Justin Hill
Senior Engineer, Infrastructure Security at mise-en-place
Poulsbo, Washington, United States
Summary
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RockstarJustin Hill is a Senior Infrastructure Security Engineer with eight years of hands-on experience building developer platforms and modernizing large-scale Java ecosystems at Amazon and AWS. He led the Java development experience for Amazon from 2020–2023, bringing decades-old build systems under control for ~80k builders and ~570k projects so reliably he could take time off without being paged. His work spans access control, platform and productivity engineering, distributed systems, and identity SDKs, with tactical contributions across Rust, Go, Zig, and Python. Justin advises and contributes to developer tooling like mise-en-place and maintains a long-running personal tinkering practice, producing programming languages, web games, and design work on so.dang.cool. He combines a pragmatic, ops-minded approach to large org problems with a philologist’s appreciation for plain text, pipes, and concatenative programming. Based in Poulsbo, WA, he brings a rare blend of scale-focused infrastructure experience and creative side projects that surface novel solutions to entrenched engineering challenges.
8 years of coding experience
11 years of employment as a software developer
Stackoverflow
51reputation
5kreached
2answers
1question
Github Skills (200)
nix10
package-management10
python10
http10
sbom10
javascriptcore10
ruby10
security10
http-client10
automation10
bundler10
specification10
transpiler10
jsx10
aiohttp10
Programming languages (55)
Github contributions (5)
booniepepper/nixpkgs
Jan 2022 - Jul 2026
Nix Packages collection
Contributions:70 pushes, 32 branches in 4 years 6 months
nixosnix-packages
so-dang-cool/findup
Jul 2021 - Aug 2025
Find parent directories
Contributions:7 releases, 1 PR, 28 pushes in 4 years 2 months
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