Web Applications
Robust web applications with complex features, built to scale.
What's included
Web applications developed by ISIO are built to solve specific business problems — from internal dashboards and SaaS platforms to order management systems and client portals. We use a full-stack TypeScript architecture that ensures type safety from database to interface, eliminating an entire category of bugs during the development phase.
The development process starts with an in-depth analysis of existing workflows and friction points. We map every user journey, identify repetitive operations that can be automated, and design the database architecture before writing the first line of code. We use PostgreSQL with Drizzle ORM for type-safe queries, and APIs are built as REST endpoints with Zod validation on every request and response.
Security is integrated into every layer of the application: authentication with JWT and refresh token rotation, role-based access control (RBAC), CSRF protection, rate limiting on public endpoints, and encryption of sensitive data at-rest and in-transit. CI/CD configuration with GitHub Actions ensures every commit passes automated tests, type checking, and linting before reaching production.
- Full-stack TypeScript architecture
- User authentication and authorization
- Optimized PostgreSQL database
- REST or GraphQL API
- Custom admin dashboard
- Third-party integrations (payments, email, etc.)
What you get
At handover you receive the deployed and functional application, the complete source code in a Git repository, API documentation generated from code (with request/response examples for each endpoint), and a dashboard administration guide. The CI/CD pipeline is configured so that any update pushed to the main branch automatically deploys to production after passing all tests.
- Deployed functional application
- Complete API documentation
- Configured CI/CD pipeline
- 60 days post-launch support
Development process
Web application development at ISIO follows a structured methodology that minimizes risk and maximizes transparency. We start with an extended discovery phase where we analyze existing workflows, identify bottlenecks, and define the technical specifications for each module. The result is a specification document with user stories, database schema, and API architecture — approved by you before development begins.
Development proceeds in 1-2 week sprints, each sprint having demonstrable deliverables. At the end of each sprint you receive a staging link where you can test new features and provide direct feedback. This iterative approach means problems are identified and resolved early, not at the end of the project when correction costs are much higher.
Every feature is covered by automated tests that run on each commit. Production monitoring includes automatic error alerts, performance metrics, and daily database backups. The 60-day post-launch support covers both bugs and workflow adjustments if users report difficulties using the application.
Turnaround time
30-60 days
Frequently asked questions
What is the difference between a website and a web application?
A website presents information and is largely static — visitors read content, fill in forms, and navigate between pages. A web application allows complex interaction: users authenticate, manage data, execute operations, and receive real-time responses. Typical web application examples: analytics dashboards, e-commerce platforms with inventory management, CRM systems, or internal company portals.
Can the application integrate with existing systems?
Yes. We build applications with modular architecture that integrate via REST APIs with any external system — payments (Stripe, Netopia), email (Resend, SendGrid), file storage (Cloudflare R2, AWS S3), authentication services (OAuth, SAML), or existing ERPs and CRMs. During the discovery phase we document each required integration and validate API availability.
How do you handle data security?
We apply the zero-trust principle: every request is independently authenticated and authorized, sensitive data is encrypted both in transit (TLS 1.3) and at rest (AES-256), and database access is restricted through row-level security. We perform code review on every pull request, run automated security tests in CI, and document all security measures in a Security Disclosure that you receive at handover.
How much does web application development cost?
The cost depends on application complexity. An MVP (Minimum Viable Product) with authentication, a dashboard, and 3-5 core features typically fits within the Standard or Premium package on the pricing page. During the free discovery phase we analyze requirements and provide a detailed estimate by feature, with transparent per-stage timeline and cost.
Can I migrate an existing application to a modern stack?
Yes, ISIO offers migration and modernization services for existing web applications. I analyze the current architecture, identify components that can be reused, and propose a gradual migration plan that minimizes risk and downtime. Migration is done modularly — we replace components one by one, test each step, and keep the application functional throughout the process. This approach is safer than a complete rewrite and allows shipping visible improvements at each sprint.
Ready to get started?
Choose the right plan or schedule a free consultation.