Michał Muskała
Staff Software Engineer at WhatsApp
England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolMichał Muskała is a Staff Software Engineer with 12 years of experience, currently at WhatsApp in England, specializing in Elixir and Erlang for high-performance networking, databases and compiler-level optimizations. He is an active open-source maintainer and contributor to major projects including Elixir, Phoenix, Plug, Erlang/OTP and MongoDB drivers, where his work has improved core performance, JSON encoding, and developer ergonomics. His contributions include language-level enhancements (Mix suggestions, optimized Enum/Stream functions), a blazing-fast pure Elixir JSON library, and practical database adapters used in production. Comfortable moving between systems-level compiler fixes and application-layer features, he brings a rare blend of low-level optimization experience and pragmatic backend engineering. He also speaks and trains on these technologies, reflecting a commitment to community education beyond code.
12 years of coding experience
9 years of employment as a software developer
Computer Engineering, Computer Engineering at The Silesian University of TechnologyPhysics, Physics at University of Warsaw
Polish, English, French, Spanish, German
Stackoverflow
11,148reputation
307kreached
124answers
0questions
elixir
top-1%
phoenix-framework
top-1%
Github Skills (43)
erlang10
html-escape10
elixir10
text-manipulation10
testing10
boolean-operations10
databases10
mongodb-database10
driver10
performance-optimization10
bson10
phoenix-framework10
encoding10
compiler-optimization10
functional-programming10
Programming languages (22)
Github contributions (5)
elixir-mongo/mongodb_ecto
May 2015 - Aug 2017
MongoDB adapter for Ecto
Role in this project:
Back-end Developer
Back-end DeveloperContributions:188 commits, 26 PRs, 176 pushes in 2 years 3 months
Contributions summary:Michał primarily contributed to the development of a MongoDB adapter for the Elixir Ecto library. Their commits focused on implementing core functionalities such as database connection management, BSON encoding and decoding, and basic query support including find, insert, update, and delete operations. They also added support for migrations, database management, and the introduction of partial update operations.
mongodbectoelixir
michalmuskala/jason
Jun 2017 - Oct 2022
A blazing fast JSON parser and generator in pure Elixir.
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 releases, 6 reviews, 172 commits in 5 years 5 months
Contributions summary:Michał's primary contribution was the implementation of an Elixir JSON encoder, adding functionality for handling different escape strategies and map modes. The user refactored the string encoding process and added support for a strict map mode, which checks for duplicate keys. Further contributions included adding a decimal decoding option and refactoring the argument handling. The work focused on enhancing the functionality and capabilities of the JSON encoding in the project.
elixirjson-parserjson
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