Kohei Hishiyama | Resume

1. Personal Information

Name	Kohei Hishiyama
Date of Birth	January 22, 1971
Age	54 years old
Company	THINK DESIGN
Company Address	Wizard Building 402, 1-4-3 Asamacho, Nishi-ku, Yokohama, Kanagawa 220-0072, Japan
Phone	+81 80 2780 7686
Email	hello@thinkdsgn.com

2. Education

Period	Institution	Notes
April 1986	Kanagawa Prefectural Shiroyama High School - Enrolled
March 1989	Kanagawa Prefectural Shiroyama High School - Graduated

3. Work Experience

Period	Company/Position	Notes
1989 - 2000	Construction industry, Independent tile craftsman	Various construction sites
2000 - 2002	Other industries	Encountered HTML, left construction due to back pain
Early 2000s	Freelance Designer	Self-taught HTML, continued design work
2002	IT Company	Frontend Engineer, Designer/Coder
2004	Multiple Startups	Director/Designer
2006 - Present	THINK DESIGN	Founder & CEO

4. Technical Stack

Core Languages & Technologies

• HTML5/CSS3 - 20+ years (from pre-CSS HTML era)
• JavaScript (ES6+) - 15+ years
• TypeScript - Type-safe large-scale development
• Python - AI development, data processing, automation
• Node.js - Server-side development
• PHP - Legacy system support
• SQL - Database design & operations
• Macromedia Director - From web's early days

Frameworks & Libraries

• In-house Development: ANTI SWIPER Series (JavaScript)
• Vue.js, Angular - Modern frameworks
• Tailwind CSS, Bootstrap - UI libraries
• RESTful API, Axios - API communication

AI Co-Creation Development Tools & Prompt Engineering

• Prompt Design & Optimization: High-precision instruction design and performance optimization for generative AI
• Amazon Q: IDE-integrated AI assistant
• ChatGPT, Gemini, Claude: Prompt design, code generation, review, interactive development
• GitHub Copilot: Real-time code assistance, pair programming
• Gemini Pro: Technical research, architecture design, complex problem solving
• Vosk: Open-source speech recognition for AI assistant development
• AI Collaboration Flow: Efficient development process construction through multi-AI coordination

Database & Backend

• MySQL/PostgreSQL: Relational database design & operations
• Express.js: API development with Node.js framework
• JWT Authentication: Secure user authentication systems
• Docker: Containerized environment setup

Platform & Services

• SaaS Development: Full-stack support
• Payment Systems: Stripe API integration
• CDN Distribution: Global delivery systems
• Security: Enterprise-level implementation
• AWS: Infrastructure construction & operations (RDS, EC2, S3, etc.)

Design & Development Tools

• Adobe Creative Cloud: Photoshop, Illustrator, XD, After Effects, Premiere Pro, Lightroom
• Code Editors: VS Code, Sublime Text, Atom
• Version Control: Git, GitHub, GitLab
• Prototyping: Figma, Sketch, InVision, Marvel, Proto.io, Axure
• Video Editing & Production: Final Cut Pro, DaVinci Resolve
• Other Tools: Blender (3D Design), Canva, Microsoft Office, Google Workspace
oduction: Final Cut Pro, DaVinci Resolve
• Others: Blender (3D Design), Canva, Microsoft Office, Google Workspace

AI Co-Creation Development Tools & Prompt Engineering

• Prompt Design & Optimization: High-precision instruction design for generative AI
• Amazon Q: IDE-integrated AI assistant
• ChatGPT, Gemini, Claude: Prompt design, code generation, review
• GitHub Copilot: Real-time code assistance
• Vosk: Open-source speech recognition for AI assistant development
• AI Collaboration Flow: Multi-AI coordination

Database & Backend

• MySQL/PostgreSQL: Relational database design & operations
• Express.js: API development
• JWT Authentication: Secure user authentication
• Docker: Containerized environment

Platforms & Services

• SaaS Development: Full-stack support
• Payment Systems: Stripe API integration
• CDN Distribution: Global distribution
• Security: Enterprise-level implementation
• AWS: Infrastructure (RDS, EC2, S3, etc.)

Development & Operations Experience

• Web Technology Evolution: HTML dawn → CSS → Flash → HTML5 → SaaS → AI Co-creation
• Mobile Evolution: Feature phones → Smartphones → PWA
• AI Co-Creation Development: Rapid product development with generative AI
• Continuous Learning: 20+ years of technology update

5. Licenses & Certifications

Date	License/Certification
January 1991	Regular Driver's License (Class 1)
April 1997	Commercial Driver's License (Class 2)

6. AI Co-Creation Development Style

Development Approach

• Rapid Prototyping: From idea to working prototype within the same day
• AI Partnership: Conversational development with ChatGPT. Gemini, Claude and GitHub Copilot
• Prompt Engineering: High-precision instruction design
• End-to-End Development: Design to deployment
• Iterative Improvement: Quality enhancement through repeated prompt design
• AI Collaboration Optimization: Efficient development flow with multiple AI tools

Practical Experience

• Frontend: Interactive UI development with JavaScript/TypeScript
• API Development: Backend system construction with Node.js
• Dynamic Script Distribution: Personalized content delivery with API key authentication
• License Management: Domain restriction and subscription plan integration
• Infrastructure Operations: Scalable system construction on AWS
• Documentation: Technical specification creation and knowledge sharing

7. Notable Achievements

• Living Witness of Web Technology: From pre-HTML/CSS era to AI co-creation age
• In-house Product Development: Operational SaaS products as proof of technical capabilities
• AI-First Development: Generative AI as co-creation partners
• Prompt Engineer: Advanced AI instruction design for development efficiency

Last Updated: 20/09/2025