Kaihatsu Dev — Web Development Studio Based in Malaysia. Built right, the first time.

Web Development Studio Based in Malaysia

開発 — Built right, the first time.

Precision-built websites and digital products for businesses that care about quality.

What We Build

Services engineered for performance and longevity.

  • 01

    Frontend Development

    Pixel-precise, accessible interfaces in React and Next.js. Fast, responsive, and built to your brand — not a template.

  • 02

    Backend Systems

    APIs, databases, and server logic engineered for reliability. Clean architecture that scales as your business grows.

  • 03

    Server-Side Support

    Deployment, infrastructure, and ongoing server-side support. Your stack kept secure, monitored, and online.

  • 04

    Website Care Plans

    Retainer-based maintenance: updates, fixes, backups, and improvements. A developer on call, without the full-time cost.

  • 05

    Performance Optimization

    Core Web Vitals, load times, and bundle size — measured and tuned. Faster sites that rank better and convert more.

  • 06

    Website Migration

    Move off WordPress, Wix, or legacy stacks with zero downtime and no lost SEO. Migrated cleanly to a modern foundation.

Selected Work

A few things built right.

01

Product / Full-Stack

Kai — AI Assistant

A streaming AI assistant that answers questions, qualifies leads, and books work — built on a custom backend with real-time SSE responses.

  • Next.js
  • TypeScript
  • SSE
  • Python
  • LLM
02

Concept / E-Commerce

Studio Commerce

A headless storefront concept: sub-second loads, sharp editorial design, and a checkout tuned for conversion on mobile-first traffic.

  • Next.js
  • Headless CMS
  • Stripe
  • Edge
03

Concept / Marketing

Precision Portfolio

An immersive marketing site with 3D motion, scroll-driven storytelling, and a 95+ Lighthouse score — proof that fast and beautiful coexist.

  • Three.js
  • GSAP
  • Framer Motion
  • Vercel
About

A solo studio built on Japanese-inspired precision.

Kaihatsu Dev is run by Ethan, a web developer based in Selangor, Malaysia. The name — 開発, meaning “development” in Japanese — sets the standard: deliberate, exact, and made to last.

Most websites are assembled. These are engineered. Every component is chosen on purpose, every interaction is intentional, and nothing ships until it is fast, accessible, and built right.

No bloated templates. No corporate filler. Just clean, high-performance work from a developer who treats your project like a product — because that’s what it is.

Meet Kai

Always on.
Always ready.

Kai is the studio’s AI assistant. Ask about services, get a ballpark quote, or check availability — any time, no waiting. When it’s time to talk specifics, Kai hands you straight to Ethan.

Kai

Online

Do you build e-commerce sites?
Yes — headless storefronts, fast checkout, the works. Want a rough quote?
How fast can you start?
Usually within a week. Tell me about your project and I'll line it up.
Start a Project

Let’s build something.

Tell me about your project. I’ll get back to you within 24 hours.

Instagram
@kaihatsu_dev
Based in
Selangor, Malaysia