Custom Web Development
Not every project fits inside WordPress or a CMS. When your business needs something built from scratch, we write it. PHP, Laravel, Node.js, Python, static HTML. Whatever the project requires, we build it.
Bespoke solutions built to your requirements using PHP, Laravel, Node.js or Python. Booking systems, internal tools, portals & dashboards. If it does not exist, we code it.
RESTful & GraphQL APIs that connect your systems, sync data between platforms and your frontend. Clean documentation, authentication and versioning included.
Database architecture designed for your data model. Supabase, MySQL, PostgreSQL or MongoDB. Optimized queries & schema design that scales as you grow.
CMS systems built around your workflow, not the other way around. Admin panels, custom fields, user roles designed for how your team actually manages content.
Existing sites and applications that need fixing, modernizing or rebuilding. We work with any codebase you have, clean it up, add features or rewrite it with a modern stack.
Server setup, deployment and managed hosting for custom applications. Your code runs on infrastructure configured for your stack, not a shared hosting environment.
When your business workflow, customer portal, or product logic cannot fit inside an off-the-shelf CMS, we engineer custom web applications from the ground up. Using modern, maintainable stacks—including PHP, Laravel, Node.js, Python, React.js, Next.js, and PostgreSQL/MySQL—we build fast, secure systems tailored to your exact operational requirements without template constraints. Every custom build starts with a detailed technical specification, fixed price, and milestone schedule.
Every custom software project is architected and coded in-house by our permanent developers in Bangkok—no outsourcing, no freelancers, and no subcontracting. You communicate directly with the engineers building your database schema, REST/GraphQL APIs, and frontend interfaces. We have delivered custom platforms for logistics operators, real estate portals, healthcare providers, financial services, and B2B SaaS products, backed by ongoing application support & maintenance.
Our custom development clients include businesses in Bangkok, across Thailand, Europe, North America and Australia. We work with startups building their first product and established companies replacing legacy systems. Whether you need a new application from scratch, an API layer between two systems or a full rebuild of something that has stopped working properly, we handle it.
Businesses across Thailand and internationally trust our team to build custom web applications. Fixed pricing, clear scope and direct access to the developers 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
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