Joe Sacher
SRE Principle at Casper Association
Greenwood, Indiana, United States
Summary
👤
Senior🎓
Top SchoolJoe Sacher is a principal SRE and engineer with 12 years of experience blending software, systems, and electrical engineering to build resilient infrastructure and embedded products. Currently focused on Casper Network validator support and node reliability, he has deep Rust backend and Prometheus metrics experience from contributing to the widely used casper-node project. His background includes shipping rugged hardware and custom PCBs for a decade-long Android tablet project, plus end-to-end Python tooling that slashed production testing time by 95%. Comfortable across low-level hardware bring-up to CI/CD, WASM smart contracts, and distributed systems, he’s equally at home optimizing node packaging and writing exercises that teach Rust fundamentals. Based in Greenwood, Indiana, Joe pairs pragmatic engineering with a curiosity for mechanical and electrical problem-solving that often surfaces in software-first roles.
11 years of coding experience
20 years of employment as a software developer
BS Electrical Engineering, BS Electrical Engineering at Rose-Hulman Institute of TechnologyJeffersonville High School
Github Skills (13)
algorithm10
tracks10
data-structures10
algorithms10
rust10
prometheus10
data-structure10
trie10
testing9
casperjs8
cas8
blockchain8
system-design8
Programming languages (10)
Github contributions (5)
casper-network/casper-node
Jul 2020 - Dec 2022
Reference node for CASPER protocol
Role in this project:
Back-end Developer & Systems Engineer
Back-end Developer & Systems EngineerContributions:83 releases, 155 reviews, 436 commits in 2 years 5 months
Contributions summary:Joe made contributions focused on improving the internal workings of the Casper node, specifically within the trie store and contract runtime components. These changes involved refactoring code, removing old metric styles, and introducing new metrics using Prometheus. Furthermore, the user was involved in merging updates to the code base, reflecting an understanding of the project's overall architecture and integration of different parts of the project.
ethereumcasperblockchaininternet-computercasper-network
exercism/rust
Jul 2017 - Sep 2017
Exercism exercises in Rust.
Role in this project:Back-end Developer
Back-end DeveloperContributions:12 commits, 14 PRs, 29 comments in 2 months
Contributions summary:Joe contributed to the Exercism Rust track by adding and improving exercises. They updated the `chrono` crate and modified the `gigasecond` exercise, demonstrating their understanding of time and date manipulation in Rust. Furthermore, the user added new exercises like `pig-latin`, `say`, `proverb`, `prime-factors`, `nth-prime`, `pythagorean-triplet`, and `clock`, providing example code for these problems.
rustexercismexercism-exercisesexercism-trackcommunity-contributions-paused
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.