Charles Vien
Product Engineer, Applied AI at PostHog
Seattle, Washington, United States
Summary
🤩
RockstarCharles Vien is a product engineer and founder with 12 years of experience building scalable systems and real-time platforms used by millions. He has led engineering from 0→1, architecting infrastructure that supported 10K+ concurrent users and shipping backend microservices through React frontends. As co-founder/CTO of gaming startups he scaled a Minecraft server to top-10 global player counts, implemented a hot-reload JS-on-JVM framework enabling sub-second deployments, and cut infrastructure costs dramatically via custom networking and Kubernetes orchestration. More recently at PostHog he’s building Array, a desktop orchestrator that turns product signals into actionable AI-driven tasks, and kickstarted a Unity SDK to expand games integrations. Comfortable across cloud ops, data pipelines, and real-time systems, he pairs deep systems engineering with a founder’s product instincts and a playful roots-in-gaming perspective that still informs his technical creativity.
13 years of coding experience
11 years of employment as a software developer
English
Github Skills (51)
javascript10
observability10
cdp10
multiplayer10
python10
data-warehouse10
typescript10
posthog10
feature-flags10
web-analytics10
analytics10
ab-testing10
session-replay10
go10
tailwindcss10
Programming languages (7)
Github contributions (5)
PostHog/code
Nov 2025 - Jul 2026
The era of self-driving development is here
Contributions:78 reviews, 215 PRs, 1563 pushes in 8 months
charlesvien/charlesvien.com
Jul 2020 - Jul 2026
My personal website
Contributions:23 PRs, 99 pushes, 9 branches in 6 years 1 month
reactnextjs
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.