Hi, I’m Seisuke, a software engineer with six years of experience in both large-scale embedded systems and full-stack web development. With a background in Computer Science and Engineering, I’ve built efficient and maintainable systems while keeping a strong user-first mindset throughout my career.
Over the years, I’ve taken on complex technical challenges and led teams through demanding projects. By collaborating closely with my teammates, I've consistently delivered effective solutions through persistence and thoughtful problem-solving. I’m excited to bring this experience and resilience to help your team tackle its challenges and build impactful products.
Skills
Computer Language
C
C++
JavaScript
TypeScript
Python
Java
PHP
HTML
CSS
Sass
SQL
Framework/Library
Node.js
React
Next.js
Redux
Recoil
JQuery
Tailwind
React Native
LangChain
Database
MySQL
PostgreSQL
Cassandra
Tool/Platform
Git
Auth0
Firebase
Supabase
Joomla!
Jenkins
Redmine
Other
OOP
UML
DevOps
Agile Dev
SEMI Standards
Projects
Transport Controller
A large-scale application that controls thousands of machines transporting products in a semiconductor factory. It finds optimal transport routes, efficiently dispatches tasks, and manages transportation status.
Learning Management System
A web application designed to enhance learning for university professors and students. It includes features such as research paper search, assignment submission, and lecture material creation support powered by AI.
Corporate Website
A responsive corporate website consisting of multiple pages. Features include news feeds, subscriptions, and stock price information display.
PDF Chat
A single page web application that you can chat with AI and ask questions about a PDF file you uploaded
Issue Manager
A multi-page web application that enables you to efficiently manage the status and schedule of tasks for your projects.
Vocabulary Learning
An iOS application where web designers/developers can learn English technical vocabulary by testing the words in flashcards. Check it out on the iOS App Store!
Work Experience
Full Stack Web Developer
| Dec. 2024 - Current
Freelancer
Dec. 2024 - Current
- Developed a portal site for a major media company using Next.js
- Implemented authentication and authorization flows with Auth0
- Integrated payment processing and subscription management with external services
- Developed a learning management platform for universities using TypeScript and Next.js.
- Engineered a cloud-based feature that automatically generates contents using LLM and Retrieval-Augmented Generation (RAG).
- Created a feature that enables users to upload PDF files and add annotations to be shared in real-time.
- Architected a PostgreSQL database that ensures robust security and efficient data manipulation.
- Designed and implemented a UI that allows users to operate quickly and intuitively, while also improving content display speed.
- Developed a large-scale software for controlling machines which work in semiconductor factories.
- Designed the architecture, created C++ codes, conducted testing.
- Managed external development teams and reviewed their deliverables.
- Communicated with our clients and local workers to arrange schedules and report problems.