Xavier Chanthavong
I am an independent software consultant and currently building Woosah, a startup working on solving problems in the operational assurance space. I love all kinds of software and have spent time deepening my knowledge across full-stack development, systems programming, and data science and machine learning. I write about how software is designed, shipped, and maintained.
Before Woosah, I was a senior engineer at Atsign. Through Chanthavong Consulting Inc., I've served clients across technology startups, public-sector records, mining services, healthcare, media and entertainment, and recreation since 2017.
Writing
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And how I've made it work better for me
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A simple framework for using AI agents to design high-quality software.
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A case for lazy context, small AGENTS.md files, and using plain Markdown instead of skill sprawl.
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A practical workflow for using AI without giving up good greenfield decisions.
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The Evolution of UX: Why Security is the New Engine of Innovation
Work
Woosah Technologies
Co-Founder & CPTO
Building operations-assurance infrastructure for distributed systems.
Atsign
Senior Engineer
Worked on the atSDK and related open-source tooling across Dart, C, and networking. Continues as an advisor.
Independent consulting
Software consultant
Engagements across technology startups, public-sector records, mining services, healthcare, media and entertainment, and recreation.
Open source
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My highly opinionated coding agent; built on top of pi.
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A native macOS utility for swapping windows between dual monitors.
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Two of the more notable projects from my Atsign days.