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Company Partners


  • John Calloway President
  • John Calloway –

    Founder and Owner

    John is a mechanical engineer with a business and corporate background. As the founder of Halo Technologies, he enjoys scuba diving and running when time permits — usually while the 3D printers are completing their prints! We look forward to serving your prototyping and 3D printing needs.

  • Devon Miller Head Engineer
  • Devon Miller – 

    Head Engineer

    Devon Miller holds a degree in Mechanical Engineering from Florida Atlantic University. Devon serves as Halo’s head engineer and takes lead on all CAD design projects.

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