Graduate-Level Engineering Intern

  • Type: Full-time, temporary
  • Location: Phoenix, AZ
  • Starting Date: Negotiable


  • Design earplugs and earplug components, or modify existing designs using established manufacturing processes such as injection molding, dip molding, etc.
  • Integrate electronics and biometric sensors into earplugs
  • Perform measurements of earplug performance using test fixtures, microphones, and various sound and vibration sources
  • Perform measurements of electronic components and assemblies, including microphones, accelerometers, and other sensors
  • Design tests and experiments to analyze acoustic properties of fluids, polymers, and existing earplug designs and assemblies
  • Document designs and measurement and analysis procedures and write up results
  • Make earplug parts and assemble them into working earplugs
  • Maintain laboratory, repair damaged equipment or facilities, and debug any sources of noise in acoustic and electrical measurements


  • Currently enrolled as a graduate student in Mechanical Engineering, Acoustical Engineering, Physics, or a related field
  • Expertise with CAD/CAE programs, electrical circuit design, or embedded software programming
  • Laboratory experience taking measurements with electronics and transducers, especially microphones, and eliminating sources of noise in measurements
  • Understanding of signals and systems as they apply to acoustics and human hearing, and electronics
  • Demonstrated verbal and written communication skills
  • Ability to work with a team as well as independently


  • Experience with Autodesk Fusion 360, LabVIEW, and/or MATLAB
  • Experience with C++ or Python for programming Raspberry Pi or Arduino
  • Interest in audio, audiology, hearing protection, and/or hearing augmentation

To apply

Please send your cover letter, resume, and transcript to [email protected]. Please include your name and the position title you wish to apply for in the email subject line.