NeoShowcase
traP’s internal hosting platform. I implemented the dashboard frontend.
My role: Team project · Dashboard frontend and Gikuten presentation
Results: 1,000+ running apps · Gikuten 2023 final round · GMO Internet Company Award
Institute of Science Tokyo student / Web engineer & VR creator
pikachu0310
I love making things that feel good to use!
I build web services, VRChat worlds, and games.
My main focus is backend development in Go.
I turn ideas into projects people can actually use.
Backend developmentGo / API / DBVR & game creationVRChat / UnityShow or hide technical skills
Backend & Data
- Go
- HTTP / REST API
- MySQL / MariaDB
- Echo / sqlx / Goose
- OpenAPI / oapi-codegen
- WebSocket / Realtime
- Profiling & tuning
- Python
- SQLite
- LiveKit / WebRTC
- Rust
- Ruby / Rails
Infrastructure & Tools
- Linux / systemd
- Git / GitHub
- Docker / Compose
- OCI
- Cloudflare / Tunnel
- Nginx / load analysis
- Nix / NixOS
- GitHub Actions / CI
- AWS / EC2 / GCP
- Kubernetes
Web & Application
- TypeScript
- Deno
- HTML / CSS
- JavaScript
- React
- Astro
- Node.js
- Vite / VitePress
- Vue
VR & Game
- Unity / C#
- VRChat SDK / Udon#
- Shader / HLSL
- Blender / 3D Modeling
- Roblox Studio / Luau
AI & Agent
- Codex
- MCP / Skills
- AI agent design & operations
- Claude Code
- LLM API / Tool Use
★★★★★ Core strengths★★★★☆ Regular project use★★★☆☆ Project experienceI use other tools as each project calls for them.
A map of my work and interests
My life & interests (Japanese)
MAIN WORKS
Selected projects
Web services, VRChat worlds, and tools I’ve built or helped develop.
Internal PaaS 
VRChat world Massive Medal Pusher
Cloud saves and a Go backend for a giant medal-pusher game in VRChat.
My role: Team project · Early world implementation, Go backend and website
Results: 3.2M visits · 50K favorites · 1,700 peak concurrent users
Realtime communication traQ — Calls & screen sharing
Voice calls and screen sharing for traQ, traP’s community messenger.
My role: Team project · Backend maintenance and call integration
Results: 2024 winter hackathon — Grand prize · Integrated into traQ and used in production
VRChat world A World Where Mascots Lick You
A VRChat world where animated mascots lick you.
My role: Collaborative project · World development and interactive effects
Results: Published on VRChat · 40K visits · 5K favorites
Performance engineering ISUCON
Web performance competitions, plus a beginner workshop and teaching materials I wrote.
My role: Workshop author and instructor · Competed in a team of three
Results: ISUCON13 — Student rank: 6th · ISUCON14 — Student rank: 5th
Web app MaiRec
A score tracker for the rhythm game maimai. I built its rating history and suggestions for what to play next.
My role: Solo project · Design, development and operation
Results: Solo project · Public web app
PROJECTS / ACTIVITIES
Projects & activities
Team projects, open source, workshops, and competitions. Many are with traP, the tech club at Institute of Science Tokyo.
Recommended · 19 items
Read the project notes (Japanese) Browse my pull requests (new tab) Read the workshop project notes View the official results (Japanese) (new tab) Read the project notes (Japanese) Read the event journal (Japanese) (new tab) Read the project notes Play the game (new tab) Read the project notes Read the course materials (Japanese) (new tab) Read the article (Japanese) (new tab) Read about the chapter Read how the system works (Japanese) (new tab) Read the project notes Read the project notes (Japanese) Explore the experiment notes (Japanese) View the results post (Japanese) (new tab) View the results post (Japanese) (new tab) View the results post (Japanese) (new tab)
CONTACT
Get in touch
Email me or message me on X about a project, a technical question, a talk, or a workshop.