Essam Ewaisha
Software Engineer at Meta
United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolEssam Ewaisha is a software engineer with 11 years of experience focused on mobile and backend systems, currently at Meta working on React Native tooling. He has deep open-source contributions to high-profile projects like Hermes and Metro, adding Hermes minidump symbolication, function-offset support in source maps, and improved stacktrace fidelity for React Native debugging. His background spans startups and industry teams—freelancing on mobile apps, building native Android products, and shipping ML-driven features during an award-winning Bloomberg internship. Known for shipping pragmatic tooling that bridges native and JS runtimes, he combines systems-level insight with product-minded execution. Notably, his contributions helped make debugging Hermes-compiled code significantly more reliable for the broader React Native ecosystem.
10 years of coding experience
4 years of employment as a software developer
Alexandria University
English, Arabic, French
Stackoverflow
439reputation
205kreached
11answers
5questions
Github Skills (22)
debugging10
debug10
javascript10
c-language10
react-native10
sourcemaps10
javascript-engine10
bundler10
script-engine10
cprogramming-language10
performance-analysis9
json7
swift6
ui-testing6
firebase6
Programming languages (5)
Github contributions (5)
facebook/metro
Sep 2019 - Nov 2019
🚇 The JavaScript bundler for React Native
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 11 commits, 3 pushes in 2 months
Contributions summary:Essam primarily focused on enhancing the metro-source-map package within the React Native bundler repository. Their contributions involved extending the source map functionality to incorporate Hermes function offsets, enabling support for debugging and performance analysis of Hermes-compiled JavaScript code. They also worked on redesigning and propagating these offsets in composed source maps. Additionally, they implemented the symbolication of JavaScript stack traces from Hermes minidumps.
reactbundlerreact-nativejavascriptflowtype
facebook/hermes
Sep 2019 - Oct 2019
A JavaScript engine optimized for running React Native.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 commits in 28 days
Contributions summary:Essam contributed to the Hermes JavaScript engine by adding features related to minidump generation, including the addition of `SourceURL` and `CJSModuleOffset` for improved JavaScript stacktrace generation. They also redesigned the `x_hermes_function_offsets` feature within the source map generation, enhancing the functionality for supporting non-contiguous indexing of function offsets. Furthermore, they added validation and help text to the `hbcdump` tool.
javascript-enginereactreact-nativejavascriptoptimized
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