Galen Liu

Network engineer — multi-cloud backbone, BGP, and the automation that keeps it honest.

I build and run networks at scale. Most of my work sits in the unglamorous middle of the stack: getting traffic between clouds and regions reliably, and writing the automation that stops me from touching forty devices by hand.

Concretely that means BGP design and policy across a multi-cloud backbone, running a multi-vendor estate (Cisco, H3C, Arista, FortiGate, Aruba, Meraki) without letting per-vendor quirks turn into per-site snowflakes, and keeping a source of truth the devices actually agree with.

I write here because the useful version of this knowledge mostly lives in other people’s scattered notes, and because writing something down is the fastest way to find out whether I actually understand it.

Writing

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Contact

Questions about something I wrote, or a network problem worth comparing notes on? Send a message and I’ll reply by email.

Prefer email? Write to REPLACE_ME@example.com.