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This could be the start of something beautiful.

Take a peek at what's behind DOOR3.


We are a software consultancy. Our purpose is to benefit our clients — their people, products, and services.
years in business
client successes
driven & talented professionals

We bring empathy, creativity, and collaboration to our clients.

We are a software consultancy.

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.

Our core strengths are software development, technology strategy, and UI/UX design. Our difference is a peerless capacity to safely and reliably deliver solutions on-time and on-budget.

Benefit from our hyper-competent software development, insight-driven strategy, and award-winning design practices. Morgan Stanley benefited. As did AIG, FreshDirect, HP, and hundreds of other organizations.

Examples of what we do:

  • Design and build high-performance, complex software — software that optimizes and runs departments or entire organization.

  • Design and build transactional portals that connect you with your customers, suppliers, affiliates, or staff.

  • Create transformative digital strategy that accelerates your organization’s objectives.

The core values that guide us

Dedication to client success

We bring a spirit of empathy and a willingness to do what it takes. We don’t fail to delivery.

Drive to the "why"

Always favoring simplicity, we remain solutions-oriented and dispassionately pragmatic.

Pursue excellence

The right people do the right work. At DOOR3, we embrace expertise and cultivate excellence.

Act with integrity

We act like owners. We say what we mean and we do the right thing.

Meet our leadership team

Alex Asianov
Founder & President
Alex co-founded DOOR3 in 2002 and currently serves as President. He brings nearly 20 years of expertise in operations management and analysis including business process engineering, systems architecture and integration, and project management of globally distributed software delivery.
Jonathan Blessing
Chief Executive Officer
Jonathan sets the direction of travel for DOOR3’s global team of expert consultants and developers. He brings more than a decade of chief executive experience to the role, and technical expertise secured over years of coding and designing information systems. He ardently maintains our commitments to intellectual honesty and integrity of action as we build and modernize business applications for Fortune 1000 organizations.
Michael Montecuollo
Director of Engagement Management
Michael serves as the Director of Engagement Management and oversees all client engagements at DOOR3. He brings over 14 years of experience in digital strategy, product development, user experience, design and technology to the team.
Michael Collins
Director of Enterprise Solutions
Pedro Dalmau
Chief Operating Officer & Director of Practices
Pedro serves as the COO & Director of Practices at DOOR3 and is responsible for the seamless integration of our various disciplines for each client which includes project management, business analysis, UI/UX, engineering, and quality assurance.
Serena Tan
Practice Lead - PMO
John Malloy
Practice Lead - UX Design
Alessandro Catter-Martinez
Associate Practice Lead - Engineering
Robert Miller
Associate Practice Lead - Engineering
Denys Tarasov
Associate Practice Lead - Engineering
Brandon Bowlby
Practice Lead - QA