tubone24 · November 10, 2025 09:54
diff --git a/resume.json b/resume.json
 {
  "selectedTemplate": 9,
  "headings": {},
  "basics": {
    "name": "Yu Otsubo (大坪 悠)",
    "label": "AI Development Lead / Software Engineer",
    "picture": "https://ja.gravatar.com/userimage/17597495/b60124e5de5d624501af1fb07ee5e763.jpg?size=200",
    "email": "[email protected]",
    "phone": "",
    "website": "https://portfolio.tubone-project24.xyz",
    "summary": "Software and Infrastructure developer with 9+ years of experience, currently leading engineering teams with a focus on generative AI and AI agent development. AWS Certified Solutions Architect - Professional with deep expertise in serverless architecture and production-level AI systems. Published 3 technical books in 2025 on MCP and AI agents. Led development of A-BOSS, a production AI agent serving 700+ users at KDDI. Camera and music-loving web developer who is also an amateur DTM composer and guitarist. Active open source contributor with 190+ GitHub repositories.",
    "location": {
      "address": "",
      "postalCode": "",
      "city": "Kawasaki",
      "countryCode": "JP",
      "region": "Kanagawa"
    },
    "profiles": [
      {
        "network": "GitHub",
        "username": "tubone24",
        "url": "https://github.com/tubone24"
      },
      {
        "network": "Twitter",
        "username": "tubone24",
        "url": "https://x.com/tubone24"
      },
      {
        "network": "Blog",
        "username": "tubone24",
        "url": "https://blog.tubone-project24.xyz/"
      },
      {
        "network": "Instagram",
        "username": "mugimugi.cutedog",
        "url": "https://www.instagram.com/mugimugi.cutedog/"
      }
    ]
  },
  "work": [
    {
      "company": "KDDI Agile Development Center Inc.",
      "position": "Software Engineer / AI Development Lead",
      "website": "https://kddi-agile.com/",
      "startDate": "2024-02-01",
      "endDate": "",
      "summary": "Leading generative AI application development with focus on AI agents. Development lead for A-BOSS (AI Business Department Manager) serving 700+ users. Published 3 technical books in 2025. Contributing to AWS Japan Official Blog and providing training as KAGAI Learning Hub instructor.",
      "highlights": [
        "Development lead for A-BOSS - AI agent for KDDI corporate sales, serving 700+ users with 10 hours/month efficiency gain per user",
        "Built 議事録パックン (Minutes Pakkun) - comprehensive sales support tool with meeting transcription and proposal generation",
        "Deployed かぐたん (Kagutan) - secure internal AI chatbot to 1,200 users across 4 companies with ~2,000 monthly requests",
        "Co-authored 3 technical books: 'やさしいMCP入門', 'AIエージェント開発/運用入門', and 'KAG Tech Book Vol.1'",
        "Featured in AWS Japan Official Blog for A-BOSS case study",
        "Instructor at KAGAI Learning Hub for GenAI and AI agent training",
        "Active speaker at technical conferences including NW-JAWS and Langfuse Night",
        "Currently on parental leave (Sep 2025 - Apr 2026) while continuing technical activities"
      ]
    },
    {
      "company": "Startup Company (Michibiku Inc.)",
      "position": "SRE Engineer",
      "website": "https://michibiku.co.jp/",
      "startDate": "2023-09-01",
      "endDate": "2024-01-30",
      "summary": "As an SRE Engineer, improved continuous development processes using AWS CDK, GitHub Actions, and Autify.",
      "highlights": [
        "Built and improved CI/CD pipeline and infrastructure on AWS",
        "Migrated services from EC2 to ECS/Fargate with Blue/Green deployment",
        "Expanded automated testing using Autify and developed execution pipeline for QA efficiency"
      ]
    },
    {
      "company": "KDDI Corporation (EventHub Division)",
      "position": "Application Engineer / Development Manager",
      "website": "https://www.kddi.com/",
      "startDate": "2018-08-01",
      "endDate": "2023-08-31",
      "summary": "Full-cycle engineer for Web-based event matching platform using AWS, Nest.js, and React with TypeScript. Development Manager for Product Infrastructure team.",
      "highlights": [
        "Developed pseudo-live function for pre-recorded video live streaming",
        "Built video distribution platform and API infrastructure for external collaboration",
        "Developed public API platform and MA/SFA integration (Marketo/Salesforce connectors)",
        "Created Data Clean Room with Snowflake and AWS",
        "Led Product Infrastructure team mission formulation and execution",
        "Accelerated CI/CD and maintained E2E tests for engineering team support",
        "Introduced FaaS migration and Blue/Green deployment"
      ]
    },
    {
      "company": "KDDI Corporation",
      "position": "Tech Lead / Senior Engineer",
      "website": "https://www.kddi.com/",
      "startDate": "2019-04-01",
      "endDate": "2021-07-31",
      "summary": "Tech Lead and AWS architect for Web-based and Native App chatbot services. Led team of 8-10 members with responsibilities spanning architecture, development, team management, and stakeholder negotiation.",
      "highlights": [
        "First experience as tech lead",
        "Architecture featured at AWS Summit Tokyo 2019",
        "Managed 8-10 member team",
        "Scrum development methodology"
      ]
    },
    {
      "company": "KDDI Corporation",
      "position": "Data Engineering Developer",
      "website": "https://www.kddi.com/",
      "startDate": "2017-10-01",
      "endDate": "2019-03-31",
      "summary": "Developed data analysis infrastructure for chatbot conversation analysis. Implemented Data-lake architecture with serverless Lambda Python and Pandas.",
      "highlights": [
        "Data-lake Architecture using AWS",
        "Serverless with Lambda Python",
        "Pandas data analysis",
        "Scrum development"
      ]
    },
    {
      "company": "KDDI Corporation",
      "position": "Backend/DevOps Engineer",
      "website": "https://www.kddi.com/",
      "startDate": "2016-10-01",
      "endDate": "2017-09-30",
      "summary": "Developed and operated Web-based chatbot services using AWS, Python, and Node.js. Architecture featured ECS with Docker, DynamoDB, Lambda, and S3.",
      "highlights": [
        "First experience using AWS",
        "First experience using Python and Node.js",
        "Serverless architecture implementation",
        "CI/CD with Drone and Pytest",
        "Lectured at AWS Summit Tokyo 2019 company booth",
        "Scrum development"
      ]
    },
    {
      "company": "KDDI Corporation",
      "position": "Project Manager",
      "website": "https://www.kddi.com/",
      "startDate": "2017-04-01",
      "endDate": "2017-09-30",
      "summary": "Led analytics operation system development using Splunk and Hadoop (MapR) for internal log analysis.",
      "highlights": [
        "Project management and team building",
        "Big data handling with Splunk and Hadoop (MapR)",
        "Internal log analytics operation system"
      ]
    },
    {
      "company": "KDDI Corporation",
      "position": "System Engineer / DevOps",
      "website": "https://www.kddi.com/",
      "startDate": "2016-04-01",
      "endDate": "2017-03-31",
      "summary": "Developed and operated location-based services using on-premise servers. Built integrated monitoring system with Zabbix.",
      "highlights": [
        "Location-based service development and operation",
        "Integrated monitoring system with Zabbix and Expect automation",
        "First professional engineering role"
      ]
    }
  ],
  "volunteer": [
    {
      "organization": "Langfuse JP同好会",
      "position": "Community Member",
      "website": "https://connpass.com/",
      "startDate": "2024-01-01",
      "endDate": "",
      "summary": "Active participant in Japanese Langfuse community, sharing LLMOps knowledge and best practices.",
      "highlights": [
        "Speaker at Langfuse Night #1 (Nov 2024): 'Langfuse v3 使ってますか?'",
        "Developed langfuse-v3-terraform module for AWS deployment",
        "Published blog posts on cost-effective Langfuse operation"
      ]
    },
    {
      "organization": "KAGAI Learning Hub",
      "position": "Instructor",
      "website": "https://kddi-agile.com",
      "startDate": "2025-01-01",
      "endDate": "",
      "summary": "Providing enterprise training on generative AI and AI agent development.",
      "highlights": [
        "Corporate training on GenAI application development",
        "AI agent architecture and LLMOps workshops",
        "Sharing production-level implementation knowledge"
      ]
    },
    {
      "organization": "Open Source Community",
      "position": "Active Contributor",
      "website": "https://github.com/tubone24",
      "startDate": "2016-01-01",
      "endDate": "",
      "summary": "Maintaining 190+ public repositories with focus on developer productivity tools and AI agent ecosystem.",
      "highlights": [
        "Created midi-mcp-server (16 stars) - MCP server for MIDI generation",
        "Developed mcp-prompts - MCP server for prompt template management",
        "Built langfuse-v3-terraform - Terraform module for Langfuse v3 on AWS",
        "Maintained portfolio and blog sites with 100% Lighthouse scores",
        "Created developer tools: ebook_homebrew, update_release, npm_profile_card"
      ]
    }
  ],
  "education": [
    {
      "institution": "Waseda University",
      "area": "Department of Education",
      "studyType": "Bachelor",
      "startDate": "2012-04-01",
      "endDate": "2016-03-31",
      "gpa": "3.4",
      "courses": [
        "Social education",
        "Educational psychology",
        "Education within enterprise"
      ]
    },
    {
      "institution": "Waseda University",
      "area": "Software Engineering (Sub-major)",
      "studyType": "Sub-major",
      "startDate": "2012-04-01",
      "endDate": "2016-03-31",
      "gpa": "",
      "courses": [
        "Javascript",
        "C++",
        "Ruby",
        "VisualBasic",
        "Java",
        "Unix/Linux",
        "UML/Design Pattern",
        "Multimedia (Adobe PhotoShop/AfterEffects/Premier)"
      ]
    },
    {
      "institution": "Waseda University",
      "area": "Data Analysis (Sub-major)",
      "studyType": "Sub-major",
      "startDate": "2012-04-01",
      "endDate": "2016-03-31",
      "gpa": "",
      "courses": [
        "Database (MySQL, Oracle)",
        "R",
        "Multivariate analysis",
        "Social statistics"
      ]
    },
    {
      "institution": "Niigata Prefectural Nagaoka High School",
      "area": "General Education",
      "studyType": "High School Diploma",
      "startDate": "2009-04-01",
      "endDate": "2012-03-31",
      "gpa": "",
      "courses": []
    }
  ],
  "awards": [
    {
      "title": "AWS Summit Tokyo 2019 - Featured Speaker",
      "date": "2019-06-12",
      "awarder": "Amazon Web Services / KDDI Corporation",
      "summary": "Lectured at company booth on chatbot architecture using AWS services. Presented serverless architecture with ECS, DynamoDB, and Lambda."
    },
    {
      "title": "KDDI-BX Project Achievement",
      "date": "2024-12-31",
      "awarder": "KDDI Corporation",
      "summary": "A-BOSS project contributed to 46,939 hours/year saved across KDDI-BX initiative. Generated 10 hours/month efficiency per user for 700+ sales staff."
    },
    {
      "title": "Award of Technology Quality Improvement",
      "date": "2019-03-31",
      "awarder": "KDDI Corporation",
      "summary": "Stable and flexible system design utilizing AWS and successfully responded to large-scale traffic without problems."
    }
  ],
  "certificates": [
    {
      "name": "AWS Certified Solutions Architect - Professional",
      "date": "Active",
      "issuer": "Amazon Web Services",
      "url": "https://aws.amazon.com/certification/"
    }
  ],
  "publications": [
    {
      "name": "やさしいMCP入門 (Gentle Introduction to MCP)",
      "publisher": "秀和システム (Shuwa System)",
      "releaseDate": "2025-07-01",
      "url": "https://www.amazon.co.jp/dp/4798075736",
      "summary": "Co-authored with Minoru Onda. Introduction to Model Context Protocol (MCP), the new standard for AI agent era. Based on popular slides, explains fundamentals accessible to both engineers and non-engineers. Covers MCP architecture, hands-on tutorials, client/server applications, and business impact. Reprinted within 2 months due to strong reception. 160 pages, A5 format."
    },
    {
      "name": "AIエージェント開発/運用入門 [生成AI深掘りガイド] (AI Agent Development/Operations Guide)",
      "publisher": "SBクリエイティブ (SB Creative)",
      "releaseDate": "2025-10-01",
      "url": "https://www.sbcr.jp/product/4815636609/",
      "summary": "Co-authored with Minoru Onda and Masaki Tsukada. Comprehensive guide covering AI agent fundamentals to implementation and LLMOps. Includes complete implementation examples from simple reasoning agents to MCP-based and multi-agent systems. Covers LangChain, LangGraph, Mastra, Amazon Bedrock, Langfuse, and Guardrails. Features full-color illustrations and extensive hands-on exercises. Launch event held on release date. 408 pages."
    },
    {
      "name": "KAG Tech Book -Vol1-",
      "publisher": "KDDI Agile Development Center",
      "releaseDate": "2025-05-30",
      "url": "https://techbookfest.org/product/7YEcq5ZEqMrcn7syzVhcdQ",
      "summary": "Technical anthology by KDDI Agile Development Center engineers. Contributed chapter on 'Celery in Detail' - comprehensive guide to Python distributed task queue library including operational considerations and AWS scaling practices. Published at Gijutsushoten 18 (Tech Book Festival 18)."
    }
  ],
  "skills": [
    {
      "name": "Generative AI & LLM",
      "level": "Master",
      "keywords": [
        "Amazon Bedrock",
        "Claude 4 (Opus/Sonnet)",
        "OpenAI API",
        "LangChain",
        "LangGraph",
        "Mastra",
        "Model Context Protocol (MCP)",
        "Langfuse",
        "ReAct Agent Pattern",
        "Agentic Workflow",
        "Multi-Agent Systems",
        "A2A Protocol",
        "RAG (Retrieval Augmented Generation)"
      ]
    },
    {
      "name": "AWS Cloud Services",
      "level": "Master",
      "keywords": [
        "Lambda",
        "ECS/Fargate",
        "DynamoDB",
        "S3",
        "SQS/SNS",
        "CloudWatch",
        "Athena",
        "Glue",
        "Kinesis",
        "RDS",
        "ElastiCache Valkey",
        "OpenSearch Serverless",
        "Transcribe",
        "AppSync",
        "Amplify",
        "Terraform",
        "AWS CDK",
        "Terraform Cloud"
      ]
    },
    {
      "name": "Backend Development",
      "level": "Master",
      "keywords": [
        "FastAPI (Python)",
        "Flask (Python)",
        "Nest.js (TypeScript)",
        "Node.js",
        "Express",
        "SpringBoot (Java)",
        "Echo (Go)",
        "Pytest",
        "Pandas",
        "Scikit-learn"
      ]
    },
    {
      "name": "Frontend Development",
      "level": "Advanced",
      "keywords": [
        "React.js",
        "Next.js",
        "Gatsby.js",
        "Astro",
        "Vue.js",
        "Nuxt.js",
        "Preact",
        "TypeScript",
        "Styled Components",
        "Bootstrap 5",
        "Sass/SCSS",
        "Jest",
        "React Testing Library",
        "Cypress",
        "Storybook",
        "Percy",
        "Lighthouse"
      ]
    },
    {
      "name": "Database & Data Engineering",
      "level": "Advanced",
      "keywords": [
        "MySQL",
        "PostgreSQL",
        "ClickHouse",
        "Snowflake",
        "Presto with Hadoop",
        "Data Lake Architecture"
      ]
    },
    {
      "name": "DevOps & CI/CD",
      "level": "Master",
      "keywords": [
        "GitHub Actions",
        "Drone CI",
        "CircleCI",
        "Travis CI",
        "Azure Pipelines",
        "Docker",
        "Autify",
        "K6 Load Testing",
        "Blue/Green Deployment",
        "Serverless Architecture",
        "Prettier",
        "ESLint",
        "Stylelint",
        "Textlint"
      ]
    },
    {
      "name": "Security & Monitoring",
      "level": "Advanced",
      "keywords": [
        "Snyk",
        "OWASP ZAP",
        "Gitguardian",
        "Brightsec",
        "Sentry",
        "Zabbix",
        "Splunk"
      ]
    },
    {
      "name": "Data Science & ML",
      "level": "Intermediate",
      "keywords": [
        "Jupyter Notebook",
        "Pandas",
        "Scikit-learn",
        "R",
        "Keras",
        "Statistical Analysis"
      ]
    },
    {
      "name": "Mobile Development",
      "level": "Beginner",
      "keywords": [
        "Flutter (Dart)",
        "Android Java (WearOS)"
      ]
    }
  ],
  "languages": [
    {
      "language": "Japanese",
      "fluency": "Native Speaker"
    },
    {
      "language": "English",
      "fluency": "Business Intermediate"
    }
  ],
  "interests": [
    {
      "name": "Professional Interests",
      "keywords": [
        "Generative AI and LLM applications",
        "AI Agent development and orchestration",
        "LLMOps and observability",
        "AWS serverless architecture",
        "Full-stack web development",
        "DevOps and CI/CD automation",
        "Open source contribution",
        "Technical writing and knowledge sharing"
      ]
    },
    {
      "name": "Photography",
      "keywords": [
        "Landscape photography",
        "Historical buildings and architecture",
        "Emotional and atmospheric shots",
        "Travel photography worldwide"
      ]
    },
    {
      "name": "Music",
      "keywords": [
        "DTM composition (Vocaloid)",
        "Guitar playing",
        "High-tempo rhythmic music",
        "Collaboration with other artists"
      ]
    },
    {
      "name": "Personal Projects",
      "keywords": [
        "Weekend coding projects",
        "Home automation with Raspberry Pi",
        "Chrome theme development",
        "Technical blog writing"
      ]
    }
  ],
  "projects": [
    {
      "name": "A-BOSS (AI Business Department Manager)",
      "description": "Production AI agent serving as a virtual department manager for KDDI corporate sales. Provides executive-level expertise for proposal reviews and strategic guidance. Features faithful replication of real executive's thinking patterns, personality, and speaking style (including Kansai dialect). Built on Amazon Bedrock with Agentic Workflow using ReAct pattern.",
      "highlights": [
        "Serving 700+ KDDI corporate sales staff in production",
        "Achieves 10 hours/month efficiency gain per user",
        "Reduced proposal creation time by up to 1 hour",
        "Contributes to KDDI-BX initiative (46,939 hours/year saved company-wide)",
        "Featured in AWS Japan Official Blog and multiple media outlets (Nikkei, Business Insider Japan)",
        "Multi-modal analysis including PowerPoint documents",
        "Automatic user feedback summarization and reflection",
        "RAG with internal knowledge base",
        "LLMOps with Langfuse for observability"
      ],
      "keywords": [
        "Amazon Bedrock",
        "Claude 4 Sonnet",
        "LangChain",
        "LangGraph",
        "ReAct Agent",
        "Amazon OpenSearch Serverless",
        "ECS",
        "DynamoDB",
        "Langfuse",
        "LLMOps"
      ],
      "startDate": "2024-07-01",
      "endDate": "",
      "roles": [
        "Development Lead",
        "AI Solution Architect",
        "LLMOps Engineer"
      ],
      "url": "https://www.youtube.com/watch?v=qxUbeFSupAc",
      "entity": "KDDI Agile Development Center",
      "type": "Production AI Agent"
    },
    {
      "name": "議事録パックン (Minutes Pakkun)",
      "description": "Comprehensive sales support tool covering the full cycle: meeting transcription → proposal creation → knowledge sharing. Automatically generates meeting minutes from audio/video, creates proposal drafts, searches internal product information, generates competitor comparison tables, and creates daily/weekly reports.",
      "highlights": [
        "Saves up to 1 hour per meeting",
        "End-to-end sales activity support",
        "Multi-modal input (audio/video)",
        "Automated proposal generation",
        "Internal knowledge base integration",
        "Competitor analysis automation"
      ],
      "keywords": [
        "Amazon Transcribe",
        "Amazon Bedrock",
        "Claude 3 Opus",
        "LangChain",
        "ReAct Agent",
        "ECS",
        "DynamoDB",
        "Langfuse"
      ],
      "startDate": "2024-09-01",
      "endDate": "",
      "roles": [
        "Technical Lead",
        "Backend Developer"
      ],
      "url": "",
      "entity": "KDDI Agile Development Center",
      "type": "Production AI Tool"
    },
    {
      "name": "midi-mcp-server",
      "description": "Model Context Protocol server for MIDI generation. Enables AI agents to create MIDI files programmatically through standardized protocol interface.",
      "highlights": [
        "16 stars on GitHub",
        "Early contribution to MCP ecosystem",
        "TypeScript implementation",
        "Integration with midi-writer-js"
      ],
      "keywords": [
        "Model Context Protocol",
        "TypeScript",
        "MIDI",
        "AI Agent Tools"
      ],
      "startDate": "2025-04-01",
      "endDate": "",
      "roles": [
        "Creator",
        "Maintainer"
      ],
      "url": "https://github.com/tubone24/midi-mcp-server",
      "entity": "Personal OSS",
      "type": "Open Source Library"
    },
    {
      "name": "langfuse-v3-terraform",
      "description": "Terraform module for deploying Langfuse v3 on AWS. Enables cost-effective LLMOps infrastructure setup with best practices.",
      "highlights": [
        "Production-ready Terraform module",
        "Cost-optimized AWS deployment",
        "Comprehensive blog posts on operation",
        "Community contributions to Langfuse ecosystem"
      ],
      "keywords": [
        "Terraform",
        "Langfuse",
        "AWS",
        "LLMOps",
        "Infrastructure as Code"
      ],
      "startDate": "2024-12-01",
      "endDate": "",
      "roles": [
        "Creator",
        "Maintainer"
      ],
      "url": "https://github.com/tubone24/langfuse-v3-terraform",
      "entity": "Personal OSS",
      "type": "Infrastructure Tool"
    },
    {
      "name": "The Chatbot Service for Customer Support (Web)",
      "description": "Hybrid architecture chatbot combining AI and human operators for telecommunications customer support. Achieved high FAQ response rate using Elasticsearch as search engine.",
      "highlights": [
        "Hybrid architecture with chatbot and human operators",
        "Elasticsearch-based FAQ search engine",
        "Labor saving and improved customer satisfaction",
        "Roles: Primary Developer, Data Scientist, Scrum Master"
      ],
      "keywords": [
        "AWS",
        "Python",
        "Elasticsearch",
        "Customer Support"
      ],
      "startDate": "2016-03-16",
      "endDate": "2018-09-30",
      "roles": [
        "Primary Developer",
        "Data Scientist",
        "Scrum Master"
      ],
      "url": "https://www.au.com/support/inquiry/message/",
      "entity": "KDDI Corporation",
      "type": "Production Chatbot"
    },
    {
      "name": "The Chatbot Service for Customer Support (Native Apps)",
      "description": "Enhanced chatbot service for Android and iOS customer support apps. Microarchitecture using Node.js for BFF with WebSocket, Python for backend. Architecture featured at AWS Summit Tokyo 2019.",
      "highlights": [
        "Native app chatbot for Android and iOS",
        "WebSocket-based real-time communication",
        "Microarchitecture with Docker containers",
        "Featured at AWS Summit Tokyo 2019"
      ],
      "keywords": [
        "AWS",
        "Node.js",
        "Python",
        "WebSocket",
        "Native Apps"
      ],
      "startDate": "2018-10-01",
      "endDate": "2022-03-31",
      "roles": [
        "Architect",
        "Tech Lead",
        "Primary Developer",
        "Scrum Master"
      ],
      "url": "https://www.au.com/support/inquiry/message/",
      "entity": "KDDI Corporation",
      "type": "Production Chatbot"
    }
  ],
  "meta": {
    "canonical": "https://raw.githubusercontent.com/tubone24/resume-json-data/master/resume.json",
    "version": "v2.0.0",
    "lastModified": "2025-11-10T00:00:00",
    "note": "Updated with comprehensive research data as of November 2025. Currently on parental leave (Sep 2025 - Apr 2026) while continuing technical activities including book publications and open source contributions."
  }
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	"selectedTemplate": 9,
	"headings": {},
	"basics": {
	"name": "Yu Otsubo (大坪悠)",
	"label": "AI Development Lead / Software Engineer",
	"picture": "https://ja.gravatar.com/userimage/17597495/b60124e5de5d624501af1fb07ee5e763.jpg?size=200",
	"email": "[email protected]",
	"phone": "",
	"website": "https://portfolio.tubone-project24.xyz",
	"summary": "Software and Infrastructure developer with 9+ years of experience, currently leading engineering teams with a focus on generative AI and AI agent development. AWS Certified Solutions Architect - Professional with deep expertise in serverless architecture and production-level AI systems. Published 3 technical books in 2025 on MCP and AI agents. Led development of A-BOSS, a production AI agent serving 700+ users at KDDI. Camera and music-loving web developer who is also an amateur DTM composer and guitarist. Active open source contributor with 190+ GitHub repositories.",
	"location": {
	"address": "",
	"postalCode": "",
	"city": "Kawasaki",
	"countryCode": "JP",
	"region": "Kanagawa"
	},
	"profiles": [
	{
	"network": "GitHub",
	"username": "tubone24",
	"url": "https://github.com/tubone24"
	},
	{
	"network": "Twitter",
	"username": "tubone24",
	"url": "https://x.com/tubone24"
	},
	{
	"network": "Blog",
	"username": "tubone24",
	"url": "https://blog.tubone-project24.xyz/"
	},
	{
	"network": "Instagram",
	"username": "mugimugi.cutedog",
	"url": "https://www.instagram.com/mugimugi.cutedog/"
	}
	]
	},
	"work": [
	{
	"company": "KDDI Agile Development Center Inc.",
	"position": "Software Engineer / AI Development Lead",
	"website": "https://kddi-agile.com/",
	"startDate": "2024-02-01",
	"endDate": "",
	"summary": "Leading generative AI application development with focus on AI agents. Development lead for A-BOSS (AI Business Department Manager) serving 700+ users. Published 3 technical books in 2025. Contributing to AWS Japan Official Blog and providing training as KAGAI Learning Hub instructor.",
	"highlights": [
	"Development lead for A-BOSS - AI agent for KDDI corporate sales, serving 700+ users with 10 hours/month efficiency gain per user",
	"Built 議事録パックン (Minutes Pakkun) - comprehensive sales support tool with meeting transcription and proposal generation",
	"Deployed かぐたん (Kagutan) - secure internal AI chatbot to 1,200 users across 4 companies with ~2,000 monthly requests",
	"Co-authored 3 technical books: 'やさしいMCP入門', 'AIエージェント開発/運用入門', and 'KAG Tech Book Vol.1'",
	"Featured in AWS Japan Official Blog for A-BOSS case study",
	"Instructor at KAGAI Learning Hub for GenAI and AI agent training",
	"Active speaker at technical conferences including NW-JAWS and Langfuse Night",
	"Currently on parental leave (Sep 2025 - Apr 2026) while continuing technical activities"
	]
	},
	{
	"company": "Startup Company (Michibiku Inc.)",
	"position": "SRE Engineer",
	"website": "https://michibiku.co.jp/",
	"startDate": "2023-09-01",
	"endDate": "2024-01-30",
	"summary": "As an SRE Engineer, improved continuous development processes using AWS CDK, GitHub Actions, and Autify.",
	"highlights": [
	"Built and improved CI/CD pipeline and infrastructure on AWS",
	"Migrated services from EC2 to ECS/Fargate with Blue/Green deployment",
	"Expanded automated testing using Autify and developed execution pipeline for QA efficiency"
	]
	},
	{
	"company": "KDDI Corporation (EventHub Division)",
	"position": "Application Engineer / Development Manager",
	"website": "https://www.kddi.com/",
	"startDate": "2018-08-01",
	"endDate": "2023-08-31",
	"summary": "Full-cycle engineer for Web-based event matching platform using AWS, Nest.js, and React with TypeScript. Development Manager for Product Infrastructure team.",
	"highlights": [
	"Developed pseudo-live function for pre-recorded video live streaming",
	"Built video distribution platform and API infrastructure for external collaboration",
	"Developed public API platform and MA/SFA integration (Marketo/Salesforce connectors)",
	"Created Data Clean Room with Snowflake and AWS",
	"Led Product Infrastructure team mission formulation and execution",
	"Accelerated CI/CD and maintained E2E tests for engineering team support",
	"Introduced FaaS migration and Blue/Green deployment"
	]
	},
	{
	"company": "KDDI Corporation",
	"position": "Tech Lead / Senior Engineer",
	"website": "https://www.kddi.com/",
	"startDate": "2019-04-01",
	"endDate": "2021-07-31",
	"summary": "Tech Lead and AWS architect for Web-based and Native App chatbot services. Led team of 8-10 members with responsibilities spanning architecture, development, team management, and stakeholder negotiation.",
	"highlights": [
	"First experience as tech lead",
	"Architecture featured at AWS Summit Tokyo 2019",
	"Managed 8-10 member team",
	"Scrum development methodology"
	]
	},
	{
	"company": "KDDI Corporation",
	"position": "Data Engineering Developer",
	"website": "https://www.kddi.com/",
	"startDate": "2017-10-01",
	"endDate": "2019-03-31",
	"summary": "Developed data analysis infrastructure for chatbot conversation analysis. Implemented Data-lake architecture with serverless Lambda Python and Pandas.",
	"highlights": [
	"Data-lake Architecture using AWS",
	"Serverless with Lambda Python",
	"Pandas data analysis",
	"Scrum development"
	]
	},
	{
	"company": "KDDI Corporation",
	"position": "Backend/DevOps Engineer",
	"website": "https://www.kddi.com/",
	"startDate": "2016-10-01",
	"endDate": "2017-09-30",
	"summary": "Developed and operated Web-based chatbot services using AWS, Python, and Node.js. Architecture featured ECS with Docker, DynamoDB, Lambda, and S3.",
	"highlights": [
	"First experience using AWS",
	"First experience using Python and Node.js",
	"Serverless architecture implementation",
	"CI/CD with Drone and Pytest",
	"Lectured at AWS Summit Tokyo 2019 company booth",
	"Scrum development"
	]
	},
	{
	"company": "KDDI Corporation",
	"position": "Project Manager",
	"website": "https://www.kddi.com/",
	"startDate": "2017-04-01",
	"endDate": "2017-09-30",
	"summary": "Led analytics operation system development using Splunk and Hadoop (MapR) for internal log analysis.",
	"highlights": [
	"Project management and team building",
	"Big data handling with Splunk and Hadoop (MapR)",
	"Internal log analytics operation system"
	]
	},
	{
	"company": "KDDI Corporation",
	"position": "System Engineer / DevOps",
	"website": "https://www.kddi.com/",
	"startDate": "2016-04-01",
	"endDate": "2017-03-31",
	"summary": "Developed and operated location-based services using on-premise servers. Built integrated monitoring system with Zabbix.",
	"highlights": [
	"Location-based service development and operation",
	"Integrated monitoring system with Zabbix and Expect automation",
	"First professional engineering role"
	]
	}
	],
	"volunteer": [
	{
	"organization": "Langfuse JP同好会",
	"position": "Community Member",
	"website": "https://connpass.com/",
	"startDate": "2024-01-01",
	"endDate": "",
	"summary": "Active participant in Japanese Langfuse community, sharing LLMOps knowledge and best practices.",
	"highlights": [
	"Speaker at Langfuse Night #1 (Nov 2024): 'Langfuse v3 使ってますか?'",
	"Developed langfuse-v3-terraform module for AWS deployment",
	"Published blog posts on cost-effective Langfuse operation"
	]
	},
	{
	"organization": "KAGAI Learning Hub",
	"position": "Instructor",
	"website": "https://kddi-agile.com",
	"startDate": "2025-01-01",
	"endDate": "",
	"summary": "Providing enterprise training on generative AI and AI agent development.",
	"highlights": [
	"Corporate training on GenAI application development",
	"AI agent architecture and LLMOps workshops",
	"Sharing production-level implementation knowledge"
	]
	},
	{
	"organization": "Open Source Community",
	"position": "Active Contributor",
	"website": "https://github.com/tubone24",
	"startDate": "2016-01-01",
	"endDate": "",
	"summary": "Maintaining 190+ public repositories with focus on developer productivity tools and AI agent ecosystem.",
	"highlights": [
	"Created midi-mcp-server (16 stars) - MCP server for MIDI generation",
	"Developed mcp-prompts - MCP server for prompt template management",
	"Built langfuse-v3-terraform - Terraform module for Langfuse v3 on AWS",
	"Maintained portfolio and blog sites with 100% Lighthouse scores",
	"Created developer tools: ebook_homebrew, update_release, npm_profile_card"
	]
	}
	],
	"education": [
	{
	"institution": "Waseda University",
	"area": "Department of Education",
	"studyType": "Bachelor",
	"startDate": "2012-04-01",
	"endDate": "2016-03-31",
	"gpa": "3.4",
	"courses": [
	"Social education",
	"Educational psychology",
	"Education within enterprise"
	]
	},
	{
	"institution": "Waseda University",
	"area": "Software Engineering (Sub-major)",
	"studyType": "Sub-major",
	"startDate": "2012-04-01",
	"endDate": "2016-03-31",
	"gpa": "",
	"courses": [
	"Javascript",
	"C++",
	"Ruby",
	"VisualBasic",
	"Java",
	"Unix/Linux",
	"UML/Design Pattern",
	"Multimedia (Adobe PhotoShop/AfterEffects/Premier)"
	]
	},
	{
	"institution": "Waseda University",
	"area": "Data Analysis (Sub-major)",
	"studyType": "Sub-major",
	"startDate": "2012-04-01",
	"endDate": "2016-03-31",
	"gpa": "",
	"courses": [
	"Database (MySQL, Oracle)",
	"R",
	"Multivariate analysis",
	"Social statistics"
	]
	},
	{
	"institution": "Niigata Prefectural Nagaoka High School",
	"area": "General Education",
	"studyType": "High School Diploma",
	"startDate": "2009-04-01",
	"endDate": "2012-03-31",
	"gpa": "",
	"courses": []
	}
	],
	"awards": [
	{
	"title": "AWS Summit Tokyo 2019 - Featured Speaker",
	"date": "2019-06-12",
	"awarder": "Amazon Web Services / KDDI Corporation",
	"summary": "Lectured at company booth on chatbot architecture using AWS services. Presented serverless architecture with ECS, DynamoDB, and Lambda."
	},
	{
	"title": "KDDI-BX Project Achievement",
	"date": "2024-12-31",
	"awarder": "KDDI Corporation",
	"summary": "A-BOSS project contributed to 46,939 hours/year saved across KDDI-BX initiative. Generated 10 hours/month efficiency per user for 700+ sales staff."
	},
	{
	"title": "Award of Technology Quality Improvement",
	"date": "2019-03-31",
	"awarder": "KDDI Corporation",
	"summary": "Stable and flexible system design utilizing AWS and successfully responded to large-scale traffic without problems."
	}
	],
	"certificates": [
	{
	"name": "AWS Certified Solutions Architect - Professional",
	"date": "Active",
	"issuer": "Amazon Web Services",
	"url": "https://aws.amazon.com/certification/"
	}
	],
	"publications": [
	{
	"name": "やさしいMCP入門 (Gentle Introduction to MCP)",
	"publisher": "秀和システム (Shuwa System)",
	"releaseDate": "2025-07-01",
	"url": "https://www.amazon.co.jp/dp/4798075736",
	"summary": "Co-authored with Minoru Onda. Introduction to Model Context Protocol (MCP), the new standard for AI agent era. Based on popular slides, explains fundamentals accessible to both engineers and non-engineers. Covers MCP architecture, hands-on tutorials, client/server applications, and business impact. Reprinted within 2 months due to strong reception. 160 pages, A5 format."
	},
	{
	"name": "AIエージェント開発/運用入門 [生成AI深掘りガイド] (AI Agent Development/Operations Guide)",
	"publisher": "SBクリエイティブ (SB Creative)",
	"releaseDate": "2025-10-01",
	"url": "https://www.sbcr.jp/product/4815636609/",
	"summary": "Co-authored with Minoru Onda and Masaki Tsukada. Comprehensive guide covering AI agent fundamentals to implementation and LLMOps. Includes complete implementation examples from simple reasoning agents to MCP-based and multi-agent systems. Covers LangChain, LangGraph, Mastra, Amazon Bedrock, Langfuse, and Guardrails. Features full-color illustrations and extensive hands-on exercises. Launch event held on release date. 408 pages."
	},
	{
	"name": "KAG Tech Book -Vol1-",
	"publisher": "KDDI Agile Development Center",
	"releaseDate": "2025-05-30",
	"url": "https://techbookfest.org/product/7YEcq5ZEqMrcn7syzVhcdQ",
	"summary": "Technical anthology by KDDI Agile Development Center engineers. Contributed chapter on 'Celery in Detail' - comprehensive guide to Python distributed task queue library including operational considerations and AWS scaling practices. Published at Gijutsushoten 18 (Tech Book Festival 18)."
	}
	],
	"skills": [
	{
	"name": "Generative AI & LLM",
	"level": "Master",
	"keywords": [
	"Amazon Bedrock",
	"Claude 4 (Opus/Sonnet)",
	"OpenAI API",
	"LangChain",
	"LangGraph",
	"Mastra",
	"Model Context Protocol (MCP)",
	"Langfuse",
	"ReAct Agent Pattern",
	"Agentic Workflow",
	"Multi-Agent Systems",
	"A2A Protocol",
	"RAG (Retrieval Augmented Generation)"
	]
	},
	{
	"name": "AWS Cloud Services",
	"level": "Master",
	"keywords": [
	"Lambda",
	"ECS/Fargate",
	"DynamoDB",
	"S3",
	"SQS/SNS",
	"CloudWatch",
	"Athena",
	"Glue",
	"Kinesis",
	"RDS",
	"ElastiCache Valkey",
	"OpenSearch Serverless",
	"Transcribe",
	"AppSync",
	"Amplify",
	"Terraform",
	"AWS CDK",
	"Terraform Cloud"
	]
	},
	{
	"name": "Backend Development",
	"level": "Master",
	"keywords": [
	"FastAPI (Python)",
	"Flask (Python)",
	"Nest.js (TypeScript)",
	"Node.js",
	"Express",
	"SpringBoot (Java)",
	"Echo (Go)",
	"Pytest",
	"Pandas",
	"Scikit-learn"
	]
	},
	{
	"name": "Frontend Development",
	"level": "Advanced",
	"keywords": [
	"React.js",
	"Next.js",
	"Gatsby.js",
	"Astro",
	"Vue.js",
	"Nuxt.js",
	"Preact",
	"TypeScript",
	"Styled Components",
	"Bootstrap 5",
	"Sass/SCSS",
	"Jest",
	"React Testing Library",
	"Cypress",
	"Storybook",
	"Percy",
	"Lighthouse"
	]
	},
	{
	"name": "Database & Data Engineering",
	"level": "Advanced",
	"keywords": [
	"MySQL",
	"PostgreSQL",
	"ClickHouse",
	"Snowflake",
	"Presto with Hadoop",
	"Data Lake Architecture"
	]
	},
	{
	"name": "DevOps & CI/CD",
	"level": "Master",
	"keywords": [
	"GitHub Actions",
	"Drone CI",
	"CircleCI",
	"Travis CI",
	"Azure Pipelines",
	"Docker",
	"Autify",
	"K6 Load Testing",
	"Blue/Green Deployment",
	"Serverless Architecture",
	"Prettier",
	"ESLint",
	"Stylelint",
	"Textlint"
	]
	},
	{
	"name": "Security & Monitoring",
	"level": "Advanced",
	"keywords": [
	"Snyk",
	"OWASP ZAP",
	"Gitguardian",
	"Brightsec",
	"Sentry",
	"Zabbix",
	"Splunk"
	]
	},
	{
	"name": "Data Science & ML",
	"level": "Intermediate",
	"keywords": [
	"Jupyter Notebook",
	"Pandas",
	"Scikit-learn",
	"R",
	"Keras",
	"Statistical Analysis"
	]
	},
	{
	"name": "Mobile Development",
	"level": "Beginner",
	"keywords": [
	"Flutter (Dart)",
	"Android Java (WearOS)"
	]
	}
	],
	"languages": [
	{
	"language": "Japanese",
	"fluency": "Native Speaker"
	},
	{
	"language": "English",
	"fluency": "Business Intermediate"
	}
	],
	"interests": [
	{
	"name": "Professional Interests",
	"keywords": [
	"Generative AI and LLM applications",
	"AI Agent development and orchestration",
	"LLMOps and observability",
	"AWS serverless architecture",
	"Full-stack web development",
	"DevOps and CI/CD automation",
	"Open source contribution",
	"Technical writing and knowledge sharing"
	]
	},
	{
	"name": "Photography",
	"keywords": [
	"Landscape photography",
	"Historical buildings and architecture",
	"Emotional and atmospheric shots",
	"Travel photography worldwide"
	]
	},
	{
	"name": "Music",
	"keywords": [
	"DTM composition (Vocaloid)",
	"Guitar playing",
	"High-tempo rhythmic music",
	"Collaboration with other artists"
	]
	},
	{
	"name": "Personal Projects",
	"keywords": [
	"Weekend coding projects",
	"Home automation with Raspberry Pi",
	"Chrome theme development",
	"Technical blog writing"
	]
	}
	],
	"projects": [
	{
	"name": "A-BOSS (AI Business Department Manager)",
	"description": "Production AI agent serving as a virtual department manager for KDDI corporate sales. Provides executive-level expertise for proposal reviews and strategic guidance. Features faithful replication of real executive's thinking patterns, personality, and speaking style (including Kansai dialect). Built on Amazon Bedrock with Agentic Workflow using ReAct pattern.",
	"highlights": [
	"Serving 700+ KDDI corporate sales staff in production",
	"Achieves 10 hours/month efficiency gain per user",
	"Reduced proposal creation time by up to 1 hour",
	"Contributes to KDDI-BX initiative (46,939 hours/year saved company-wide)",
	"Featured in AWS Japan Official Blog and multiple media outlets (Nikkei, Business Insider Japan)",
	"Multi-modal analysis including PowerPoint documents",
	"Automatic user feedback summarization and reflection",
	"RAG with internal knowledge base",
	"LLMOps with Langfuse for observability"
	],
	"keywords": [
	"Amazon Bedrock",
	"Claude 4 Sonnet",
	"LangChain",
	"LangGraph",
	"ReAct Agent",
	"Amazon OpenSearch Serverless",
	"ECS",
	"DynamoDB",
	"Langfuse",
	"LLMOps"
	],
	"startDate": "2024-07-01",
	"endDate": "",
	"roles": [
	"Development Lead",
	"AI Solution Architect",
	"LLMOps Engineer"
	],
	"url": "https://www.youtube.com/watch?v=qxUbeFSupAc",
	"entity": "KDDI Agile Development Center",
	"type": "Production AI Agent"
	},
	{
	"name": "議事録パックン (Minutes Pakkun)",
	"description": "Comprehensive sales support tool covering the full cycle: meeting transcription → proposal creation → knowledge sharing. Automatically generates meeting minutes from audio/video, creates proposal drafts, searches internal product information, generates competitor comparison tables, and creates daily/weekly reports.",
	"highlights": [
	"Saves up to 1 hour per meeting",
	"End-to-end sales activity support",
	"Multi-modal input (audio/video)",
	"Automated proposal generation",
	"Internal knowledge base integration",
	"Competitor analysis automation"
	],
	"keywords": [
	"Amazon Transcribe",
	"Amazon Bedrock",
	"Claude 3 Opus",
	"LangChain",
	"ReAct Agent",
	"ECS",
	"DynamoDB",
	"Langfuse"
	],
	"startDate": "2024-09-01",
	"endDate": "",
	"roles": [
	"Technical Lead",
	"Backend Developer"
	],
	"url": "",
	"entity": "KDDI Agile Development Center",
	"type": "Production AI Tool"
	},
	{
	"name": "midi-mcp-server",
	"description": "Model Context Protocol server for MIDI generation. Enables AI agents to create MIDI files programmatically through standardized protocol interface.",
	"highlights": [
	"16 stars on GitHub",
	"Early contribution to MCP ecosystem",
	"TypeScript implementation",
	"Integration with midi-writer-js"
	],
	"keywords": [
	"Model Context Protocol",
	"TypeScript",
	"MIDI",
	"AI Agent Tools"
	],
	"startDate": "2025-04-01",
	"endDate": "",
	"roles": [
	"Creator",
	"Maintainer"
	],
	"url": "https://github.com/tubone24/midi-mcp-server",
	"entity": "Personal OSS",
	"type": "Open Source Library"
	},
	{
	"name": "langfuse-v3-terraform",
	"description": "Terraform module for deploying Langfuse v3 on AWS. Enables cost-effective LLMOps infrastructure setup with best practices.",
	"highlights": [
	"Production-ready Terraform module",
	"Cost-optimized AWS deployment",
	"Comprehensive blog posts on operation",
	"Community contributions to Langfuse ecosystem"
	],
	"keywords": [
	"Terraform",
	"Langfuse",
	"AWS",
	"LLMOps",
	"Infrastructure as Code"
	],
	"startDate": "2024-12-01",
	"endDate": "",
	"roles": [
	"Creator",
	"Maintainer"
	],
	"url": "https://github.com/tubone24/langfuse-v3-terraform",
	"entity": "Personal OSS",
	"type": "Infrastructure Tool"
	},
	{
	"name": "The Chatbot Service for Customer Support (Web)",
	"description": "Hybrid architecture chatbot combining AI and human operators for telecommunications customer support. Achieved high FAQ response rate using Elasticsearch as search engine.",
	"highlights": [
	"Hybrid architecture with chatbot and human operators",
	"Elasticsearch-based FAQ search engine",
	"Labor saving and improved customer satisfaction",
	"Roles: Primary Developer, Data Scientist, Scrum Master"
	],
	"keywords": [
	"AWS",
	"Python",
	"Elasticsearch",
	"Customer Support"
	],
	"startDate": "2016-03-16",
	"endDate": "2018-09-30",
	"roles": [
	"Primary Developer",
	"Data Scientist",
	"Scrum Master"
	],
	"url": "https://www.au.com/support/inquiry/message/",
	"entity": "KDDI Corporation",
	"type": "Production Chatbot"
	},
	{
	"name": "The Chatbot Service for Customer Support (Native Apps)",
	"description": "Enhanced chatbot service for Android and iOS customer support apps. Microarchitecture using Node.js for BFF with WebSocket, Python for backend. Architecture featured at AWS Summit Tokyo 2019.",
	"highlights": [
	"Native app chatbot for Android and iOS",
	"WebSocket-based real-time communication",
	"Microarchitecture with Docker containers",
	"Featured at AWS Summit Tokyo 2019"
	],
	"keywords": [
	"AWS",
	"Node.js",
	"Python",
	"WebSocket",
	"Native Apps"
	],
	"startDate": "2018-10-01",
	"endDate": "2022-03-31",
	"roles": [
	"Architect",
	"Tech Lead",
	"Primary Developer",
	"Scrum Master"
	],
	"url": "https://www.au.com/support/inquiry/message/",
	"entity": "KDDI Corporation",
	"type": "Production Chatbot"
	}
	],
	"meta": {
	"canonical": "https://raw.githubusercontent.com/tubone24/resume-json-data/master/resume.json",
	"version": "v2.0.0",
	"lastModified": "2025-11-10T00:00:00",
	"note": "Updated with comprehensive research data as of November 2025. Currently on parental leave (Sep 2025 - Apr 2026) while continuing technical activities including book publications and open source contributions."
	}
	}