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Custom Web Application Development

We build web applications that solve specific business problems: CRM systems, SaaS platforms, operations dashboards, client portals, and internal tools. No off-the-shelf templates — architecture designed around your requirements.

Our frontend stack is built on React and Next.js, our backend on .NET 8. We manage the full cycle from early wireframes in Figma through production deployment and ongoing maintenance.

What We Build

SaaS Platforms

Multi-tenant auth, subscription management, onboarding flows, and usage metering. Built to scale horizontally without rewriting the architecture.

CRM and Operations Systems

Custom client management, ticketing, pipelines, communication logs, and analytics. Replaces bloated generic tools with a purpose-built solution.

Admin Panels and Dashboards

Internal operations tooling with real-time data, role management, and audit logs. Easy to use for your team, complex under the hood.

Client Portals and B2B Platforms

Secure environments for clients and partners. Document uploads, order statuses, invoicing, and communication flows.

Marketplaces and E-commerce

Buyer and seller listings, catalog management, carts, checkout, and payments. Integrations with Stripe, WayForPay, and other payment APIs.

Our Stack

  • React
  • Next.js
  • TypeScript
  • SCSS Modules
  • .NET 8
  • PostgreSQL
  • MongoDB
  • Redis
  • REST API
  • Netlify
  • Vercel
  • AWS
  • GitHub Actions
  • Figma

Why Codevia

  • Ukrainian Team, International Delivery

    We deliver for clients across Europe and the US from UTC+2/UTC+3. Transparent communication, honest estimates, and no inflated markup from intermediaries.

  • Design to Deployment

    Design, frontend, backend, DevOps — all inside one team. No friction between agencies. One owner of accountability for the entire product.

  • Maintainability by Default

    We write code your future developers will be able to read and extend. Strict code review, documented architecture, and clear conventions throughout.

Frequently Asked Questions

A website primarily delivers content. A web application handles user-specific data, authentication, complex business logic, and real-time interactions. Examples: a CRM, an internal dashboard, a SaaS platform, or a booking system. These require a backend API, database design, and more rigorous architecture than a marketing site.
Next.js is our default for applications that need SEO, fast initial load, and server-side data fetching. For internal tools and dashboards that don't need public indexing and are used behind authentication, a React SPA with Vite is often simpler and faster to develop.
Yes. We have a design workflow that produces Figma screens before development starts. This prevents costly rework mid-development. We can work from your existing design or create one from scratch following your brand guidelines.
Frontend apps are deployed to Netlify or Vercel for simplicity and global CDN. Backend APIs go on AWS (EC2, ECS, Lambda) or Azure depending on client requirements. We set up CI/CD pipelines with GitHub Actions for automated builds and deployments.
Yes. We assess the existing system, identify what can be preserved, and plan a migration that keeps the business running during the transition. We avoid big-bang rewrites in favor of incremental module replacement.

Have a web application idea?

Describe your use case and we will propose an appropriate technology stack and preliminary estimate.

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