Caio Lima
Compiler Engineer at Igalia
Bahia, Brazil
Summary
🤩
Rockstar🎓
Top SchoolCaio Lima is a compiler engineer with 13 years of experience focused on JavaScript runtimes, language features and kernel-related topics, currently working at Igalia. He blends deep technical work—implementing language features and optimizations—with prior leadership experience as an engineering manager for search and legal research teams. Caio has contributed to high-profile open-source projects including ECMAScript repos (tc39/ecma262 and test262), where he both refined the spec and added conformance tests for nuanced arguments-object behaviors. His background spans full-stack product development and research, from co-founding a SaaS platform built on Rails to machine learning research using Kinect sensors. Based in Bahia, Brazil, he combines hands-on compiler engineering with a track record of clear technical writing and pragmatic UX-driven contributions.
13 years of coding experience
10 years of employment as a software developer
Bachelor’s Degree, Computer Science, Bachelor’s Degree, Computer Science at Universidade Federal da BahiaTecnico, Tecnologia da Informação, Tecnico, Tecnologia da Informação at Instituto Federal de Educação, ciência e tecnologia - BAMaster's degree, Computer Science, Master's degree, Computer Science at Universidade Federal de Minas Gerais
English, Portuguese
Github Skills (10)
html10
css10
javascript10
ui-design10
ecmascript10
documentation10
testing10
user-experience9
exp9
firefox9
Programming languages (7)
Github contributions (5)
tc39/test262
Jan 2017 - Jan 2021
Official ECMAScript Conformance Test Suite
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 review, 73 commits, 59 PRs in 4 years
Contributions summary:Caio contributed to the `tc39/test262` repository, which focuses on ECMAScript conformance testing, by adding test cases to validate the behavior of JavaScript's `arguments` object. The primary focus of the contributions was on testing how property descriptors are affected when the descriptors of mapped arguments properties are modified in various ways. The user's work involved writing and modifying JavaScript code to verify the correct functionality of the `arguments` object under different descriptor configurations, ensuring compliance with the ECMAScript specification.
javascriptconformancetc39typescripttests
tc39/ecma262
Apr 2019 - Oct 2020
Status, process, and documents for ECMA-262
Role in this project:Technical Writer
Technical WriterContributions:8 reviews, 6 commits, 4 PRs in 1 year 6 months
Contributions summary:Caio's contributions primarily involve modifications to the ECMAScript specification document. Their work focuses on enhancing the clarity, accuracy, and consistency of the text, with changes including updates to numeric types, mathematical operations, and string handling. They are responsible for correcting specification errors, adding features like "BigInt," and ensuring proper handling of various numeric values. Their work significantly contributes to the refinement and precision of the ECMA-262 specification.
javascriptstatusecmascriptecma
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