Mechanical Engineering Intern — 3D Printer Systems

Scrap Labs LLC; Boulder (CO); On-site; USD 36,000 - 68,000; Full time

Job summary

Scrap Labs LLC in Boulder, CO is seeking a Mechanical Engineering Intern for Spring 2027 to design, build, and validate subsystems for our metal 3D printer platform. This hands-on internship spans CAD design, prototyping, testing, and documentation.

You will work on-site with a close-knit team, using SolidWorks and other CAD tools to move from concept to working hardware, with mentorship and real subsystem ownership.

Qualifications

• Currently pursuing a Bachelor's or Master's degree in Mechanical Engineering with sophomore standing by Spring 2027.
• CAD experience in SolidWorks or similar; SolidWorks preferred.
• Demonstrated hands-on build experience through projects, lab work, internships, or personal builds.
• Ability to work on-site in Boulder, CO for the duration of the internship.

Responsibilities

• Design and iterate mechanical subsystems and fixtures for a metal powder bed fusion (SLM) 3D printer platform.
• Create and maintain CAD models and drawings, including clean assemblies and practical detailing.
• Build prototypes and test setups, then debug issues hands on and drive design improvements.
• Support integration with cross functional teams, electrical, firmware or software, optics or laser, and process development.
• Perform basic sizing calculations and tolerance checks for structures, fasteners, and mechanisms.
• Assist with manufacturing and assembly.
• Document build and test results clearly, including photos, notes, and revision changes.

Skills

Hands-on build experience

Strong communication

Documentation

Team collaboration

Education

Bachelor's/Master's in Mechanical Engineering (student)

Tools

SolidWorks

Job description

Scrap Labs LLC in Boulder, CO is seeking a Mechanical Engineering Intern for Spring 2027 to design, build, and validate subsystems for our metal 3D printer platform. This hands-on internship spans CAD design, prototyping, testing, and documentation.

You will work on-site with a close-knit team, using SolidWorks and other CAD tools to move from concept to working hardware, with mentorship and real subsystem ownership.