Custom Web App Development — React, Next.js & Node.js

We build customer-facing web apps, internal tools and dashboards, data platforms, marketplaces, workflow automation tools, admin panels, and complex data visualization applications. If it runs in a browser and needs a real backend, we build it.

We default to Next.js 14 (App Router) with TypeScript, Tailwind CSS for the frontend, Node.js or Python for backend APIs, and PostgreSQL for the database. Deployed on Vercel or AWS. That said, we adapt to your existing stack if needed.

Yes. Real-time features are a Zenkoders specialty. We use WebSockets, Server-Sent Events, or Supabase Realtime depending on the use case. We have built real-time dashboards, live collaboration tools, and streaming data interfaces.

We use battle-tested auth providers (Clerk, Auth0, NextAuth) and never roll our own crypto. Every project includes HTTPS, CSRF protection, input validation, parameterized queries, rate limiting, and regular dependency audits. Security is a process, not a checkbox.

A focused web app takes 6–10 weeks. A complex platform with multiple user roles, real-time features, and third-party integrations takes 12–20 weeks. We give you a precise timeline after a scoping session.

Yes. Most web app projects include a REST API (or GraphQL for complex data relationships) that serves the frontend and is documented for any future integrations you might need.