Web Development.

Fast, scalable front-ends and back-ends built for speed, responsiveness and long-term maintenance.

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Custom web application built by Devzel in Next.js and React shown on desktop

Service details

Service:
Web & Product Development
Focus:
Web Apps, Marketing Sites, Integrations
Industries:
SaaS / E-commerce / Startups
Role:
Architecture, Front-end, Back-end & QA

About the service

Products that stay fast under load and stay cheap to change a year from now.

Every build uses tooling you can hire for. React, Next.js, TypeScript, Postgres, because the handover matters as much as the launch. There is no proprietary layer, no bespoke framework to learn, and no clause that makes you depend on us to keep shipping.

Structure comes first: a clear component model, typed boundaries between modules and a data layer that matches how the product actually reads and writes. That is what keeps a codebase quick to extend once the second and third rounds of features arrive, instead of slowing to a crawl at the exact point the business speeds up.

Web application dashboard interface built with React and Next.js
Component library and design tokens used across a Devzel product build

Our approach

From architecture decisions to a codebase you can maintain

We map the data, the states and the integrations before writing features, so the shape of the system matches the shape of the problem. Edge cases, empty states, failures, permissions, rate limits, get decided up front rather than patched in after launch.

The build then ships in reviewable slices, each one deployed and testable on its own. Performance budgets, accessibility and error handling are written as the code goes in, not left for a cleanup pass that never gets scheduled.

Finished web product built by Devzel shown across devices

The outcome

A product that loads fast and keeps shipping after launch.

Pages render quickly on real devices and real connections, and the interface stays responsive as the data grows. Core flows are covered by tests, so regressions surface in CI rather than in a customer's support ticket.

You get a documented codebase, a clean deployment pipeline and full ownership of everything in it, so whoever builds the next feature, in-house or otherwise, can start on day one instead of spending a month reverse-engineering the last team's work.

What's included

What a development engagement covers

  • Front-end development in React and Next.js
  • Back-end APIs and database design
  • Third-party and payment integrations
  • Headless CMS setup
  • Core Web Vitals and performance work
  • Testing, deployment and ongoing support

FAQ

Web Development questions, answered

Still unsure about something? Ask us directly, we answer every message ourselves.

  • What tech stack do you build with?

    React and Next.js on the front end, TypeScript throughout, Postgres or Supabase for data, and Vercel or AWS for hosting. Everything is mainstream and widely documented, so you can hire for it anywhere rather than being tied to one agency's preferences.

  • Who owns the code you write?

    You do, completely, from the first commit. Repositories live in your organisation, hosting and third-party accounts are in your name, and there is no licence, retainer or proprietary dependency required to keep the product running.

  • How do you make sure the site is fast?

    Performance budgets are set before the build starts and checked on every deploy. That means server rendering where it helps, images and fonts optimised at build time, minimal client JavaScript, and Core Web Vitals measured on real devices rather than a lab score alone.

  • How long does a custom web build take?

    A marketing site typically takes three to five weeks once design is settled. A web application depends on how many flows and integrations it has, but a usable first version generally lands in eight to twelve weeks, deployed and testable throughout.

  • Do you maintain the site after launch?

    Yes. Ongoing maintenance, dependency updates, monitoring and new feature work continue under the same flat monthly plan. You can also take the codebase in-house at any point, the documentation is written assuming you will.

Interested in working together?

Tell us what you're building. We'll come back with a plan, a timeline and a price, usually within two days.