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Internship Plastic Design Jobs (NOW HIRING)

Amperesand

Mechanical Design Engineering Internship

Reno, NV · On-site

$75K - $102K/yr

Internship Duration: May 2026 - August 2026 Role Summary Amperesand is working to develop, build ... Model and design complex electro-mechanical parts, including plastics, sheet metal, insulators ...

Amperesand

Mechanical Design Engineering Internship

Reno, NV · On-site

$75K - $102K/yr

Internship Duration: May 2026 - August 2026 Role Summary Amperesand is working to develop, build ... Model and design complex electro-mechanical parts, including plastics, sheet metal, insulators ...

MSI Mold Builders

CNC Internship

Cedar Rapids, IA · On-site

$20/hr

... the design and production of value added plastic molds. Our customers rely on us to design and ... Interns under age 18 must have a parent co-sign the internship agreement. * College: Students ...

MSI Mold Builders

CNC Internship

Cedar Rapids, IA

... the design and production of value added plastic molds. Our customers rely on us to design and ... Interns under age 18 must have a parent co-sign the internship agreement. * College: Students ...

Isco Industries

CAD Engineer

Louisville, KY · On-site

Essential Duties * Specify and create CAD drawings for custom-fabricated assemblies and ... Prior work or internship experience working with plastics and/or in a manufacturing environment ...

TriMas Corporation

Summer Internship - Engineering

Clinton, MI · On-site

$16.50 - $21.50/hr

Omega Plastics Inc Primary Location: 24401 Capital Blvd, Clinton Township, MI 48036 USA Workplace ... we design andmanufacture high-quality packaging solutions that meet the standards ourcustomers ...

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How much do internship plastic design jobs pay per hour?

As of Jun 6, 2026, the average hourly pay for internship plastic design in the United States is $16.33, according to ZipRecruiter salary data. Most workers in this role earn between $14.42 and $19.23 per hour, depending on experience, location, and employer.

What is the difference between Internship Plastic Design vs Plastic Design Engineer?

AspectInternship Plastic DesignPlastic Design Engineer
QualificationsEnrolled in or recent graduate of relevant engineering or design programBachelor's or Master's in Mechanical, Industrial, or Plastic Engineering
Work EnvironmentInternship in design labs or manufacturing settings, supervisedFull-time engineering office or manufacturing plant, responsible for projects
ResponsibilitiesAssisting in design tasks, learning software, supporting projectsDeveloping and optimizing plastic product designs, testing, and analysis

In summary, an Internship Plastic Design is a temporary learning position for students or recent graduates gaining experience, while a Plastic Design Engineer is a full-time professional responsible for designing and developing plastic products in a corporate setting.

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What are the most commonly searched types of Plastic Design jobs? The most popular types of Plastic Design jobs are:
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Internship Plastic Design jobs near you
Infographic showing various Internship Plastic Design job openings in the United States as of May 2026, with employment types broken down into 100% Part Time. Highlights an 100% In-person job distribution, with an average salary of $33,957 per year, or $16.3 per hour.

Mechanical Design Engineering Internship

Amperesand

Reno, NV • On-site

$30 - $45/hr

Other

Posted 6 days ago

Job description

Internship Duration: May 2026 - August 2026 

Role Summary

Amperesand is working to develop, build, test, and validate a ground-up redesigned next-generation solid state transformer (SST) and the power stage modules (PSMs) that convert power from medium-voltage AC to customer-facing DC output.  This internship will include building and testing of prototype units, root cause analysis of issues found, and design and changes of parts to fix or improve.   

Responsibilities: 

  • UtilizeCAD software to create detailed mechanical designs.  3DX/Catia experience preferred but not required. 
  • Model and design complex electro-mechanical parts, including plastics, sheet metal, insulators, magnetic components, and high-voltage connectors.
  • Perform mechanical design analysisby means offirst principal calculation or simulation with commercial software, including structural FEA, thermal CFD, vibration, and fatigue assessments. 
  • Solve packaging challenges involving electrical isolation, sealing, thermal dissipation, EMI/EMC shielding, and mechanical shock/vibration.
  •  Perform prototype development, fabrication, assembly, and mechanical testing of new designs.
  •  Support root-cause analysis of design issues in pilot or production builds and lead iterative improvements. 
  •  Define and execute validation test plans including structural, thermal, and environmental testing. 
  • 2D drawings with GD&T for production and inspection.
  • Create engineering documentation, tolerance stacks, BOMs, and release packages through PLM systems.
  •  Collaborate cross-functionally with electrical, thermal, firmware and controls, manufacturing, test, and industrial design teams.
  •  Work closely with suppliers to optimize DFM, DFA, and tooling strategies for high-volume production. 

Qualifications: 

  • Final year undergraduate standing or graduate study inMechanical Engineering or a closely-related field. 
  • Expertise in CAD modeling using 3D EXPERIENCE (CATIA V6/V5), SolidWorks, NX, or Creo. 
  •  Deep understanding of mechanical fundamentals-statics, dynamics, heat transfer, and materials.
  • Working knowledge of materials: metals (aluminum, steel), plastics, ceramics, gaskets, potting compounds.
  • Comfortable with root-cause analysis, failure mode resolution, and mechanical reliability testing.
  • Passion for product innovation, sustainability, and enabling electrification through engineering excellence.

Bonus Qualifications: 

  • Strong background in structural, thermal, and vibration analysis using commercial software,e.g.Ansys 
  • Proficiency in GD&T, tolerance analysis, and DFM/DFA principles. 
  • Familiarity with PCBAs, connectors, and mechanical integration of high-density electronic assemblies.
  • Experience with high-volume manufacturing processes such as injection molding, die casting, extrusion, and sheet metal forming.
  • Experience with medium- to high-voltage systems and insulation coordination (creepage, clearance, potting, sealing).
  • Experience working in Agile development environments, including task management and sprint planning using Scrum methodologies and tools like Jira.

Please note: This role requires working on-site 5 days a week. We do not offer hybrid or remote options. 

Compensation: $30 - $45/hour depending on location and level of experience 

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