Personal website of Timothy Andrew — software engineer, writer, and builder.https://timothya.com/https://timothya.com/blog/go-simd/https://timothya.com/blog/go-simd/Learning about Golang's assembler by building a simple SIMD-based `grep` alternative.Sun, 10 May 2026 00:00:00 GMThttps://timothya.com/blog/alignment-from-scratch/https://timothya.com/blog/alignment-from-scratch/Fine-tuning and aligning a pre-trained model from first principles.Sat, 28 Feb 2026 00:00:00 GMThttps://timothya.com/blog/ssh/https://timothya.com/blog/ssh/Make sshd completely inaccessible from the public internet for maximum security.Wed, 30 Nov 2022 00:00:00 GMThttps://timothya.com/blog/dns/https://timothya.com/blog/dns/Learning how DNS resolvers work by building a simple recursive resolver in Go.Fri, 29 Jul 2022 00:00:00 GMThttps://timothya.com/blog/git-stack/https://timothya.com/blog/git-stack/Stacked pull requests are a useful tool to make large changes comprehensible, but managing these stacks can be tricky. This post introduces the idea of stacked PRs, and goes over strategies and tooling to make managing these stacks easy.Fri, 23 Apr 2021 00:00:00 GMThttps://timothya.com/blog/private-static/https://timothya.com/blog/private-static/Using Lambda@Edge as an authentication layer for static websites hosted on Amazon S3.Tue, 03 Nov 2020 00:00:00 GMThttps://timothya.com/blog/ebook-converter/https://timothya.com/blog/ebook-converter/Notes from building (over a weekend) web service that can convert e-books to MOBI and push them to my Kindle via email.Fri, 30 Oct 2020 00:00:00 GMThttps://timothya.com/blog/vmware-debian-dual-network/https://timothya.com/blog/vmware-debian-dual-network/Connect a VMWare+Linux VM to multiple networks simultaneously, to create a fast (wired) computer-to-computer network while also connected to a home network.Fri, 23 Oct 2020 00:00:00 GMT