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Welcome

I'm Atsuo Koizumi.

Senior Full Stack Engineer

Atsuo Koizumi

Senior Full Stack Engineer

Senior Full Stack Engineer with over 6 years of experience in developing scalable, high-performance applications across both front-end and back-end technologies. Expertise in React.js, Next.js, TypeScript, and back-end technologies like Node.js, Express, and Django. Skilled in RESTful APIs, GraphQL, database management, and CI/CD pipelines. Adept at designing robust and modular system architectures that support the rapid scaling of applications. Proven ability to lead teams, mentor junior developers, and collaborate effectively with cross-functional teams to deliver comprehensive software solutions. Committed to delivering clean, maintainable code and optimizing system performance.

  • Lives In: Nagoya, Japan
  • Age: 26
  • Gender: Male
Read CV

My Skills

Languages

HTML/CSS/SCSS/Javascript
100%
Typescript
100%
PHP
100%
Solidity
95%
Golang
90%
Python
85%

Frontend Frameworks & Libraries

React/Redux
100%
Next.js
100%
Vue.js/Nuxt.js
100%
Angular
95%
MUI
100%
Tailwind CSS
100%
Bootstrap
98%

Backend Frameworks

Node.js/Express.js
100%
Nest.js
97%
Django
95%
Gin
95%

Databases

MongoDB
100%
MySQL
97%
PosgreSQL
95%
Redis
95%

Education

  • 2016 - 2020
    Computer Science
    Nagoya University

Experience

  • 06/2024 - Present
    Freelance Full Stack Engineer
  • 06/2022 - 06/2024
    Senior Full Stack Engineer
    GreatDealCoin
  • 06/2021 - 06/2022
    Full Stack Engineer
    Utopia Tech PTY LTD
  • 05/2019 - 06/2021
    Full Stack Developer
    Hinata Online Officiel
Service

What can i do?

Web Design

I can design websites using Figma and AdobeXD.

Blockchain

I can develop any kind of smart contracts.

Web Development

I can build Saas, CRM and Dapps.

UI/UX Design

I can design websites using Figma and AdobeXD.

10+

Clients

20+

Project Complete

0

Project Ongoing

20+

Client Satisfaction
Portfolio

See my work

Toesmith

E-Commerce platform

Equitise

Crowdfunding platform

Hinata NFT

NFT marketplace

Walter INU

Token Introduction Website

Trendingo

Web3 Service Platform

NEYX

NFT minting platform

What Clients are Saying

It was so refreshing to come across such a smart and honest worker. Atsuo has tremendous communication skills, he is very knowledgeable in his field and he is a hard worker with a genuine interest to solve problems and find answers. I strongly recommend him for other projects and I very much look forward to working with him again in the near future.
Aaron Tot
CEO at Utopia
Really great developer which works very vast and secure. Highly recommend him!
Leon Ware
CEO at Riverina
As the first time I worked with Atsuo, the job was perfectly done in time. Great front end developper able to create super specific UI elements. Atsuo is taking careof all the reviews feedback and fine tune the project. Highly recommended if you want a clean React UI
Theo Baker
Project Manager at Riverina
Atsuo was an excellent coder, he fixed my issues perfectly. He constantly kept in communication and executed the changes as i wanted. Excellent coder
Martin Jonsson
CTO at Utopia
It's really pleasant to work with Atsuo. He understood the assignment from the beginning and had regular input regarding our thoughts and ideas. He delivered the project on time also maintaining a high-quality of work. He gave us ownership of the NFTs by creating the metadata and the rarity table and also stayed available for any more questions.
Urooj Khan
CEO at GreatDealCoin