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Hello, Im |

Motivated Full Stack Developer, I am delivering scalable web applications and innovative solutions.

What i do

Frontend Development

HTML
100%
CSS
100%
Javascript
100%
Typescript
100%
React.js
100%
Next.js
100%
Gatsby
100%
Angular
100%
Vue
100%
Material UI (mui)
100%
Tailwind CSS
100%
SCSS
100%
Bootstrap
100%
Redux
100%
Lodash
100%
Building complex, interactive user interfaces using React and Next.js.
Building Large scale Web applications using state management library such as redux.
Building Progressive Web Applications (PWAs) using Gatsby and Next.js.
Building responsive Web Applications.

Backend Development

Node.js
100%
Express (Node.js Framework)
100%
Nestjs
100%
Python
100%
Django
100%
AI
100%
C++
100%
REST Api
100%
Graphql
100%
Prisma
100%
Sequelize
100%
PostgreSQL
100%
MySQL
100%
Mongodb
100%
AWS
80%
Github
100%
Bitbucket
100%
Docker
100%
Heroku
100%
Vercel
100%
Worked with various Node.js modules and libraries, such as NestJs/Express and Django to develop full-stack applications.
Building RESTful APIs, RPC APIs and GraphQL APIs.
good understanding of database design in technologies such as PostgreSQL and MySQL.
Worked with various ORM libraries such as Prisma and Sequelize.

Blockchain Development

Blockchain (bitcoin, ethereum, solana, etc)
100%
Rust
100%
Python
100%
Golang
100%
C++
100%
Building DEX, DAO, NFT marketplaces, Smart Contract development, tradingbot etc
Building blockchain applications using Rust, Solidity, Golang etc
good understanding of blockchain technology and ecosystem.

What Clients Say

I had the pleasure of working with Ryotaro, and I can confidently say he delivered excellent results. He successfully converted our Figma designs into clean, responsive React components with TailwindCSS. His attention to detail ensured that the final implementation matched the designs perfectly. Communication was smooth, and he showed a strong understanding of both front-end development and best practices. Thanks to his contribution, the project’s success increased significantly. I highly recommend him to anyone looking for a reliable and skilled React/Tailwind developer.

⭐⭐⭐⭐⭐

Anonymous client

Recent Works

  • All
  • Full Stack
  • Blockchain
Music Creating Platform With AI Technology

Music Creating Platform With AI Technology

AI Music Composer and AI Voice Changer. 1000+ AI Voices. AI Voice Cloning. Lyrics to Song. High Speed based on #1 Leading AI Technology. It built by BigAI, Next.js Node, NestJs, PostgreSQL

Social Football Betting Website

Social Football Betting Website

Footy Amigo™ helps thousands of football bettors and traders make smarter and well informed data-driven betting decisions on a daily basis. It built by Nuxt(Vue), Node, Express, Mongodb

Transform your dispatch and upgrade your logistics services

Transform your dispatch and upgrade your logistics services

Selecting partners who align with your business goals is crucial. From suppliers to service providers, you should make choices that propel your success.

Donation Saas Platform

Donation Saas Platform

Providing a collective and measured response for those who have suffered and lost everything through natural disasters, calamities, conflict or other misfortunes . It had been built with highly customizable using Next Js, Nestjs, MUI, Mongodb, Graphql.

KMG Betting

KMG Betting

This is sports betting website which is built by using Next, Java, Ethereum, Payment gateways etc

SYMBIOGENESIS

SYMBIOGENESIS

A completely new form of NFT-based entertainment, where 10,000 collectible artworks meet real game utility.

Management System

Management System

This is software company management system and built with Next, Laravel, Mysql, MUI, Tailwindcss

Long Story Short

Long Story Short

Long Story Short is a private shopping club with membership dues of $1,000 per month. Our goal is to advance luxury retail in the way that is most likely to benefit consumers, unconstrained by a need to generate ecommerce profit margins.

Thank you for reviewing my portfolio!I'm looking forward to hearing from you!

© 2025 Ryotaro Kato