Frontend Web Development
We build interfaces that load fast and that work on every Device. React, Next.js, TypeScript and modern CSS, written by engineers who care about the details.
Component-based interfaces built with React. SPAs, dashboards, portals and interactive applications with clean state management and a codebase that scales as your product grows.
Server-rendered and statically generated applications on Next.js. SEO-ready pages, API routes, fast load times and full-stack React in a single framework. Built for performance from the start.
Web applications that behave like native apps. Offline support, push notifications, install prompts and app-like navigation. One codebase that works across mobile and desktop without an app store.
Pixel-accurate, mobile-first layouts built with modern CSS and component frameworks. Consistent rendering across browsers, smooth animations and accessible markup that meets WCAG standards.
Migrating outdated frontends from jQuery, Angular 1, or server-rendered templates to React or Next.js. Your application gets a modern stack that current developers can work with and extend.
Architecture reviews, framework selection, performance audits and team onboarding for frontend projects. Practical advice based on real build experience, not theoretical recommendations.
A slow or clunky interface loses users regardless of what is behind it. We focus on the layer your customers interact with. React, Next.js, TypeScript, modern CSS and build tooling configured for speed. We build frontends for marketing sites, web applications, SaaS platforms, ecommerce stores and enterprise dashboards. Every project gets a clear scope, a fixed price and a delivery timeline. No hourly billing, no open-ended contracts.
Every frontend project is handled by our permanent engineers in Bangkok. Each build gets a dedicated contact who manages the project from architecture decisions through deployment. We have built frontends for fintech platforms, logistics dashboards, healthcare portals, ecommerce brands and internal enterprise tools. Same attention to performance and code quality on every project regardless of size.
Our frontend clients include companies in Bangkok, across Thailand and internationally. We work with startups building their first product and established companies replacing legacy frontends that no longer perform. Whether you need a new React application, a Next.js migration, a PWA or a frontend audit, we write production-ready code and we deliver on time.
Companies across Thailand and internationally trust our team to build their frontends. Fixed pricing, clear scope and direct access to the engineers writing the code. Based in Bangkok.
Sierra IT Group Co., Ltd.
99 Soi Thian Thale 28,
Bangkhuntian Chailtalay Road,
Tha Kham, Bang Khun Thian
Bangkok 10150
2018 – 2026 Sierra IT Group Co., Ltd. | Sitemap | Privacy Policy