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About DOOR3

  • LeadershipHeadquartered in New York and Kyiv, meet our experienced leadership and delivery heads
  • Headquartered in New York and Kyiv, meet our experienced leadership and delivery heads

Join our global team of talented professionals committed to building things of lasting value

  • OfficesBased in NYC — working globally
  • Based in NYC — working globally

We build business applications.

We provide our clients with expert guidance and build software vital to their organizations.

Our clients benefit from a peerless capacity to de-risk complex software projects

  • 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
    We design software your users will love, built on research and expertise

  • We design software your users will love, built on research and expertise

  • Food & Beverages
    FreshDirect
    One of the nation's leading online grocery brands
    One of the nation's leading online grocery brands

  • Legal Services
    Cadwalader
    Connecting a global law firm on one award-winning intranet
    Connecting a global law firm on one award-winning intranet

  • Information Technology & Services
    Stillwell-Hansen
    Bringing mission-critical business software into the 21st century
    Bringing mission-critical business software into the 21st century
    Founded in 2002, we’re headquartered in New York City and supported by a global team of talented professionals committed to building things of lasting value

An ongoing (live!) conversation about problems and solutions

Open Hours: Episode 25

Migration of Legacy Systems: A Comprehensive Guide

Open Hours: Episode 24

What nerds bring to space, with Lee Azzarello

Open Hours: Episode 23

DOOR3 Stands with Ukraine: How we strategized to support our colleagues before, during, and after Russia's invasion

Open Hours: Episode 22

How is designing for usability different IRL vs digital?

  • Open Hours: Episode 24
    What nerds bring to space, with Lee Azzarello

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