Techrays Labs

Technology / React.js

ReactJS development company

Fast, accessible front ends and SaaS dashboards in React and Next.js, delivered at a fixed price and date by senior engineers working AI-first.

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(01) What we build

What we build with React.

  • SaaS dashboards

    Data-heavy admin and analytics screens with tables, filters and charts that stay quick with thousands of rows.

  • Customer portals

    Authenticated self-service areas for accounts, invoices, documents and support, wired to your existing APIs.

  • Marketing and product sites

    Server-rendered Next.js pages that load fast and index well, with content your team can edit.

  • Fintech front ends

    Onboarding, KYC steps, payment flows and ledgers with strict validation and a clear audit trail behind every action.

  • Design systems

    Typed, documented component libraries so every new screen is assembled rather than rebuilt.

  • Legacy front-end migrations

    Move jQuery, AngularJS or server-templated screens to React one route at a time, without a big-bang rewrite.

(02) Why Techrays

Fixed price, AI-augmented, yours.

  • Fixed price, fixed date

    A React build is scoped screen by screen, so the proposal lists what is in and what is out. The price and delivery date stay put unless you change the scope, and any change is quoted before we touch it.

  • AI for the repetitive parts

    Component scaffolding, test stubs and documentation are drafted with AI help, then edited by an engineer. The time saved goes into state management, accessibility and performance, which is where React projects usually go wrong.

  • Plain open source

    React, Next.js and the libraries around them are open source, and we avoid proprietary UI kits that would tie you to a vendor. The repository, the build pipeline and the hosting setup are handed to you in full.

(03) Ecosystem

The React ecosystem we use.

  • React
  • Next.js
  • TypeScript
  • Tailwind CSS
  • Redux Toolkit
  • TanStack Query
  • React Hook Form
  • Zod
  • Storybook
  • Jest
  • Playwright
  • Vite

(04) Process

From scope to launch.

  1. DAYS 1–3

    01

    Scope and rendering plan

    We decide where Next.js server rendering helps and agree the pages, data sources and performance targets.

  2. WEEK 1

    02

    Design system

    Reusable components and design tokens in Storybook, so screens are assembled instead of rebuilt.

  3. WEEKS 2–5

    03

    Build and test

    TypeScript React with component and Playwright tests, and bundle size checked on every pull request.

  4. WEEK 6+

    04

    Launch

    Core Web Vitals and accessibility checked before go-live, then monitored in production.

(05) Related

Keep exploring.

Want proof first? See the products we have shipped.

(06) FAQ

Questions, answered.

Why React rather than Vue or Angular?

React has the largest hiring pool and ecosystem, and Next.js adds server rendering and routing on top. We also build in Vue.js and Angular, and we will recommend whichever fits your team and product.

Do you build with TypeScript?

Yes, by default. Types catch integration mistakes early and make later changes cheaper, so every new React project we start is TypeScript.

Can you take over an existing React codebase?

Yes. We start with a short audit of structure, dependencies, test coverage and performance, then agree a fixed scope for the fixes or new features.

How do you keep React apps fast and accessible?

We set performance budgets and accessibility checks (WCAG 2.2 AA is the target) in the build pipeline, test with keyboard and screen readers, and review bundle size on every release.

Do you use Next.js or plain React?

It depends on the product. Next.js suits marketing sites, content and anything that needs search visibility, because pages can be rendered on the server. A logged-in dashboard behind a sign-in often works fine as a plain React single-page app. We explain the trade-off in the proposal.

How do you manage state in large React apps?

We keep server data in a query library and keep local interface state close to the component that owns it. A global store is added only when several distant screens genuinely share state. That keeps the code easy to follow and easier to test.

Can you take over a React codebase that another team wrote?

Yes. We start with a short review of structure, dependencies, test coverage and build times, and report what is worth keeping. You then choose between steady improvements alongside new features or a staged rewrite of the weakest areas.

How do you handle accessibility and browser support?

Accessibility is checked while screens are built, using semantic markup, keyboard testing and automated checks, with WCAG 2.2 AA as the target. Browser support is agreed up front, so nobody discovers late that an older device was expected to work.

Related reading

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