We are a UX design agency based in New York City.
The products and designs we produce are informed, intuitive, and long-lasting. Our client list is global.

Dr. Treat: From Project Beginnings to MVP launch
DOOR3 designed and built a boutique vet’s mobile and desktop product, honing in on their blue sky vision.
Recent Awards
2023 GDUSA American Digital Design
Awards, Startup Website
& Mobile Redesign
2023 Web Excellence Award Winner,
UX Mobile Development
2022 W3 Award Winner,
Education Websites
Our UX Design Philosophy
All About the People
Our design team provides value to projects by empathizing with the user. Designing for usability maximizes return on investment across product sectors.
Purpose is the Point
We put function first. Our aim is timeless, intuitive, functionality. From the start, we drive toward the why.
Collaborative & Multidisciplinary
A well designed application isn’t just about design – it’s created through the expertise drawn from many disciplines. Our designers work closely with business analysts, project managers, and engineers to make something that works well, for your needs.

We design software your users will love, built on research and expertise.
Our Design Capabilities
Enterprise Design Systems
A design system is a reusable UI/UX framework that accelerates frontend development, while enforcing uniform design standards.
UX & Design Audit
A UX & design audit identifies and recommends corrections to the points of friction in usability, inconsistencies in design, and shortcomings to accessibility.
Data Visualization
Data visualization uncovers actionable intelligence hidden within your business. It unlocks valuable insights in your data with beautifully designed dashboards.
User Interface Design
Our design team produces elegant and purposeful user interfaces for even the most complex enterprise applications, informed by a deep understanding of your users’ needs.
Testing/Solution Validation
Our validation services road test critical applications, designs, and prototypes with actual users to determine if your products meet requirements — and help you discover new possibilities.
User and Business Research
To collect the best intelligence and provide the deepest analysis, our researchers go right to the source: your customers, competitors, employees, and stakeholders.
Our Design Consultants
Tom McClean
UX & Design Practice Lead
Federico Fernandez
Senior UX Designer
Jon Allen
Senior UX Designer
Bailey Costello
Senior UX Designer
“They are an extremely professional and knowledgeable company.”
Paula Balzer,
CEO, gigHire

Industries
Financial Services
Empowering enterprises with actionable intelligence, insightful dashboards, and high-performance reporting platforms.
Insurance
Removing the complexity and friction from quote generation, claims management, and data processing with effective solutions.
Legal
Connecting global offices, fostering collaboration, and promoting productivity with secure intranets and bespoke applications.
Construction
Developing systems to manage complex supply chains, connecting distributed workforces with unified field and operations software solutions.
Startup/Fintech
Rapidly launching, iterating, and perfecting new products in both consumer and business-focused markets.
Non-Profit & Education
Managing complex knowledge bases, connecting communities, and personalizing user journeys for everyone from prospective students to faculty and staff.
Consumer & Retail Services
Expanding audiences and driving sales through technical and user experience innovation.
Our Services
DOOR3 modernizes technology and evolves the enterprise, whether that’s a single business application or an entire organization. Our purpose is to provide our clients with expert guidance and to build software vital to their organizations.
Software Development
DOOR3 provides vital solutions on time and on budget. Our clients benefit from a peerless capacity to de-risk complex software projects.
User Experience Design
We design software your users will love, built on research and expertise. Whether the solution we build together is for your employees or your customers, with better design we can make every day easier.
Let’s work together.