them?

Injection molding interns often encounter challenges such as learning to operate complex machinery, understanding quality control standards, and troubleshooting minor production issues. Adjusting to a fast-paced manufacturing environment can also be demanding. To overcome these challenges, interns are encouraged to ask questions, seek mentorship from experienced technicians, and actively participate in hands-on training. Demonstrating initiative and a willingness to learn can help interns quickly build technical skills and confidence in the role.
More about Injection Molding Internship jobs
What cities are hiring for Injection Molding Internship jobs? Cities with the most Injection Molding Internship job openings:
What are the most commonly searched types of Injection Molding jobs? The most popular types of Injection Molding jobs are:
What states have the most Injection Molding Internship jobs? States with the most job openings for Injection Molding Internship jobs include:
Infographic showing various Injection Molding Internship job openings in the United States as of July 2026, with employment types broken down into 1% As Needed, 85% Full Time, 10% Part Time, 2% Contract, and 2% Nights. Highlights an 95% Physical, 1% Hybrid, and 4% Remote job distribution, with an average salary of $89,430 per year, or $43 per hour.

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 25 days ago


Job description

About Cretex Medical

Cretex Medical is a leading contract manufacturer of precision components and assemblies for the medical device industry.  Our customers view us as a trusted partner in the areas of injection molding, laser processing, metal stamping and device assembly.  Learn more at www.cretexmedical.com.

Production Supervisor Position Summary:

The Production Supervisor is responsible for leading and coordinating daily manufacturing operations to meet production goals in alignment with safety, quality, and delivery requirements. This role oversees production staff, ensures efficient use of resources, and drives continuous improvement in manufacturing methods and processes. The Production Supervisor promotes a safe, compliant, and high-performing work environment while achieving production objectives at the lowest possible cost.

Shift Available:  7th Shift Monday - Wednesday and every other Sunday 5:30pm - 6:30am


  • Maintain workflow by monitoring steps of the process; setting processing variables; observing control points and equipment; monitoring personnel and resources; studying methods; implementing cost reductions; developing reporting procedures and systems; facilitating corrections to malfunctions within process control points; initiating and fostering a spirit of cooperation within and between departments
  • Ensure the production schedule is attained and issues are resolved in a timely manner
  • Maintain quality and safety by establishing and enforcing standards
  • Communicate and deliver employee communication tools for job performance to include annual performance goals, employee recognition, training, and development, coaching and counseling
  • Lead staff through visual metrics and tiered accountability meetings
  • Monitor staffing levels and partners with Human Resources on talent management initiatives
  • Enforce company standards by following and enforcing policies and procedures
  • Lead project management activities and teams
  • Complete special projects as needed
  • Drive process improvements in quality, delivery, inventory, and safety procedures
  • Ensure work instructions, set up sheets, and checklists are used and understood
  • Enter production information into the ERP system on a timely basis
  • Create and maintain Power BI reports and dashboards; develop professional PowerPoint presentations to communicate performance, projects, and results
  • Efficiently navigate multiple Microsoft Office applications to support reporting, analysis, and operational decisionmaking
  • Support and comply with the company Quality System, ISO, and medical device requirements
  • Read, understand, and follow work instructions and standard work
  • Partner with other business segments:  sales/marketing, customer service, engineering, quality, and finance
  • Ensure business systems are implemented, maintained, and functioning properly
  • Participate in the Operational Excellence Program

  • 3+ years of experience leading processes and teams in a medical device manufacturing environment, with a strong preference to have experience in plastic injection molding
  • Proven experience to consistently achieve short and long-term business results
  • Ability to work in a cleanroom environment
  • Clear and effective verbal and written communication skills
  • Attention to detail
  • Demonstrated analytical skills, including advanced proficiency with Microsoft Excel (pivot tables, formulas, data analysis)
  • Organizational skills
  • Microsoft Office proficiency (Outlook, Word, Excel, PowerPoint)
  • Ability to work in a fast-paced team environment
  • Ability to prioritize and multitask

Preferred Knowledge, Skills, and Abilities:

  • Lean Practitioner Certification
  • Associate Degree in a Business or Technical field 
  • Supervisory Certificates
  • Functional experience
  • Quality and/or Operational Excellence training such as Lean, Six-Sigma, ASQ-CQE, etc.
  • Working knowledge of ISO 9001/13485
  • Mechanical Aptitude
  • Continuing Education; including participation in local chapters, associations, and/or organizations

What is it like to work at Cretex Medical?  

We recognize the contribution of every individual and promote growth, safety and security for all our employees. Cretex Medical values performance and pays competitive wages along with a rich benefit package. We offer a positive work environment with a focus on continuous improvement.  

Here are some of things that employees have said about working for Cretex Medical:  

  • “The culture at Cretex is collaborative. Everyone here is willing to help you whether it is a director, a machinist, or your boss. Everyone is always willing to help you figure out a project and get it done right.” 
  • “I would tell potential interns that Cretex is a great company to work for. It has set a high bar for corporate culture as well as the quality of work you can do. I would definitely recommend it.” 
  • “I learned that I really like the medical device industry. The importance and the gravity of what we do here is felt by the employees. You can have that passion in your work because you know what you are striving for is to save lives.” 

We encourage you to explore the many opportunities Cretex Medical can offer you as a valued team member. 


USD $75,000.00 - USD $123,800.00 /Yr.

This pay range reflects the base hourly rate or annual salary for positions within this job grade, based on our market-based pay structures. Actual compensation will depend on factors such as skills, relevant experience, education, internal equity, business needs, and local market conditions. While the full hiring range is shared for transparency, offers are rarely made at the minimum or maximum of the range.


Pay Range details:

Supervisor I- $75,000-$112,600

Supervisor II- $82,600-$123,800

* Supervisor II will require a minimum of 5 years experience leading teams in a medical device manufacturing environment along with Associate degree in a business or technical field  

All Employees:

Our 401k retirement savings plan with a company match contribution; onsite health clinics, discretionary holiday bonus program (based on years of service), Cretex University, 24/7 employee assistance program with access to five confidential visits with a licensed counselor at no cost, wellness program with incentives, an employee death benefit, and employee sick and safe leave are available to all Cretex employees. 

20+hours:

Cretex’s medical benefit package includes: comprehensive medical insurance with access to virtual providers; dental insurance (Little Partners Dental benefit covers services 100 percent for children 12 and younger when seen by a Health Partners in network provider); vision insurance; a pre-tax health savings account, healthcare and dependent care pre-tax reimbursement accounts; paid holidays, paid time off; and our discretionary profit sharing program are available to employees working 20+ hours/week. 

30+ hours:

Parental Leave, accident and critical illness benefits, optional employee, spouse, and child life; short and long term disability; company provided life insurance; and tuition assistance programs are available to employees working 30+ hours per week. 

(Some benefits are subject to eligibility criteria.)

Applicants will receive consideration for employment regardless of their race, color, creed, religion, national origin, sex, sexual orientation, gender identity, disability, age, veteran status, marital status, family status, status with regard to public assistance, or any other protected status as required by law.  

Our company uses E-Verify to confirm the employment and eligibility of all newly hired employees. To learn more about E-Verify, including your rights and responsibilities, please visit www.dhs.gov/E-Verify.