React

React & Next.js Application Development

We build fast, scalable web applications using the latest React technology.

Recognize these problems?

Most companies struggle with the same challenges. We know how to solve them.

Legacy web app is slow and hard to maintain

App written years ago in jQuery or PHP runs slower, and every change takes weeks. Developers avoid it because the code is unreadable.

Lack of responsiveness and poor UX

Clients and employees use phones, but your app doesn't work on mobile. Interface is outdated, forms are long, navigation is unintuitive.

No Google visibility (SEO)

Your SPA renders client-side, so Google can't see the content. You lose organic traffic that could bring customers without paying for ads.

What can we automate?

Flows we build and run in production.

Client portal with data access

Dedicated portal where clients log in, place orders, track statuses, download invoices, and communicate with support. Everything in one place.

Analytics dashboard for management

Interactive dashboard with KPI, sales, finance charts. Live data from multiple sources. Filtering, drill-down, PDF export. Accessible from any device.

SaaS application with subscriptions

Complete SaaS application: registration, pricing plans, Stripe payments, admin panel, integration API. Ready to scale from 10 to 10,000 users.

Why ITEON?

We are not a typical software house. We understand the problem first, then build the solution.

Financial-sector standards

Experience gained on projects for PKO Bank Polski, BFG, Generali and Compensa VIG. The same security standards in every project.

Fast rollout

First results in 1-2 weeks. An MVP approach: we start with what delivers the most value.

Development after rollout

We maintain and develop the system we built: monitoring, training and further changes under contract.

Advisory, not just coding

We analyze your problem first. Often a simple solution beats an expensive rollout.

How we work together

A proven process that minimizes risk and maximizes value.

Analysis

Free intro call. We learn your processes, identify bottlenecks and automation opportunities.

Prototype

In 1-2 weeks we build a working prototype. You see results before committing to a full rollout.

Rollout

We deploy a production solution with tests, documentation and training for your team.

Evolution

We monitor, optimize and develop the solution we deployed.

Frequently asked questions

Why React and Next.js, not other technologies?

React is the most popular framework for building web interfaces, with a huge ecosystem of tools and components. Next.js adds server-side rendering (better SEO and loading speed), built-in routing, and optimization. It's a mature, proven technology, which also makes it easier to find developers for project maintenance.

How much does a React/Next.js application cost?

Cost depends on scope: a simple app (landing page, form, CMS), a client portal or dashboard, and a full SaaS application are three different budgets. We start with MVP and iterate, then set the exact quote after discussing your requirements.

Can you modernize an existing app to React?

Yes. We migrate from jQuery, Angular, PHP (Blade/Twig) to React/Next.js. We can migrate gradually (module by module) or rewrite entirely. We analyze which approach is cost-optimal.