josie
Software Engineer at 2140-dev
Summary
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RockstarJosie is a software engineer with 11 years of experience focused on backend development, automation, and quality assurance, particularly in cryptocurrency client implementations. As an active contributor to Bitcoin Core and Peercoin, she has improved test coverage, modernized type checking with mypy, and refactored critical modules like Addrman to boost maintainability. Her work includes deprecating legacy fee fields and adding functional tests, showing a pragmatic approach to evolving protocol software without breaking compatibility. Comfortable across testing, tooling, and RPC changes, she brings a blend of careful QA mindset and systems-level thinking to open-source projects. Colleagues describe her as a bit of a Bitcoin core nerd who quietly improves reliability behind the scenes.
11 years of coding experience
Github Skills (14)
mypy10
bitcoin10
c-language10
bitcoins10
cprogramming-language10
python10
cicd10
blockchain10
testing10
cryptocurrency9
rpc9
decentralization8
cryptography8
staking7
Programming languages (19)
Github contributions (5)
bitcoin/bitcoin
Jun 2021 - Dec 2022
Bitcoin Core integration/staging tree
Role in this project:
Back-end Developer & Automation Engineer
Back-end Developer & Automation EngineerContributions:470 reviews, 46 commits, 31 PRs in 1 year 6 months
Contributions summary:Josie primarily contributed to the Bitcoin Core integration/staging tree by modifying and adding tests and updating code to improve and maintain the codebase. The user's work involved deprecating fee fields from mempool entries, enabling mypy checking, and adding a functional test for deprecatedrpc=fees. The user also worked on refactoring and improving the Addrman module by changing return types and improving tests.
cryptographyp2pc-plus-pluscryptocurrencybitcoin-core
peercoin/peercoin
Jun 2021 - Dec 2021
Reference implementation of the Peercoin protocol.
Role in this project:Backend & QA Engineer
Backend & QA EngineerContributions:14 commits in 6 months
Contributions summary:Josie primarily contributed to improving the codebase's reliability and maintainability. They fixed a Jupyter integration issue by adding a dummy argument. Their work involved installing dependencies for linting, enabling mypy checking for missing imports, and updating test files to align with changes. Additionally, the user made modifications to RPC functionalities, deprecating certain fee fields and adjusting tests to reflect these changes.
proof-of-stakeblockchaindecentralizedminablecryptocurrency
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