Brewed on curiosity.

Rikuto Hashizume

zume2.dev@gmail.com

About Me

Immersed in music since childhood, and having experienced changes in my own hearing, I came to face the question: "How do we design musical experiences?" I want to be someone who can find the complexity of the world genuinely interesting — as it is. Music, perception, technology — standing on a deep understanding of that complexity, I want to bridge people living in different contexts. Explaining, dialoguing, building bridges. That is how I want to reach out to the wider world. Currently researching HCI and music accessibility at the Ochiai Lab, University of Tsukuba, while continuing to build as an engineer.
Rikuto Hashizume

Affiliation & Education

Certifications

  • Nov 2022EIKEN Grade Pre-1
  • Sep 2024Fundamental Information Technology Engineer
  • Oct 2024Regular Driver's License
  • Feb 2026E-Certification (JDLA)

Internships & Events

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LectureFeb 2026

E-Certification Preparation Course (Completed & Passed)

Acquired advanced AI engineering knowledge connecting deep learning fundamentals to E-Certification qualification.
Tech stack: Python(PyTorch) / Numpy / Applied Mathematics / Model Optimization / Backpropagation

InternshipDec 2025 - Present

Contract Engineer

Database migration (Supabase) and feature improvements for a business support application that centrally manages advertising and listing information across multiple web services.
Tech stack: Go / TypeScript / Supabase

LectureOct 2025

Security Mini Camp 2025 Online (IPA) - Participated

Cross-disciplinary learning covering LLM application threat analysis, multi-agent systems, and RFC-based protocol implementation.
Tech stack: Rust / Python / x86 Assembly / LLM Security / Reverse Engineering

InternshipSep 2025

Logglass 1-Week Engineer Intern

Participated as a software engineer. Developed a management support system based on Domain-Driven Design (DDD). Learned agile development and clean architecture.
Tech stack: Kotlin / TypeScript / SQL / DDD / Agile/Scrum / Clean Architecture

InternshipSep 2025

Works Applications 1-Week DX Planning Intern

Participated as a DX planner. Created business efficiency improvement proposals from a user perspective.
Tech stack: DX Strategy / Business Process Analysis / User Research

LectureSep 2025

Security Mini Camp 2025 Yamanashi (IPA) - Participated

Intensive hands-on training on robust class design using modern C++ standards, and analysis and defense techniques against phishing sites and DDoS attacks.
Tech stack: C++ / PHP / Malware Analysis

Projects

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Portfolio Site Development

This site itself is my first work. A fully static portfolio site themed around coffee, built with Next.js (App Router) and deployed on Cloudflare Pages.

Corporate Website Development
(Earth Re Pure Inc.)

Implemented and maintained a corporate website as a volunteer for an acquaintance's company. Also handled server contracts and domain transfers.

Deep Learning × Art:
Model Accuracy Improvement Experiment

Conducted an experiment to improve accuracy for the art domain by fine-tuning an image captioning model.

HR Data Analysis Using
Machine Learning Models

Conducted EDA and model building from CSV files, proposing measures to improve employee turnover rates.

Blog

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Medium

Building a Time Bomb Game with only a starter Kit

My First Electronics Project with Elegoo Super Starter Kit

Medium

My First Exhibition with p5.js

I recently exhibited my piece, “Mandala Structure Transformed by Distance,” at a university exhibition called “Siiiice.”

Medium

[First Post]: My Journey to Synthesize Data, Art, and Business Strategy

A self-introduction and the philosophy behind my journey.

Hobbies & Interests

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    Music

    Enjoying live concerts and festivals, and playing electric guitar and piano.

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    Sports

    Skiing, tennis, and soccer.

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    Movies

    Favorite films include LEON, The Invisible Guest, and Harry Potter series.

  • •

    Travel

    Exploring new places and cultures.

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    Games

    Enjoying various video games.

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    Personal Development

    Personal projects, English learning, and participating in Kaggle competitions.