Web Application Development Services
Your web application is usually the first — and often the only — thing a customer touches. StellarCode builds web apps that load fast on real-world connections, score well on Core Web Vitals, and are architected to rank: server-side rendering, structured data and clean semantics are part of the build, not an afterthought.
From customer portals and marketplaces to admin dashboards and public websites, we deliver the whole stack: UX, frontend, APIs, database and deployment. React and Next.js are our home ground, backed by PostgreSQL and cloud infrastructure that scales without surprise bills.
What you get
Customer portals & marketplaces
Multi-role platforms with authentication, payments, messaging and search — the machinery of a real online business.
Progressive web apps (PWA)
Installable, offline-capable web apps that behave like native software without the app-store overhead.
Admin dashboards & analytics
Real-time operational dashboards with charts, exports and role-based views that give your team one source of truth.
API design & development
Documented REST and GraphQL APIs that your mobile apps, partners and future systems can build on.
Performance & Core Web Vitals
Sub-2.5s LCP targets, image optimisation, code-splitting and caching strategy — speed engineered in, then measured.
SEO-ready architecture
Server-side rendering, metadata, structured data and sitemaps built in, so the product can be found, not just used.
Technologies we use
- Next.js
- React
- TypeScript
- Node.js
- PostgreSQL
- Supabase
- Tailwind CSS
- Vercel
- AWS
Web Application Development — FAQ
What does it cost to build a web application?
A marketing site with CMS typically starts around $2,000–$5,000. A transactional web app — accounts, payments, dashboards — usually runs $8,000–$40,000. Because StellarCode engineers from Sri Lanka, these figures are commonly 40–70% below US, UK or Gulf agency quotes for identical scope. Every quote is fixed before we start.
Why do you build with Next.js and React?
Next.js gives us server-side rendering for SEO and speed, a huge talent and library ecosystem, and first-class TypeScript support — which keeps long-term maintenance cheap. React remains the most widely supported frontend technology, so you are never locked into a niche stack only one vendor can maintain.
Will my web app work well on mobile devices?
Yes — we design mobile-first. Every build is tested on real phone-sized viewports and slow-network profiles, and where it adds value we ship it as a progressive web app so users can install it from the browser like a native app.
Do you provide hosting and maintenance after launch?
We deploy to infrastructure in your own accounts (Vercel, AWS or similar) so you keep full control, then offer monthly support plans covering monitoring, updates, backups and small improvements. You are never locked in — documentation and handover are part of every project.
Related services
Web Application Development for your market
Start your web application development project
Free consultation, a fixed transparent quote within days, and development starting within one to two weeks — with full code ownership from day one.
Free consultation · Fixed quote within days · Development starts in 1–2 weeks