Zibi Braniecki
Member Of Technical Staff at Perplexity
Los Angeles, California, United States
Summary
🤩
Rockstar🎓
Top SchoolZibi Braniecki is a systems-oriented engineering leader with 15+ years building platform architecture, runtime infrastructure, and developer-facing foundations for companies like Perplexity, Amazon Lab126, and Mozilla. He specializes in making APIs and platforms evolve safely—balancing fast-moving product teams with durable, low-entropy interfaces and OS/runtime primitives across embedded and web environments. A long-time contributor to internationalization and web standards, Zibi has shaped ICU4X, Project Fluent, ECMA-402 tests, and MessageFormat work, bringing deep Unicode and localization expertise into platform design. He combines hands-on Rust and systems work with cross-org change management and mentoring, and has led launch-critical stabilization for multi-device OS projects. Based in Los Angeles, he blends standards‑level influence (TC39/Unicode Consortium) with practical engineering that enables teams to move quickly without building on sand.
15 years of coding experience
21 years of employment as a software developer
bachelor, BCom, Management/Sociology, bachelor, BCom, Management/Sociology at University of Victoriabachelor, Sociology, bachelor, Sociology at Kozminski UniversityComputer Science, Computer Science at WIT Academy
English, Polish
Stackoverflow
49reputation
2kreached
0answers
2questions
Github Skills (27)
parserator10
javascript10
parser10
abstract-syntax-tree10
testing10
formatting10
intl10
internationalization10
data-serialization10
text-formatting10
serialization10
deserialization10
localization10
api10
parsing10
Programming languages (23)
Github contributions (5)
projectfluent/fluent-rs
Jan 2017 - Dec 2022
Rust implementation of Project Fluent
Role in this project:
Backend Developer
Backend DeveloperContributions:40 releases, 39 reviews, 336 commits in 6 years
Contributions summary:Zibi implemented placeable parsing and external argument support for the Fluent-rs project, which is a Rust implementation of Project Fluent. The changes involved updates to the Abstract Syntax Tree (AST) and modifications to the parser to handle simple placeables and external arguments. They also added tests and improved error display within the syntax module.
l10nproject-fluentpluralftlrust
unicode-org/icu4x
Mar 2020 - Dec 2022
Solving i18n for client-side and resource-constrained environments.
Role in this project:Back-end Developer
Back-end DeveloperContributions:2 releases, 1244 reviews, 141 commits in 2 years 10 months
Contributions summary:Zibi primarily contributed to the `icu4x` project, which focuses on i18n for resource-constrained environments. Their work focused on the development of locale-related components, including the addition of a `Locale` class and implementing serialization/deserialization functionality. Furthermore, they extended the parser to process sample data. The commits demonstrate a focus on data-related aspects of the project.
environmentssolvingclient-siderusttranslation
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