hello@mazharsiddiqi.com

WEB APPLICATION DEVELOPMENT

Web application development.

Custom React and Next.js applications for dashboards, marketplaces, portals, and internal tools that a website builder cannot handle.

WEBSITE OR APPLICATION?

The line changes the whole build.

A website presents information. A web application does something with it: users log in, data changes, state persists, and the interface responds to what is happening rather than showing fixed pages.

That distinction decides the platform, scope, architecture, and timeline. Treating an application like a website is how projects end up rebuilt eighteen months later.

01

A website

Presents information and guides someone toward an action.

  • Content changes in a CMS
  • Mostly fixed pages
  • Usually a WordPress, Webflow, or Shopify job
  • Often ready in weeks
02

A web application

Does work for the person using it, and changes with their data.

  • Users sign in and have permissions
  • Data persists and changes
  • Business logic runs behind the interface
  • Needs custom engineering from the start

If you are not sure which side yours falls on, describe what users do once they are logged in. That answer usually settles it.

WHAT I BUILD

Products people use to get work done.

Applications are shaped around actions, data, and decisions rather than pages that simply need to look good.

Dashboards & analytics interfaces

Data-heavy views with filtering, visualisation, and exports that stay useful as the dataset grows.

Marketplaces & platforms

Two-sided products with distinct user types, listings, matching, messaging, and payment flows.

Customer portals

Authenticated areas where clients reach their data, documents, invoices, or live account state.

Internal tools

Operational software that makes a team faster, even when nobody outside the business ever sees it.

Booking & scheduling systems

Availability, calendar logic, notifications, and the time-zone edge cases that make scheduling harder than it looks.

Progressive web applications

Installable, offline-capable products for cases where a native app is not yet justified.

THE STACK

Built on React and Next.js.

A focused production stack for applications that need maintainable interfaces, dependable logic, and a clean handover.

Interface

Clear product interfaces that remain understandable as new screens and users are added.

  • React
  • TypeScript
  • Tailwind CSS
  • Component architecture
  • State management
  • Responsive interfaces

Application

The public-facing delivery layer when routing, server rendering, or SEO adds real value.

  • Next.js
  • Server rendering
  • Route handling
  • Server actions
  • Code splitting
  • Caching strategy

Backend

Business logic, authentication, APIs, and jobs built as part of one coherent product.

  • Node.js
  • NestJS
  • REST APIs
  • Role permissions
  • Background jobs
  • Error handling

Data

A data model that supports the product today without making normal future changes a migration project.

  • PostgreSQL
  • MongoDB
  • Database design
  • Migrations
  • Query indexing
  • Access control

Integrations

Reliable connections to the services the application needs to work alongside.

  • Stripe
  • OAuth
  • Webhooks
  • Email services
  • Storage
  • Third-party APIs

Delivery

A visible process and a handover another developer can confidently take over.

  • Git workflow
  • Automated testing
  • CI/CD
  • Staging
  • Deployment
  • Documentation

Next.js is used where it adds value. A purely internal tool does not need extra complexity just because it is fashionable.

WHAT'S INCLUDED

The whole application, not only the interface.

Every build is scoped from the decisions that affect the product after launch, not just the screens visible in a prototype.

01

Technical scoping

Architecture, data model, risks, and an honest timeline before any code is committed.

02

UI/UX design

Product flows and interface design, or faithful implementation of approved designs you already have.

03

Front end, backend & database

The complete application rather than an interface waiting for somebody else to make it work.

04

Authentication & permissions

Accounts, roles, and server-side access rules that reflect the way the product actually operates.

05

Third-party integrations

Payments, email, storage, analytics, and the services your product needs to connect with.

06

Testing, deployment & handover

The release process, environments, documentation, and code ownership your team needs next.

PERFORMANCE

Built to stay fast as data grows.

Applications degrade differently from websites. A site is slow on day one or it is not. An application can feel fast in testing with fifty records and become unusable with fifty thousand.

Pagination, virtualised lists, indexed queries, code splitting, and cache decisions are built in while they are inexpensive. Retrofitting them after users are waiting is not.

“Performance is a design decision made before the data arrives.”

Developer reviewing application code

COMMON QUESTIONS

Clear before the first commit.

The practical technical and commercial questions to settle before a web application starts.

How long does a web application take?

A focused first version is typically eight to fourteen weeks. Multiple user types, complex permissions, and heavy integrations take longer.

Can you work on an existing application?

Yes. I can add features, improve performance, and refactor a product while following the conventions that already serve the team.

Do you build the backend too?

Yes. The interface, APIs, database, and business logic are scoped as one application build.

React or Next.js: which will you use?

Whichever earns its place. Public-facing applications commonly benefit from Next.js; internal tools do not always need the extra layer.

Can you integrate with our existing systems?

Yes, where the system exposes an API or database access. Integration risk is assessed before quoting because it is where estimates often go wrong.

Who owns the code?

You do, entirely, on final payment. The handover includes the repository, environments, documentation, and credentials.

Have an application to build?

Describe what users do inside it. You will get a fixed price, a realistic timeline, and an honest view of the technical risks.

React & Next.jsFull-stack deliveryClean handover