AI-focused full-stack engineer building reliable agentic systems and developer tools. Previously at Klarna and Alipay. Based in Hangzhou.
A personal travel narrative from Berlin tracing the forgotten grave of John Rabe—the German who saved over 200,000 lives during the Nanjing Massacre. Blending history, memory, and a Chinese perspective, this story explores how Rabe is remembered differently in Germany and China.
A two-day kayaking trip through Müritz National Park, one hour from Berlin by train. Connected lakes, quiet campsites, a footpath disguised as a canal, and a humbling crossing of Germany's largest inland lake.
A travelogue from a week hiking and climbing via ferrata across Italy's Brenta Dolomites — from Rifugio Tuckett to Agostini, with conversations along the way.
A conversation-driven note on what a tiny task queue teaches about batching, event loops, and DOM work.
A deep dive into how I used embeddings and LLMs to automate a complex product categorization migration.
Improving time-slicing with coroutine and JavaScript generators
Time-slicing With Continuation-passing Style to handle performance bottleneck
A practical RxJS walkthrough for building a typewriter effect by encoding time as streams of values.
A step by step guide to implement a Trie in JavaScript
This article aims to teach you how to implement lenses in vanilla JavaScript. You'll appreciate the expressiveness of functional programming.
An RxJS walkthrough for modeling parabolic animation as streams of time and position.