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Full-scale web applications built to professional engineering standards for Montreal businesses
Five Square Design builds custom web applications for businesses throughout Montreal and Quebec. Whether you're launching a SaaS platform, building an internal business system, or creating a customer-facing web app, our Montreal team delivers professional engineering standards and reliable, scalable solutions.
Unlike simple websites, web applications require robust architecture, secure user authentication, optimized databases, and the ability to handle real user load. We build applications the right way—with clean code, proper testing, security best practices, and scalability from day one.
Our web application development services serve Montreal startups launching digital products, established businesses needing internal systems, companies building SaaS platforms, and organizations requiring custom portals or dashboards.
We work with modern technologies including React, Next.js, Node.js, PostgreSQL, and cloud platforms like Vercel and AWS. All code is written in-house by our Montreal team—no offshore outsourcing, no junior developers on client projects.
Working with a local Montreal team means you work directly with senior developers, get real-time communication in English or French, and benefit from our understanding of the Quebec market and compliance requirements.
Deep dive into your business requirements, user needs, and technical specifications. We'll create detailed user stories, database schemas, and architecture plans before writing any code.
Design the technical architecture including database structure, API design, authentication flow, and third-party integrations. We plan for scalability and security from the start.
Create wireframes and visual designs for all key screens and user flows. You'll see exactly how the application will look and function before development begins.
Build the server-side application, database, APIs, and business logic. We use proven frameworks and follow security best practices for authentication, data protection, and API security.
Develop the user interface using modern frameworks like React. We build responsive, fast interfaces that work beautifully on all devices and browsers.
Comprehensive testing including unit tests, integration tests, and end-to-end testing. We test functionality, security, performance, and user experience across scenarios.
Deploy to production with proper monitoring, error tracking, and backup systems in place. We handle the technical infrastructure and provide documentation and training for your team.
Web application projects typically range from $20,000 to $100,000+ depending on complexity and features.
Most web applications take 3-6 months from kickoff to launch.
• Feature complexity and user workflows
• Number of user roles and permissions
• Database complexity and data relationships
• Third-party integrations required
• Custom reporting and analytics needs
• Payment processing integration
• Real-time features and notifications
Websites primarily display information and content. Web applications have complex functionality, user accounts, data processing, and interactive features. Think of the difference between a company brochure site and something like Airbnb or Shopify—that's a web application.
We use modern, proven technologies including React and Next.js for frontend, Node.js or Python for backend, PostgreSQL or MongoDB for databases, and cloud platforms like Vercel, AWS, or Google Cloud. We choose technologies based on your specific requirements.
Yes! We specialize in API integrations and can connect your web application to existing systems, databases, payment processors, CRMs, and third-party services. We'll assess integration requirements during the planning phase.
We follow security best practices including secure authentication (OAuth, JWT), encrypted data transmission (HTTPS), input validation, SQL injection prevention, XSS protection, and regular security updates. We can also conduct security audits if needed.
Yes. We offer ongoing maintenance, bug fixes, security updates, feature additions, and technical support. Many of our Montreal clients have worked with us for years as their applications grow and evolve.
Let's discuss your Montreal web application project and create a solution that drives real results.
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