Shusuke O.

Full-Stack × DevOps Engineer

I love building products that are interesting, work well, and naturally fit into people's lives and culture. From concept to deployment, I create things that are both technically sound and genuinely delightful to use.

Shusuke O.

About

I'm a Full-Stack Engineer passionate about creating products that meet real human needs. Currently based in Japan, developing cloud-based DX platforms for the construction industry with Azure Kubernetes Service and microservices architecture, helping transform traditional workflows into modern digital solutions.

I specialize in building large-scale cloud platforms with Azure Kubernetes Service and microservices architecture. I design and implement features end-to-end, developing new microservices, frontend applications, and SDKs with clean architecture principles and robust CI/CD practices.

Graduate of Keio University (Master's in Media and Governance, specializing in Cyber Informatics). Outside of work, I build side projects like Amida-san, which has gained 10,000+ users since launch.

Skills

Backend

  • • Go (Gin, Clean Architecture, DDD)
  • • TypeScript / JavaScript
  • • SQL

Frontend

  • • React, TypeScript
  • • Three.js (3D Graphics)
  • • Flutter (Dart)
  • • HTML/CSS, Responsive Design

DevOps & Infrastructure

  • • Azure (AKS), GCP, Cloudflare
  • • Kubernetes, Docker
  • • Terraform, CI/CD (GitHub Actions)
  • • Nginx, MySQL, Redis

Architecture & Others

  • • Clean Architecture, DDD
  • • Design Patterns
  • • Microservices
  • • Performance Optimization
  • • Database Design
  • • Java, Kotlin
  • • Machine Learning (Python, scikit-learn, PyTorch)

Products

Amida-san

10k+ Users

An interactive lottery tool where everyone participates in creating randomness together, not just watching results from a black box. Features stunning 3D visualization and works perfectly for team events, giveaways, and fair decision-making.

React 19TypeScriptThree.jsRedux ToolkitGoMySQLFirebaseStripeGitHub ActionsTerraformGCPCloudflare
Visit Amida-san →

X(Twitter) Bot

10k+ Followers • 7+ Years

A simple X(Twitter) follow-to-participate system that reduces barriers to entry and enhances user engagement. Successfully maintained and grown to over 10,000 followers over 7 years.

JavaScript • X(Twitter) API

Blog

Exploring the craft of building things that work well, feel natural to use, and bring a bit of joy to everyday life.

Read Blog →

Connect

X(Twitter) GitHub Dev.to Product Hunt