nobuo@nobuo-miura.dev:~$
nobuo@nobuo-miura.dev: ~/portfolio — zsh

$ whoami

Hello 👋

Nobuo Miura

Software Engineer

Hokkaido, Japan — Remote & on-site (JST, UTC+9)

Available for freelance projects

$ cat about.md

# About

I'm a freelance engineer based in Hokkaido, Japan, working across a wide range of technical areas: system development, cloud architecture and build-out, infrastructure operations, automation, and applied AI.

I enjoy exploring new technologies and value learning broadly rather than limiting myself to a single field.

Whether selecting technologies, designing architectures, or improving and modernizing existing systems, I take the time to understand the context behind each challenge and find a practical approach that fits the project.

// Selected Work

Maintenance management system for government (web migration)

Migrated a desktop-centric legacy system to a web application, redesigned for the cloud. Led requirements, base design, cloud build-out, and implementation, integrating GIS features to improve field operations.

VB.NETASP.NETMongoDBGCPGoogle Maps API

GitHub Issue/PR auto-check app

Built a GitHub App that detects new issues and pull requests via webhooks, then auto-checks content, applies labels, and assigns reviewers — cutting manual triage and preventing missed checks.

GoGitHub AppsWebhook

Multi-system consolidation & cloud migration (AWS/Azure/M365)

Consolidated multiple legacy systems and migrated them in stages to a new platform: IaC-based infrastructure, identity integration with Microsoft Entra ID, operations design, and team enablement. Also introduced AI-powered support automation.

AWSAzureMicrosoft 365CloudFormationTerraform

Crack-detection AI for infrastructure inspection

Developed an AI system that detects cracks and defects in images: model design, training data curation, accuracy tuning, and API/web integration. Outperformed the external vendor's proposal and was adopted for production.

PythonPyTorchOpenCVASP.NETGCP

Slack-driven AWS operations automation

Built an app where an LLM interprets Slack messages and executes AWS resource operations — letting the team run routine operations entirely from Slack, without touching the AWS console.

PythonSlackAWSLLM API

API load testing & vulnerability assessment

Designed and ran load tests and verified authentication flows. Discovered a broken-authorization flaw allowing user impersonation, reported it before release, and drove the fix.

AWSk6Burp Suite
$ nobuo --info

$ nobuo --info

  • Experience: 10+ years (freelance since March 2020)
  • Main stack: C#/.NET / Python / Go
  • Focus: development / cloud / AI / security
  • Base: Hokkaido, Japan (remote & on-site / JST, UTC+9)
  • Languages: Japanese / English

$ ls -la ./skills/

# Skills

drwxr-xr-x languages_backend/

// languages & backend

  • C# / .NET
  • Python
  • Go
  • Rust
  • C / C++
  • SQL
  • PHP
  • Visual Basic

drwxr-xr-x web_frontend/

// web & frontend

  • JavaScript / TypeScript
  • HTML / CSS
  • React
  • Next.js
  • Vite
  • Tailwind CSS
  • ASP.NET

drwxr-xr-x cloud_infra/

// cloud & infrastructure

  • AWS
  • Azure
  • GCP
  • OCI
  • Cloudflare
  • Docker
  • Terraform
  • CloudFormation
  • Microsoft Entra ID
  • Linux

drwxr-xr-x scripting_ci/

// scripting & automation

  • Bash / Shell
  • PowerShell
  • GitHub Actions
  • GitLab CI
  • Jenkins

drwxr-xr-x ai_ml/

// AI & machine learning

  • PyTorch
  • TensorFlow
  • OpenCV
  • LLM API integration

drwxr-xr-x security_testing/

// security & testing

  • Burp Suite
  • Kali Linux
  • k6
  • Vulnerability assessment

drwxr-xr-x databases/

// databases

  • PostgreSQL
  • SQL Server
  • Oracle
  • MySQL / MariaDB
  • MongoDB
  • SQLite
  • Redis

drwxr-xr-x os/

// operating systems

  • Windows
  • Debian / Ubuntu
  • RHEL / AlmaLinux
  • Amazon Linux
  • macOS / iOS
  • FreeBSD

drwxr-xr-x tools/

// tools

  • Git / GitHub / GitLab
  • WSL
  • VS Code / Visual Studio
  • JetBrains IDEs
  • Jira / Confluence
  • Claude / ChatGPT / Copilot

$ gh repo list --pinned

# Projects

$ ./contact --send

# Contact

nobuo@nobuo-miura.dev: ~/contact — zsh

Interested in working together? I'm open to freelance contracts for system development, cloud infrastructure, applied AI, and security work. The quickest way to reach me is the contact form below.

Open Contact Form

// opens Google Forms