Kotaro's Lab
Web Developer & Designer
About this site
Welcome to the portfolio site of Kotaro, an engineer.
Here you will find a showcase of my past work and the skills I have acquired.
My journey as an engineer began with a love for creating exciting things.
I would be delighted if you find something of interest here.
Works
My Skill Set
- Core Competency
- Core technologies I can use to independently architect, build, and deploy web applications and sites from scratch.
- Applied Skills & Tools
- Specialized technologies and tools that I can effectively apply to implement specific features or to enhance the development workflow.
Backend
PHP
Laravel
MySQL / SQL
- Libraries & Others
PHPMailer
PHPUnit
Environment Variables (.env)
Frontend
HTML
-
CSS
Tailwind CSS
JavaScript
React
TypeScript
Alpine.js
- Libraries & Others
- FullCalendar
- SortableJS
- Flatpickr
- Axios
CMS
WordPress
- Custom theme development from scratch, extending existing themes via child themes, and ongoing site maintenance.
Tools & Design
Git / GitHub
Docker
Figma
-
Photoshop
Mermaid.js
Resend
- AI-Assisted Development
ChatGPT, Gemini, Copilot
About me
I’m a freelance web creator from Nagasaki, specializing in building thoughtful and user-centric websites.
My background isn’t typical for a developer. With 3 years of experience as a tutor, I excel at clear communication. With 2 years in sales, I know how to listen and identify core needs. This allows me to craft web solutions that are not just technically sound, but also perfectly aligned with my client’s vision and their users’ expectations.
In 2025, I turned my passion for web development into a profession. I manage the entire process, from initial design to a fully responsive WordPress site, acting as a dedicated partner for your business.
Away from the keyboard, I’m an avid gamer and cat enthusiast. Welcome to my portfolio, where I bring my skills and passions to life.
Profile
1998:
Kyushu, Japan
I grew up surrounded by the beautiful nature of Kyushu, Japan. According to my parents, I was quite an energetic kid and more than a little bit of a handful!
2010:
Inside the Screen
My middle school days were spent completely absorbed in the worlds of video games and anime. It wasn’t the kind of storybook youth you see in movies, but I was content exploring countless digital realms. Little did I know that this was the beginning of my journey to becoming a creator myself.
2016:
College Years
Fascinated by the world of DNA and genetics, I chose to major in biology. It was my first time living away from my hometown, and the newfound freedom was exhilarating. Surrounded by great friends, I finally got to experience the vibrant student life I thought I had missed out on.
2020:
A New Path
My first career was as a tutor, an unexpected but formative experience. For three years, I honed my ability to make complex subjects easy to understand and to patiently listen to my students’ challenges. These skills—clear communication and deep listening—are now the bedrock of my approach as a web creator, allowing me to truly understand and solve my clients’ problems.
2023:
A Turning Point
Life brought me back to my hometown, and for a time, I struggled, feeling anxious about where I was headed. It was a true crossroads. But in that period of uncertainty, I had the space to confront myself and ask a crucial question: “What do I truly love to do?” The answer was web development, and that realization changed everything.
2025:
Fall Down Seven, Get Up Eight
Looking inward, I reconnected with the joy of creating I’d loved for so long and decided to commit fully to a new path as a web designer and engineer. It was a chance to start over. True to the spirit of “Nanakorobi Yaoki”—a Japanese proverb meaning “fall down seven times, get up eight”—I began my journey, immersing myself completely in the world of web development.
Gratitude & a Path Forward
My passion for web development is fueled by a fundamental love for creating things that excite people. The deep gratitude I have for those who supported me during difficult times has become a powerful energy, driving my desire to meet their expectations.
My clear goal now is to channel that gratitude into action: to work sincerely with each and every client and build websites that solve their challenges.
I promise to continue learning and growing, one steady step at a time.
Contact me
Thank you for visiting. I hope this portfolio has given you a clear picture of my passion for creating user-focused websites. Have a project you’d like to discuss, or an idea you want to bring to life? Let’s start a conversation using the form below.
