Tokyo Climbing Index
A curated, minimalist index of Tokyo bouldering gyms, with a map and filters for the training features that matter.
Software developer · Tokyo
I make small, useful software for everyday systems.
I’m Zach. I build focused tools for the things I care about—from finding a climbing gym to understanding time spent online.
Click to meet Benji.
01 / Selected work
Things I’ve made
YouTube Time Tracker
A Chrome extension that measures time wasted doomscrolling on YouTube.
Smart Kettle Controller
An ESP32 temperature sensor and smart-plug controller that stops and reheats a kettle around a target temperature.
02 / Away from the keyboard
I climb and make photographs.
When I’m not working, you can find me walking around with a camera, photographing whatever catches my eye. Here, I keep a daily photo journal of the places I’ve explored.
Visit my photography journal ↗03 / Experience
Places I’ve worked
2026—Present
Software Engineer
Recho
Building voice-AI products for enterprise customer operations.
2024—2025
AI Tutor
xAI
Multimodal data annotation for language-model training and evaluation.
2023
Software Engineer Intern
SPAN
Automated data pipelines with Prefect and made operational data legible in Datadog.
2021
Software Engineer Intern
Trend Micro
Built a network-health monitor with ELK and Slack alerts.
04 / Say hello
Have a thoughtful project in mind?
I’m always happy to talk about any cool software ideas, climbing, or brewing a good cup of coffee.