Yoann Padioleau
Software Engineer at r2c
Umbria, Italy
Summary
🤩
Rockstar🎓
Top SchoolYoann Padioleau is a software engineer with 13 years of experience specializing in program analysis, parsing and static security tooling, currently applying his expertise at r2c on Python and JavaScript analysis. With a strong research background including a PhD and postdocs at INRIA and UIUC, he blends academic rigor with practical engineering from a long stint at Facebook to current open-source security work. He is an active contributor to Semgrep (improving security rules and adapting them to core changes) and has improved core parsers in projects like difftastic and pfff, demonstrating deep language-agnostic parsing skills across Python, Java, JavaScript, Go, Kotlin and PHP. Known for quietly improving core tooling rather than flashy features, he focuses on parsing accuracy, regression fixes and vulnerability detection that materially raise the quality of code analysis. Based in Umbria, Italy, he combines a researcher’s attention to formal correctness with hands-on backend development experience in large, collaborative codebases.
13 years of coding experience
7 years of employment as a software developer
postdoc, Doctorat, computer science, ingenieur, computer science, postdoc, Doctorat, computer science, ingenieur, computer science at University of Illinois Urbana-Champaign
Université de Rennes I
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (32)
kotlin10
tree-sitter10
static-analysis10
parser10
python10
elixir10
semgrep10
java10
ocaml10
security10
javas10
php10
code-analysis10
go10
parsing10
Programming languages (27)
Github contributions (5)
semgrep/semgrep
Dec 2019 - Jan 2023
Lightweight static analysis for many languages. Find bug variants with patterns that look like source code.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 release, 3470 reviews, 2396 commits in 3 years 1 month
Contributions summary:Yoann appears to be primarily involved in developing and maintaining the back-end components of the `semgrep/semgrep` repository. Their contributions focus on parsing and transforming code written in various languages. The user implemented features for parsing and processing code and added specific support for new constructs like Java text blocks, C# typed metavariables, and Elixir code. The user also focused on ensuring that the codebase is well-structured and that parsing errors are handled correctly.
looklinterpythonr2cjavascript
facebookarchive/pfff
May 2013 - Jan 2017
Tools for code analysis, visualizations, or style-preserving source transformation.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 release, 68 commits, 13 PRs in 3 years 8 months
Contributions summary:Yoann's contributions primarily involve code analysis tools and source transformation utilities for the `pfff` repository. The user made changes to several core files, including `main_codegraph.ml`, `commons/common.ml`, and `main_sgrep.ml`. These edits encompass comments, merging branches, and implementing PHP matching functionalities. The user also updated the `lang_php` directory with new matching features.
transformationrefactoringvisualizationscode-analysisstatic-analysis
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