Basic Info
| Name | Shugo USHIO |
|---|---|
| Role | Software Engineer |
| GitHub | github.com/ushios (Since Mar 2011, 200+ repositories) |
| Active Period | ~20 years (active as a developer since around 2006, active commit history on GitHub since around 2012) |
Summary
Experienced software engineer spanning backend (Go / TypeScript / Python / PHP / Ruby), infrastructure (AWS / GCP / Terraform / CDK / Docker / Kubernetes), and frontend (Vue / Nuxt / Next.js). With a background in project management, I particularly enjoy system architecture and infrastructure design. Recently, my focus has been on LLM/AI Agent integrations (MCP servers, LangChain, Guardrails, n8n workflow automation) and IaC with AWS CDK.
Products
OsewaBeta
A SaaS-based care record sharing tool to smartly track the growth and daily care of your loved ones. Supports team sharing of care records in real-time for everything from babies to plants, designed offline-first, and highly extensible via APIs and AI (MCP) integrations.
limited-menu.todayIn Development
A service that helps you decide what to eat today.
Programming Languages
| Language | Proficiency | Key Usage & Achievements |
|---|---|---|
| Go 35 repositories, 2015~ | ◎ Primary | Built API servers, CLI tools, and various AWS-related libraries (e.g., awsconfig, sumoll, versiongo, go-localstack-sample). |
| TypeScript 19 repositories, main stack for the past 3 years | ◎ Primary | Next.js / CDK / MCP servers / Notion integration tools |
| JavaScript 19 repositories | ○ Proficient | Node.js, frontend, jQuery plugins (early career) |
| Python 13 repositories | ◎ Primary | LLM applications (LangChain / ChatGPT bot), scraping, machine learning study, Locust load testing |
| PHP 11 repositories, main stack in early career | ◎ Primary | Symfony2 bundle development & publishing, Laravel (Octane / X-Ray) |
| Ruby | ◎ Primary | Professional development, Chef cookbooks, API clients, etc. |
| Swift 5 repositories | △ Familiar | iOS apps, SDK development (e.g., SwifTumb Tumblr client) |
| Rust / C++ / Java / Elixir | △ Familiar | WebAssembly experiments, API clients, etc. |
Technical Skills
Frontend
- Vue.js / Nuxt
- v2~. Implemented corporate sites and admin dashboards.
- Next.js / React
- Used since v9. Firebase Auth integrations, tRPC.
- Others
- WebAssembly (Rust), Tauri, gRPC-Web evaluation.
Cloud & Infrastructure
- AWS
- Long-term experience. IaC with CDK (TypeScript), Amplify Gen2, Lambda / ECR / SQS / CloudSearch / X-Ray, multi-account management (aws-accounts).
- GCP
- Terraform management, GCS, BigQuery (syslog integration), GAE.
- IaC
- Terraform (AWS / GCP / Linode), AWS CDK, Ansible, Chef / Vagrant / Berkshelf (early career).
- Containers
- Docker (used since 2014, published several images), Docker Swarm, Kubernetes (kubeadm setup, VPS cluster).
- CI/CD
- GitHub Actions, CircleCI (custom artifact fetcher CLI), Jenkins.
- Middleware
- Elasticsearch (custom bundle/ops tools), Fluentd / Logstash, Kong, memcached, Node-RED, Socket.IO.
AI & LLM (Recent Focus)
- MCP
- Built custom Model Context Protocol servers (TypeScript).
- LLM App Development
- Bot and app development using LangChain and ChatGPT APIs (2023~).
- Agent Platform
- Runtime environments for NVIDIA NeMo Guardrails and OpenHands.
- Workflow Automation
- Workflow automation via self-hosted n8n.
- AI Coding
- Daily usage of AI coding tools like Claude Code, v0, etc.
Others
- Smart City / FIWARE
- Orion Context Broker, NGSIv2 / NGSI-LD, FogFlow.
- Low-level Implementation (Go)
- Load testing (Locust clusters), packet capturing, SOCKS5 proxy, etc.
- Image & Signal Processing
- OpenCV / GoCV, ffmpeg (cgo), EEG data (MNE / custom MFER parser).
Development History
- 2006–2011Started career in web production using HTML/CSS and Flash.
- 2012–2015PHP / Symfony2, published jQuery plugins, infrastructure configuration via Chef/Vagrant, early adoption of Docker.
- 2016–2019Go-centric library & microservice development, Kubernetes / Docker Swarm, Elasticsearch, gRPC, Swift (iOS SDK), Deep Learning study.
- 2020–2022Terraform (AWS / GCP), Nuxt / Next.js, FIWARE Smart City, tRPC, WebAssembly (Rust).
- 2023–presentTypeScript as main stack. LLM applications (LangChain / ChatGPT / Guardrails / OpenHands / MCP), AWS CDK / Amplify Gen2, n8n automation, Notion integrations.
Recent Activities
- 2025: 240 commits, 34 PRs (active across multiple organizations)
- 2026 (In progress): Continuous development of TypeScript products (osewa, clip-bookmark, etc.)
Areas of Limited Experience (Out of Scope)
- Mobile Native App Development
- While I have some past experience with Swift, my recent projects have been centered primarily on Web and infrastructure. Consequently, I have not been actively involved in large-scale mobile native development or operation (such as Android, Flutter, or React Native) lately.
- Mathematical AI Model Building & Data Science
- Extensive experience in integrating LLM APIs and MCP servers, but machine learning model architecture, training, and MLOps are out of scope.
- On-Premises Heavy Enterprise Systems (Java / C#)
- While I have development experience with Java, my recent projects have mostly involved cloud-native and modern Web technology stacks (Go, TypeScript, Python). Consequently, there are fewer recent cases of working on legacy on-premises architectures or dedicated maintenance of large-scale commercial databases.
This page is automatically generated based on the public and private repository histories of the GitHub account 'ushios' (2011–2026).