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I'm Alexander, aka Birkhoff on the Internet. I'm a software designer, building software for over 10 years, including ones that over a million people use daily. I also build secure and repeatable hybrid cloud infrastructure.

• 🔨 My favourite programming languages are TypeScript and Python 3.
• 🌱 Made several contributions to open source since 2013, to projects such as Clash, jsDelivr, Crater and a beginner's guide to AI.
• ⚡ Besides software engineering, I'm into web3 development and blockchain technology as well.
• 💬 I speak Mandarin Chinese, English and Italian.
• 📫 Get in touch by email at [email protected] (PGP) or Twitter (@birkhofflee).

In the overview below you will find my most recent work experience:

Site Reliability Engineer (SRE)
Safemoon
Topics: RHEL, Ansible, Terraform, Linux Containers, Prometheus, WireGuard, MySQL Cluster
Led the operations team to maintain HA of over 20 servers and over 100 containers. Designed a mesh VPN setup for the hybrid cloud infrastructure.

In the overview below you will find the featured posts of my blog:

• Policy routing with Clash (2022-08-26)
• Extending size of a EBS mounted on an active EC2 Instance (2022-01-05)
• Finding out a problem of gpg-agent (2022-01-05)

I would like to thank everyone who has supported me in my career. If you would like to get in touch, the best tway to reach out would be via email or Twitter.