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Meet DOOR3, a custom software development company building bespoke solutions unique to your business’s needs.

Gain valuable insights

Our custom software development services have served businesses at every scale and within every sector. Whether you need enterprise-level solutions in financial services or are a small nonprofit startup, DOO3 is equipped to be your go-to custom software development company.

While there’s no shortage of custom software development firms in New York City, there aren’t many who know that a holistic approach is the only way to deliver the highest quality custom software development solutions. 

Enter DOOR3, a custom software development company that specializes in custom business software development that considers all facets of your organization. 

Whether you need custom integrations to your out-of-the-box software, or a totally unique solution that covers multiple departments, DOOR3’s custom software development service can provide you with a solution that fits your business, your timeline, and your budget.

The benefits of DOOR3 as your custom software development company

  • Increased efficiency

    Our custom software development services help streamline business operations and optimize efficiency. By implementing untapped automation opportunities and analyzing where current processes create bottlenecks, our team can expedite your return on investment by exponentially increasing your output capabilities.

  • Futureproof and scalable

    Part of our responsibility as your custom software development company is to ensure that the product we build can support your business as it grows. Our custom software development solutions are built to serve you better for years longer than our competitors products, and can easily accommodate any additional functionalities you might need as you expand.

  • Solutions that compete

    When you bring on DOOR3 as your custom software development company partner, you increase your company’s competitive advantage. Our digital custom solutions are built with cutting technology stacks, putting you miles ahead of competitors who are still utilizing cumbersome, outdated software.

  • Enhanced data management and insights

    In today’s increasingly competitive markets, data visibility is key for driving success. Gain a deeper understanding of your business with custom software development. Capture, analyze, and interpret data in real-time to make informed decisions, identify trends, and uncover valuable insights that drive strategic growth.

  • Improved data protection and security

    Data security has long been a major consideration in custom software product development. DOOR3 has extensive experience in protecting valuable data and ensuring that any aspect of solution compliance is addressed. Your security is a top factor in our custom mvp software development.

  • Seamless integration capabilities

    Eliminate silos and integrate third party software across the spectrum of our custom software development solutions. Our custom software development services provide integration options with existing systems and third-party applications, providing seamless data exchange, communication, and collaboration over the entire business.

  • Faster return on investments

    Custom software development costs can scare business leaders from investing in necessary evolutions to their technology stack, and having an in-house team is not always feasible for every business. When you outsource custom software development to DOOR3, you expedite your return on investment with quicker MVPs, streamlined business processes, and increased user satisfaction.

Benefits of our UX audit services

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While there’s no shortage of custom software development firms in New York City, there aren’t many who know that a holistic approach is the only way to deliver the highest quality custom software development solutions.
Enter DOOR3, a custom software development company that specializes in custom business software development that considers all facets of your organization.
Whether you need custom integrations to your out-of-the-box software, or a totally unique solution that covers multiple departments, DOOR3’s custom software development service can provide you with a solution that fits your business, your timeline, and your budget.

An agile custom software development company

  • Collaboration and communication

    We believe that a custom software development company should work in close collaboration with their clients throughout the development process. Our team actively engages with stakeholders to understand your vision, goals, and requirements. We encourage open communication channels, frequent meetings, and feedback sessions to ensure that everyone is on the same page.

    This collaborative approach fosters a transparent and productive working relationship, enabling us to deliver software that aligns perfectly with your expectations.

  • Iterative development

    The process of agile development with a custom software development consultant revolves around iterative development cycles, also known as sprints. Instead of waiting for the entire software to be developed before seeking feedback, we break the project into smaller, manageable tasks. Each sprint focuses on delivering a working increment of the software, which allows for early feedback, testing, and validation.

    This iterative approach ensures that all stakeholders have a clear understanding of the progress made by their custom software development company and can provide valuable insights along the way.

  • Adaptability to changing requirements

    We understand that software development is an evolving process, and requirements may change over time. Our agile methodology enables us to embrace these changes seamlessly as your custom software development company.

    We prioritize flexibility and adaptability, allowing us to respond quickly to new requirements, emerging technologies, or shifting business priorities. By staying agile, we can accommodate changes without compromising the quality or timeline of the project.

  • Continuous improvement

    We emphasize continuous improvement as your custom software development company. We regularly review our development practices, seek feedback from clients and team members, and identify areas for enhancement.

    By incorporating these insights into our work, we continually refine our processes, optimize efficiency, and deliver higher quality software with each iteration.

  • Faster time to market

    The iterative nature of agile development, combined with close collaboration and streamlined processes, allows us to deliver software solutions faster.

    By breaking the project into smaller increments, we can release functional features earlier, providing you with the opportunity to gain a competitive edge and start reaping the benefits sooner.

Liz Flyntz

A showcase of our custom software development company's success stories

Explore our custom software development success stories. We’ve played a critical role as a custom software development company in projects ranging from BI dashboards to full rebuilds of mission critical business applications. DOOR3’s custom software development services revolutionize operations, improve efficiency, and increase profitability. 

From manufacturing giants to global law firms, our work spans across a diverse set of industries, meeting each project with curiosity and empathy.

“The quality has been excellent. We’ve had minimal issues or need for improvements. It has been a pleasure to work with them, and they’ve kept the project on track.”

Sr Product Mgr,
Personal Protection Equipment Manufacturer

Our five step process to custom software development solutions

  • 1

    Initial consultation

    • Receive 30 minutes of free custom software development consulting and learn more about the benefits of custom software development
    • Establish needs and scope of your software development project
    • Agree upon whether there is a mutual fit between DOOR3 and your organization, and begin your project with one of the best best custom software development companies in New York City
  • 2

    Conduct a technical discovery

    • Engage in a low cost project analysis before spending significant capital
    • Work with your new custom software development agency partner to build an in-depth understanding of your business and a detailed custom software development services estimate
    • Work with your DOOR3 team to break down the results of your discovery and build a product roadmap that meets your needs
  • 3

    Custom MVP software development begins

    • DOOR3 developers begin building your desired product with all stakeholder requirements in mind 
    • Test the development build to ensure proper usability and functionality 
    • Showcase products frequently to stakeholders and iterate on provided feedback
  • 4

    Deploy your product

    • Prepare the deployment environment and set up all necessary infrastructure
    • Finalize software configuration and any additional stakeholder requirements
    • Final rounds of testing and quality assurance to guarantee the new product is working as expected before deployment
  • 5

    Support and maintenance

    • Continual maintenance and support of final engagement product 
    • Search for additional iteration opportunities based on stakeholder needs
    • Integrations as new technology opportunities develop, keeping your stack modern and competitive

Our custom software development solutions

  • Enterprise application development

    • Custom web-based solutions 
    • HTML5, CSS3, and responsive web design
    • Improved online presence, customer engagement, and revenue generation
  • Mobile app development

    • Native, hybrid, and cross-platform mobile app development
    • Intuitive user experiences and visually appealing MVPs
    • API integrations for enhanced functionality
  • Cloud-based solutions

    • Extensive expertise with AWS and Azure cloud platforms
    • DevOps engagement for CI/CD pipeline implementation
    • Cost optimization without compromising performance
  • Software integration

    • Seamless integration of custom software development solutions with existing systems
    • Streamlined workflows and communication between applications
    • Enhanced productivity and reduction of manual business operations tasks
  • Legacy system modernization

    • Bring outdated systems into the 21st century with DOOR3 modernization services
    • Offerings from lift-and-shift to full development builds depending on unique business requirements
    • Improved efficiency and business operations
  • Custom CRM and ERP solutions

    • Centralized data storage and organization for data consistency and comprehensive overview while eliminating data silos
    • Robust reporting and data analysis for strategic decision making
    • Increased customer retention and positive user experiences 
  • Ecommerce solutions

    • Secure, user-friendly, and scalable ecommerce platform development
    • Seamless shopping experience and efficient inventory management
    • Integration of order processing and payment systems
  • Data visualization and dashboards

    • Uncover hidden patterns and trends not evident in raw data
    • Real time monitoring capabilities for tracking time sensitive metrics
    • Drive informed decision-making through clear insights and actionable information
  • Portals and intranets

    • Connect employees across teams and locations with improved internal communication facilitation
    • Foster collaboration through a secure digital platform
    • Engage employees at a deeper level with feedback channels and tools that facilitate a sense of community
  • Supply chain and supplier portals

    • Improved supplier collaboration with a centralized business platform 
    • Streamlined procedures for RFQs, managing catalogs, and order placements
    • Integration capabilities with ERPS and SCM systems enabling end-to-end visibility
 When to consider a UX audit 
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A custom software development company delivering excellence to global enterprises

  • AIG
  • Pepsico
  • Ansell
  • Blue Voyant
  • Guy Carpenter
  • COTY
  • Munich
  • Elsevier
  • First-mid
  • johnson and johnson
  • Queens Public
  • Doctors without Borders

Empowering success across industries through custom software development solutions

  • Financial services

    • Develop robust banking software, payment processing systems, and risk management solutions.
    • Streamline financial operations, ensure regulatory compliance, and enhance customer experiences.
  • Insurance

    • Build custom software development solutions for insurance underwriting, claims management, and policy administration.
    • Automate processes, improve accuracy, and enhance customer engagement in the insurance industry.
  • Legal

    • Design custom software for case management, document management, and legal research.
    • Improve efficiency, collaboration, and data security for law firms and legal departments.
  • Startups

    • Provide services for startups across various industries with a custom software development company that understands your growing pains.
    • Help startups transform their ideas into scalable, innovative, and market-ready software solutions.
  • Nonprofit and education

    • Develop custom software solutions for nonprofit organizations and educational institutions.
    • Enhance donor management, student information systems, and online learning platforms.
  • Construction

    • Create construction project management software, resource planning tools, and bidding platforms.
    • Streamline construction processes, improve project visibility, and optimize resource utilization.
  • Consumer and retail

    • Build ecommerce platforms, inventory management systems, and customer loyalty programs.
    • Enhance customer experiences, streamline operations, and drive sales in the retail industry.
  • Healthcare

    • Develop secure healthcare software solutions, including electronic health records (EHR) and telemedicine platforms.
    • Improve patient care, data management, and compliance with industry regulations with DOOR3 as your for hire custom software development agency.
 custom-industries-we-work-with

Deliverables of a custom software development company

  • Custom software product development

    The core deliverable for a custom software development company is the customized software solution itself. We develop the software using industry-standard coding practices, technologies, and frameworks. The end result is a robust and scalable solution that addresses your unique business challenges.

  • Testing and quality assurance reports

    Our team conducts rigorous testing and quality assurance measures to ensure that the software performs consistently and effectively. We outline test cases, test results, and any identified issues or bugs to ensure that the software meets the highest standards of quality.

  • Deployment package

    We assure a smooth deployment process as your custom software development company. This includes setup of the custom software development solution in your production environment.

 Development team

Our elite team of custom software development consultants

We are proud to have a team of highly skilled and experienced custom software development consultants who are dedicated to delivering exceptional solutions to our clients. Our consultants possess a deep understanding of industry best practices, emerging technologies, and business strategies. Meet our talented team:

  •  Michael Montecuollo

    Michael Montecuollo

    Director of Principal Consulting

  •  Alex Asianov

    Alex Asianov

    Founder & President

Partner with a custom software development company unlike the rest

When it comes to selecting the right provider of custom software development services, DOOR3’s proven track record of excellence stands out above the rest. Our numbers speak for themselves, reflecting the outstanding success rates we have achieved for our clients. Here’s why DOOR3 is the trusted choice:

  • +

    years in business

  • +

    successful projects

  • +

    driven and talented professionals

Your questions answered

What is custom software development?

Custom software development is the process of creating software applications tailored specifically to meet the unique needs and requirements of a business or organization. It involves designing, coding, testing, and implementing software solutions that address specific challenges and help achieve desired outcomes.

Why should I choose custom software development over off-the-shelf software?

Working with a custom software development company offers several advantages over out-of-the-box software. It allows you to have full control and ownership of the solution, ensuring it aligns perfectly with your business processes and goals. Custom software can be tailored to your specific requirements, offers better scalability, and provides a competitive advantage by addressing your unique needs.

How long does custom software development usually take?

The duration of the custom software development process varies depending on the complexity and scope of the project. It involves multiple stages, including requirements gathering, design, development, testing, and deployment. The timeline can range from a few weeks to several months or even years, and it is best determined after a discovery phase is conducted.

How much does it cost to build a software custom for my business?

The cost of building a custom software can vary significantly based on several factors:

Project Scope: The complexity and scope of the software project will have a direct impact on the cost.

Development Timeframe: The duration of the development process can affect the cost. Tight deadlines or expedited development may require your custom software development company to provide additional resources which can increase the overall cost.

Technology and Platform: The choice of technology stack and platform can influence the cost.

Maintenance and Support: Regular updates, bug fixes, and technical support may be required post-development, and these costs should be factored into the overall budget.

How do you ensure the security of custom software?

We prioritize the security of our custom software solutions. Our team follows industry best practices and applies robust security measures to protect your data and sensitive information. Contact us to learn more about our security procedures.

What type of custom software development services do you deliver?

At DOOR3, we offer a comprehensive range of custom software development services to cater to diverse business needs. Our services as a custom software development company include:

  • Software Consulting

  • Custom Enterprise Software Development

  • Software Product Development

  • Software Integration

  • Custom Web Software Development

  • Custom CRM Development

  • API Development

How should I select my custom software development company?

Choosing the best custom software development company for your business is a crucial decision. It’s important to define your business objectives and the timeframe to achieve them before looking at options. Referrals and reviews may also be an indicator of a competent custom software development company.

We’re happy to provide you with referrals from previous DOOR3 clients, just Contact us through the form linked.

Let us build your next custom software solution

Door3.com