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  • Services
    • Technology Consulting
      We provide expert guidance to modernize and evolve your organization.
    • Software Development
      Our teams build software vital to your enterprise on-time and on-budget.
    • User Experience Design
      Your project succeeds by the strength of our UX/UI design & frontend development.
  • About Us
    • About Us
      Founded in 2002, we're a technology consultancy and software development firm.
    • Leadership
      Headquartered in New York and Kyiv, meet our experienced leadership and delivery heads.
    • Careers
      Join our global team of talented professionals committed to building things of lasting value.
  • Industries
  • Our Work
  • Blog
  • Contact Us

Get in touch.

This could be the start of something beautiful.
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Services
  • Technology Consulting
  • Software Development
  • User Experience Design
About Us
  • Our Story
  • Leadership
  • Careers
Our Work
  • Industries
Blog
  • Authors
New York City, NY
  • Privacy Policy
  • projects@door3.com
  • (212) 673-1818 Main
  • (646) 351-0012 Sales
  • Door3 Linkedin
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22 Cortlandt Street, Suite 1101
New York, NY 10007