AI Product Engineer

Yuki Sasai

From web development to AI-powered products.

5+ years and 50+ websites delivered. Now building with AI and modern web technologies.

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Tokyo, Japan · Remote · 佐々井裕希

50+

Websites Built

5 Years

Experience

WordPress

Professional

Next.js & AI

Growing

About

Design, build, ship.

I started my career in a digital advertising agency, where I worked on Meta Ads operation, creative production, campaign optimization, and performance improvement.

After that, I became independent and focused on web development, contributing to more than 50 website projects. My experience includes corporate websites, recruitment sites, landing pages, and e-commerce sites, primarily built with WordPress.

Currently, I am expanding my expertise into Next.js, TypeScript, system design, Python, and AI-powered product development.

My goal is to combine advertising, marketing, web development, and system design to build products that solve real business problems.

In the long term, I aim to become an AI Product Engineer who helps businesses and local communities solve meaningful challenges through AI-powered products.

Career

Career Timeline

2019
Started Web Development
WordPress Development
Corporate Websites
Shopify / EC
System Development
AI Product Engineering
Now
Building AI-powered Products

Services

What I Can Help With

WordPress Website
Corporate Website
Landing Page
Shopify
Website Renewal
System Development
SEO Optimization
AI IntegrationComing Soon

Projects

Professional Projects

End-to-end projects — from identifying challenges to design, development, and launch.

Livvylivvy.jp

Corporate Website

Livvy

Planning, design, and development of a corporate website reflecting the brand identity. Implemented responsive design and SEO optimization.

Challenge: The client needed a website that accurately communicates their brand appeal and provides a great user experience.
Solution: Built a responsive WordPress site with SEO best practices, ensuring clear messaging and accessibility across all devices.
Result: Website launched.

Role

Planning
Design
WordPress Development
Responsive Design
SEO

Tech Stack

WordPress
PHP
HTML
CSS
JavaScript

Visit Website →

Nagasenagase-ltd.co.jp

Corporate Website

Nagase

Planning, design, and development of a corporate website to communicate company information and services.

Challenge: A professional website was needed to effectively convey the company's credibility and service strengths.
Solution: Developed with WordPress, implementing clean layouts, responsive design, and SEO optimization.
Result: Website launched.

Role

Planning
Design
WordPress Development
Responsive Design
SEO

Tech Stack

WordPress
PHP
HTML
CSS
JavaScript

Visit Website →

Gym Landing Pageseamlessly.site

Landing Page

Gym Landing Page

UI design and front-end development of a landing page for gym customer acquisition.

Challenge: An engaging page design was needed to effectively convert visitors into gym members.
Solution: Designed with a mobile-first approach, implementing clear CTAs and a compelling, conversion-focused layout.
Result: Website launched.

Role