A development approach advocated by Netflix in 2018 where engineers handle the entire software lifecycle:
Design → Implementation → Testing → Deployment → Operation → Support

Full-Cycle (depth of development process), not Full-Stack (breadth of technical domains)

Reference: Netflix Technology Blog (2018)

Practical Example:

• Fast logbook PWA: Handled everything from planning → PWA/i18n learning → implementation → OSS release & Netlify deployment → user support

• Frontend: JavaScript, HTML/CSS, jQuery, WebRTC API, Web Speech API, Geolocation API, Prompt API, Chrome extensions, Firefox extensions, VS Code extensions, Claude Desktop extensions, UserScript, PWA, Bookmarklet
• Backend: PHP, Laravel, MySQL, PostgreSQL, SASS, Twig, Python
• Infrastructure: AWS, Azure, Linux, BSD, Windows Server, Apache, MariaDB, ssh, sendmail, Git, Subversion, Docker, Vagrant, Ansible, Mackerel
• Marketing: WordPress, SEO, Google Ads, Facebook Ads, Press releases, Listing on lead generation sites, Google Analytics 4, Google Search Console, Google Tag Manager, Structured data (schema)
• AI Tools: GitHub Copilot Chat, ReCline-Legacy, Claude, ChatGPT, MS Copilot, M365 Copilot, Gemini, Grok, Rakuten AI, NotebookLM, DALL-E3, MCP Server, MCP config files, Local LLM AI (Ollama, LM Studio, GPT4ALL)
• Chat Tools: Chatwork, Slack, LINE, Teams, Messenger, Discord, Matrix, Google Chat, Google Meet, Zoom, FaceTime
• Knowledge Base: esa.io, OneNote, Google Keep, Redmine Wiki, Zenn.dev, qiita.com

• Frontend: TypeScript, React, Vite, Vue.js
• Certification: IPA Database Specialist

A timestamped work memo PWA that allows aggregation in HTML and Markdown table format, with export functionality.

• Tech stack: PWA, JavaScript, HTML/CSS, i18n
• Problem Solved: Realized simple work logging and time aggregation with a PWA requiring no installation or account. Can be installed as an app on mobile devices. Easy local storage using HTML export.
• Use Cases:
  • Work log management for individual developers
  • Billable hours tracking for freelancers
  • Daily report creation for teams where app installation is not allowed

• A PWA-based resume generator with offline operation, IndexedDB storage, and PDF export for seamless & serverless resume creation.
• Tech stack: PWA, Vite, IndexedDB, JavaScript, HTML/CSS
• Problem Solved: Create Japanese resume PDF files on the web without leaving data on servers. Export personal info, education, work history, and certifications as JSON files, and resume as PDF.
• Use Cases:
  • Personal resume creation
  • Digitization of resume data and increased versatility through JSON conversion

• A VS Code extension that allows embedding images directly into Markdown files, making documentation simpler and smarter.
• Tech stack: TypeScript, VS Code API, Markdown
• Problem Solved: Consolidate images displayed when previewing Markdown files into a single Markdown file.
• Use Cases:
  • Solving the problem of not being able to preview images in Markdown files alone

• An MCP server that bridges LLMs (Claude, Cursor editor, GitHub Copilot Chat, etc.) with development environments, enabling seamless AI workflow integration and productivity enhancement.
• Tech stack: Node.js, Python, MCP, AI/LLM integration
• Problem Solved: Realized memory functionality across threads in Claude desktop app, which was impossible at the time.
• Use Cases:
  • Sharing the same knowledge across multiple CLI agents or accounts

• 🤖 Custom GPTs Development: 20+ (for internal process efficiency, including multilingual versions)
• 📞 Internal Phone Call Notification System: Built chat notification system (productivity improvement)
• 📫️ Email & Internet FAX Notification System: Developed and operated chat notification and filtering Power Automate flow (productivity improvement)
• 📃 Work Log PWA OSS Release: Developed & released Fast logbook PWA
• 🔧 Extension Total Installs: 720+ (VS Code, Chrome, Firefox)
  • Breakdown
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      (Chrome extension installs not auto-updated yet — displayed only on Chrome Web Store page)

• Open Source Portfolio: 60+ public repositories on GitHub
• Cross-Platform Development:
  • UserScripts: 30+ automation tools
  • Browser Extensions: Chrome Web Store + Firefox Add-ons (published)
  • VS Code Extension: Marketplace published
  • Desktop Application: Electron-based

1. Strategic Thinking for Maximizing Multifaceted Value Creation from Single Resources
   Create tutorials, deep-dives, and design notes from one deliverable, reaching different audiences with minimal additional cost.
2. Full-Cycle Development with Business Value Focus (Full-Stack Capable)

• Deliver end-to-end solutions from infrastructure to UX
  • Developed attendance management system with Laravel+Twig, including facial recognition with Azure Face API
• Created 20+ GPTs for business process automation, including multilingual versions
  • Applied to custom prompts in various chat AI project features, built expertise in simple RAG, SBI feedback AI from work logs, document review AI, etc.
• Developed MCP servers for enhanced AI workflow integration
  • Example: Memory extension for Claude desktop app

3. AI-Driven Business Process Optimization

• Automated call notification system reducing productivity loss
• Implemented FAX notification & filtering flow with Power Automate
• Built custom tools for competitive web analysis and email marketing
• Created custom prompts returning SBI feedback from work logs