Ze Jian

Singapore · notes from August 2026

Building agents, brewing matcha, and keeping notes on the interesting bits.

By day, I work at a unicorn startup. After hours, I build small experiments, run a home-based matcha business with my partner, and write down what I learn.

learning in public

@zejian99 @zejiantan

Now

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Work
Working at a unicorn startup in Singapore
Learning
Learning to build agents
Life
Exploring new hobbies and trying to be healthier

Writings

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Personal Assistant2026-07-184 min read
PA for my own life.
Making the Agent Visible2026-05-259 min read
Building a page that shows an AI agent's reasoning and tool calls in real-time.
Building a Chat Widget for My Personal Site2026-05-037 min read
The agentic assistant on my personal website.

Listening

Projects

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Agent Experimentslive

Exploring how to chain LLM calls into useful workflows.

ai · agents · python

Personal Websitelive

This site - built with Claude Code.

next.js · mdx · ai

Second Matcha Houselive

A home-based matcha business run with my partner.

e-commerce · f&b

From the desk

lately

Cover of Surrounded by Idiots by Thomas Erikson — current shelf · reading slowly

A terminal view of an agent experiment — latest rabbit hole · making agents visible

Timeline

Now →Building agents & learning

2025Started a home-based matcha business with my partner

2024First big boy job at a unicorn

2020–2024College — Competitive Dodgeball, Freshmen Orientation Projects

2018Entered national service

2009Took the plane for the first time