Justin Sumiye

Honolulu, HI

Education

University of Hawaiʻi at Mānoa

B.S. Computer Science, cybersecurity concentration

In progress

Practical Software · Full-Stack Software Engineer

Remote

May 2025 – present

Built and launched a client survey and reporting platform in 10 weeks; it now hosts 900+ surveys and 70,000+ responses.
Cut survey creation and reporting time by approximately 60% with reusable templates, question banks, automated legacy survey mapping, and a report builder.
Added CORS controls, CSRF and XSS protections, and PDO prepared statements to PHP API endpoints backed by MySQL.
Handled a production website migration from Plesk to cPanel, including the full MySQL database transfer.
Converted web.config rules to Apache .htaccess and configured PHP settings and file permissions for the new hosting environment.

Korean Language Flagship Center · Web Developer

University of Hawaiʻi at Mānoa · Honolulu, HI

Sep 2023 – present

Built a PHP application to automate applicant decision letters and a React quiz used by 100+ students at Korean Culture Day.
Improved page load speed by 50% through caching and file compression.
Built application forms and a course simulation for a business-Korean class.
Built and repaired PCs, replaced components, and diagnosed hardware and software issues.

TubeReader

Personal project

Built a PHP and MySQL web app with a Railway-hosted Flask API that turns YouTube videos into articles in under 30 seconds.
Integrated MailCheck to block disposable email registrations at approximately 95% detection accuracy.

Hawaii Open Data Platform

Hawaii Annual Code Challenge finalist

Oct 2024 – Nov 2024

Finalist team project. Recreated the Hawaii Open Data Viewer with Next.js and Node.js. GPT-4 suggests datasets and charts, and the model key stays on the server.
Built the Info and Recent Datasets views with shadcn/ui and Tailwind, plus TypeScript filtering, sorting, and search.

Survey platform writeup builder, import, PDF reports

Manoa Menu three halls, four languages

Korean culture trivia 150+ plays

Decision letters FPDF on Flagship letterhead

SEED 2.0 network security labs

Computer and network security coursework

Used Linux commands, Wireshark, and Python Scapy in hands-on labs to inspect network traffic and study security behavior.

Languages JavaScript, TypeScript, PHP, Python, Java, C

Frameworks React, Next.js, Flask

Libraries Bootstrap, Material UI, jQuery, shadcn/ui

Databases MySQL, SQL, Firebase

Servers Vercel, Railway, Apache

Security Linux CLI, Wireshark, Scapy, web application security

Tools Git, GitHub, GitHub Actions, npm, Vite

Systems Plesk, cPanel, web configs, PHP configuration, server logs, file permissions, WordPress, SFTP, PC repair