Jun 1
When Prompt Engineering Hits a Ceiling
For the last two weeks I've been stuck on the same bug in ResumeMatch. The resume rewrite pass was producing edits that looked plausible at first gla...
7 min read
Writing
Notes on systems, LLMs, and the industry building them.
I'm Wenhao, a software engineer. I write up system design problems I've worked through, what I'm learning about LLMs, notes from shipping side projects like ResumeMatch, and the occasional take on layoffs and where the industry is heading.
22 postsSince 2025
Mar 14
Debugging CORS and Rate Limiting in a Serverless App
Happy Saturday! Or at least it was supposed to be. Two hours ago I cracked open ResumeMatch to check something quick and walked straight into a blan...
6 min read