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React, Next.js & TypeScript front ends
Fast, accessible application interfaces in React and Next.js with strict TypeScript — rendered on the server where it matters, typed against the API behind them.
Outcome: Interfaces people use quickly — and developers change safely.
This is the interface layer of a web application: the screens, forms and data views people work in every day, built as typed React components in Next.js or Vite and connected to a real API. Server rendering is used where it shortens the first view; client code stays in the parts that need interaction.
It fits when the back end works but the interface is slow to load and respond, when a front end has grown without structure and every change breaks something, or when a design is ready and needs to be built properly. Public sites and their search metadata belong to websites & technical SEO.
Typical needs
- A slow or fragile front end that nobody wants to touch
- A finished design that still has to become working, accessible screens
- A move to Next.js, TypeScript or a shared component library
What you receive
- Typed, component-based interface code that is safe to change
- Performance and accessibility measured, not assumed
- Forms, tables and filters that handle loading, empty and error states
Approach
How the work runs.
- 01
Screens, roles and states
Every screen is listed with who uses it, what data it needs and how it behaves while loading, when empty and when something fails. Fragile interfaces usually break in exactly these states.
- 02
Components typed against the data
A small set of shared components is built with props that follow the API types, so a renamed field fails the type check instead of a user’s screen.
- 03
What renders where
Server and browser work is split route by route: with Next.js, lists and detail pages can arrive as HTML, and JavaScript ships only for filters, editors and dialogs.
- 04
Check it in a real browser
Keyboard paths, labels, focus and contrast are checked on real screens, together with the time until a page is usable on a mid-range phone — before release and again after later changes.
Technologies
- React
- Next.js
- TypeScript
- Tailwind CSS
- Vite
The engineer who does this work is the founder, Filip Volf — you work with him directly.
Questions
About this service.
Do you only build with Next.js?
No. Next.js suits pages that benefit from server rendering and routing — this website is built with it. An application behind a sign-in is often simpler as React with Vite, which is how Pametni Advokat’s interface is built. Both use the same TypeScript and component approach.
Do we need a finished design before you start?
Not necessarily. For internal tools and admin screens, a shared component set and clear flows are often enough. When the product itself is still being defined — what it does, for whom and in what order — that is product & UX/UI design work, and it comes first.
How is this different from websites & technical SEO?
Front ends here are application interfaces: screens behind a sign-in, forms, dashboards and data views, including their translated labels, dates and number formats. Websites & technical SEO covers public pages that need to be found — multilingual routing, metadata and structured data. Many products need both, often in the same Next.js codebase.
Related services
- 02
Product & UX/UI design
Outcome: A product shaped around the real work — agreed before the build begins.
- 04
Websites & technical SEO
Outcome: One consistent story for people, search engines and AI tools.
- 05
APIs, backend architecture & PostgreSQL
Outcome: Business rules enforced once, where the data lives.
Next step
Let’s talk about what you’re building.
Describe what you need built or fixed, how the work runs today and the constraints. You get clarifying questions or a first outline of the approach — by email, in English or Serbian.