Justin Moon
Summary
🤩
RockstarJustin Moon is a product-focused software engineer with 10 years’ experience delivering backend systems from cradle to grave, based in Springfield, Ohio. He brings deep open-source Rust and Python expertise, contributing to major crypto projects like Core Lightning, Fedimint, and BDK where he improved plugin initialization, PSBT handling, and security-focused integration tests. He pairs pragmatic DevOps and build automation skills—shown in xonsh CI and environment-manager work—with a strong attention to developer ergonomics and error metadata. Known for quietly hardening distributed payment systems and solving edge cases that improve production reliability, he enjoys making core libraries safer and easier for other engineers to use.
11 years of coding experience
Github Skills (35)
min10
python10
lightning-network10
bitcoin-wallet10
testing10
plugin-development10
bitcoin10
bitcoins10
command-line10
descriptor10
error-handling10
rust10
shell10
tinyscript10
p2p10
Programming languages (29)
Github contributions (5)
fedimint/fedimint
Apr 2022 - Jan 2023
Federated E-Cash Mint
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:1491 reviews, 549 commits, 777 PRs in 9 months
Contributions summary:Justin primarily contributed to improving the codebase's security and functionality by modifying the scripts, the client-side interface, and the core modules. The user refactored the `startfed.sh` script, updated the integration tests by adding the channel for the lightning node, and added extra parameter to `gw_configgen.rs`. The user also tested for edge cases related to security, and added functionality to the client side interface.
e-cashethereump2plightningblockchain
bitcoindevkit/bdk
Nov 2020 - Jan 2021
A modern, lightweight, descriptor-based wallet library written in Rust!
Role in this project:Back-end Developer
Back-end DeveloperContributions:23 reviews, 7 commits, 8 PRs in 1 month
Contributions summary:Justin focused on enhancing the `bdk` library, specifically adding features related to PSBT output scripts, and refactoring to improve codebase maintainability. They modified code to include redeem and witness scripts for PSBT outputs, and optimized code by removing unnecessary `Arc` wrappers for `SignersContainer` arguments. Furthermore, the user addressed a crucial aspect of the library by adding metadata to the `InsufficientFunds` error to improve usability.
wallet-libraryrustdescriptorminiscriptwallet
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