Build · Web apps

Web Application Development

We build full-stack web applications and APIs — React/Next.js front ends on Node, FastAPI, Spring Boot or .NET back ends — and ship regression tests with every feature, because we came from QA before we wrote a line of product.

What we build
  • 01

    Front end

    Fast, accessible React/Next.js interfaces built to real Web Vitals and accessibility standards — not just a demo that looks right on one machine.

  • 02

    APIs & back end

    Typed, tested services on Node, FastAPI, Spring Boot or .NET, with the auth, validation and error handling that survive real traffic.

  • 03

    Tests shipped with features

    Every feature lands with regression and end-to-end coverage, so the next change doesn't quietly break the last one.

Stack
ReactNext.jsNode.jsFastAPI.NET
FAQ

Web app development, answered

What stacks do you work in?

React/Next.js on the front end; Node, FastAPI, Spring Boot or .NET on the back end. We meet your stack rather than forcing ours.

Can you fix or extend an existing app?

Yes. We often start by adding test coverage to what's there, then build on a base that's safe to change.

Is testing included?

Always — functional, regression and end-to-end coverage ship with the work. It's the practice we're named for.

Get a free audit

Ship the next release without holding your breath.

Tell us what you're building — or what's breaking. We reply within one business day with a concrete plan, not a sales deck.

Or, the direct route
contact@qatestingplus.com
Replies from a human, not a CRM.

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