Jethro Grassie
Advisor at TitanMining
New York, New York, United States
Summary
🤩
RockstarJethro Grassie is an experienced back-end developer and performance engineer with a decade in software, currently advising at TitanMining in New York. He specializes in system-level optimizations for high-performance and privacy-focused applications, contributing to well-known open-source projects like Monero and the RandomX proof-of-work algorithm. His work on RandomX demonstrates deep CPU and memory-management expertise—introducing thread affinity and virtual memory tweaks to boost benchmarks—while his Monero contributions improved CLI usability, I2P support, and RPC capabilities. Comfortable bridging low-level engineering and developer-facing tooling, he brings both production-grade performance tuning and pragmatic user experience improvements. Colleagues value his blend of crypto-domain knowledge and hands-on systems craftsmanship.
10 years of coding experience
Stackoverflow
101reputation
0reached
0answers
0questions
Github Skills (19)
c-language10
multithreading10
command-line-interface10
affinity10
cryptocurrency10
monero10
performance-optimization10
cryptography10
blockchain10
command-line10
cprogramming-language10
cli10
algorithm9
algorithms9
implement9
Programming languages (11)
Github contributions (5)
tevador/RandomX
Jun 2019 - Nov 2021
Proof of work algorithm based on random code execution
Role in this project:
Back-end Developer & Performance Engineer
Back-end Developer & Performance EngineerContributions:6 commits, 4 PRs, 21 comments in 2 years 5 months
Contributions summary:Jethro primarily focused on performance optimizations and system-level configurations within the randomx proof-of-work algorithm. They introduced thread affinity settings, demonstrating an understanding of CPU core management for improved benchmark results. Further contributions included modifying the virtual memory management and applying fixes related to thread handling, likely to improve compatibility across different platforms and ensure correct behavior.
random-codeexecutioncode-executionproof-of-work
monero-project/monero
May 2017 - Nov 2021
Monero: the secure, private, untraceable cryptocurrency
Role in this project:Back-end Developer
Back-end DeveloperContributions:28 reviews, 30 commits, 32 PRs in 4 years 6 months
Contributions summary:Jethro primarily contributed to the Monero cryptocurrency project by implementing and improving features related to the command-line interface (CLI) and daemon. This included adding readline support for improved user interaction, fixing multiline output issues, and improving the prompt's visual presentation and behavior. Furthermore, the user integrated i2p support and added RPC enhancements for retrieving transfer information and block template generation.
securecryptographycmakeuntraceableprivacy
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