About

I'm Xiujun Ma — a software engineer who runs production systems on FreeBSD and writes about the infrastructure behind modern web apps, AI agent workflows, and the unglamorous glue that keeps things running.

This site covers three areas I work in daily: FreeBSD and BSD operations (ZFS, jails, pf, pkgbase, upgrades), AI-powered development workflows (Claude Agent SDK, MCP, n8n, self-hosted models), and modern web runtimes (Next.js in production, hardening, deployment). Everything I publish is tested on real hardware, not summarized from docs.

• Self-hosting production workloads on FreeBSD
• Building and operating AI agent runtimes on indie infra
• Next.js + React deployment patterns and security
• Practical Unix systems writing with working commands

• $ github
• $ linkedin
• $ twitter
• $ email

For consulting inquiries or collaborations: see my resume and reach out via any of the profiles above.