Sage Mitchell
Wire Harness Assembly Mechanic at Pathfinder Manufacturing
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolSage Mitchell is a seasoned engineer with 13 years of experience spanning backend development, DevOps, and build/release engineering, now working hands-on as a Wire Harness Assembly Mechanic in Seattle. Previously a Senior Research Software Engineer at Microsoft and a DevOps Director at IOHK, Sage has led CI/CD, cluster deployments, and incident response for large-scale blockchain and cloud systems. They contribute to open-source projects in systems and language tooling—improving the Idris language FFI, optimizing maze-solving algorithms, and hardening Cardano build and installer processes—demonstrating a mix of low-level systems thinking and practical performance tuning. Sage blends engineering craftsmanship with operational rigor: from fixing Windows file-locking and Unicode installer issues to implementing distributed tracing and security-advisory workflows. Comfortable switching between firmware-adjacent manufacturing work and complex software ecosystems, they bring a rare combination of pragmatic hardware skills and deep systems/software expertise.
13 years of coding experience
14 years of employment as a software developer
BS Computer Science, BS Computer Science at University of Massachusetts Amherst
Github Skills (37)
performance-monitor10
performance-analytics10
python10
windows-installer10
nsis10
cffi10
data-structure10
performance-measurement10
type-providers10
performance-analysis10
idris10
foreign10
ffi10
build-automation10
performance-tuning10
Programming languages (24)
Github contributions (5)
input-output-hk/cardano-sl
Jan 2017 - Oct 2018
Cryptographic currency implementing Ouroboros PoS protocol
Role in this project:
Backend & DevOps Engineer
Backend & DevOps EngineerContributions:1 release, 72 commits, 86 PRs in 1 year 9 months
Contributions summary:Sage primarily contributed to improving the stability and maintainability of the `cardano-sl` project. They fixed file-locking issues in the `UserSecret` module, preventing hanging processes on Windows. The user also addressed build and deployment issues, including fixing errors related to unicode printing in the cardano-launcher and ensuring detailed test reports in the CI/CD pipeline. These changes demonstrate expertise in system configuration and error handling within the Haskell codebase.
cardanocryptographyposadacryptographic
input-output-hk/daedalus
Feb 2017 - Dec 2018
The open source cryptocurrency wallet for ada, built to grow with the community
Role in this project:DevOps Engineer & Build & Release Engineer
DevOps Engineer & Build & Release EngineerContributions:65 commits, 75 PRs, 49 pushes in 1 year 10 months
Contributions summary:Sage focused on improving the Windows installer for the Daedalus cryptocurrency wallet. Their contributions involved fixing installation paths, enabling Unicode support, and adding version details to the installer. They also worked on building the uninstaller, code signing, and integrating the NSIS Simple Firewall plugin. Additionally, the user addressed issues in the cardano-launcher setup and the Windows shortcut configuration, and also implemented automatic certificate builds.
adablockchainwalletplutuscryptocurrency-wallet
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