Joseph Antonakakis
Engineering Manager at Hello Interview
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolJoseph Antonakakis is an engineering manager and former staff engineer with 11 years in software, currently leading teams at Notion from New York after a progression through Meta and multiple senior technical roles. He blends hands-on systems work—contributing to high-profile open-source projects like VSCode's language server and improving test infrastructure for the widely used Python formatter Black—with people leadership and delivery ownership. Joseph has a track record of shipping incremental, robust solutions (e.g., implementing IncrementalTextDocument and piece-tree integration) and improving reliability through test automation. He teaches and coaches technical interview skills, demonstrating a commitment to developer growth and clear technical communication. Comfortable across full-stack and systems-level concerns, he pairs strong engineering judgment with mentoring and process-driven execution. His background in research and startup product builds hints at a pragmatic, curiosity-driven approach to solving complex engineering problems.
11 years of coding experience
10 years of employment as a software developer
Bachelor’s Degree Computer Science, Bachelor’s Degree Computer Science at Cornell University
English
Github Skills (18)
unit-testing10
javascript10
pytest10
python10
testing10
typescript10
formatter10
language-server-protocol10
formatters10
typescript-types10
typescripts10
test-automation10
asyncio9
nodejs9
aiohttp9
Programming languages (10)
Github contributions (5)
psf/black
Aug 2019 - Oct 2019
The uncompromising Python code formatter
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:6 commits, 6 PRs, 26 comments in 2 months
Contributions summary:Joseph contributed significantly to the testing infrastructure of the `black` code formatter. They fixed existing tests, particularly related to the `blackd` API and unstable formatting, and added new test cases. Their work included modifying test configurations, ensuring test coverage, and addressing potential bugs. This highlights a focus on improving the reliability and stability of the code formatter through comprehensive testing.
python-codepre-commit-hookpythongofmtcodeformatter
microsoft/vscode-languageserver-node
Apr 2019 - May 2019
Language server protocol implementation for VSCode. This allows implementing language services in JS/TS running on node.js
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:12 commits, 1 PR, 30 comments in 1 month
Contributions summary:Joseph focused on enhancing the language server protocol implementation, primarily by adding incremental document synchronization features and related tests. They implemented the `IncrementalTextDocument` class, integrated piece-tree dependency, and ensured the synchronization logic functioned correctly. Their contributions involved modifications to both server-side logic and associated test cases within the project. The user demonstrated expertise in the language server protocol and text document management.
node-jsvscodevscode-extensionserver-protocollsp
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