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

$ whoami

Hello 👋

Nobuo Miura

Software Engineer

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

$ 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 / open source
  • Studio: Lupo Labs (lupo-labs.com)
  • 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
  • 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
  • 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

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

Freelance inquiries and estimates — system development, cloud infrastructure, applied AI, web — go through Lupo Labs, the software studio I run independently.

For anything personal or off-topic: nobuo.miura.dev@gmail.com