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Aaron Acosta

PROFILE

Aaron Acosta

Worked on dependency management and supply chain security features for the semgrep/semgrep and semgrep/semgrep-interfaces repositories, focusing on robust lockfile parsing and improved error handling. Delivered support for Cocoapods lockfile and manifest parsing using OCaml, Python, and TypeScript, expanding ecosystem coverage and maintaining backward compatibility. Enhanced the Gradle lockfile parser to handle non-standard headers and improved npm v3 lockfile analysis by correctly including dev dependencies, increasing the accuracy of software composition analysis. Implemented explicit checks for empty lockfiles, providing clear error messages and reducing troubleshooting time. Emphasized maintainable parsing logic, schema definition, and reliable dependency analysis throughout the work.

Overall Statistics

Feature vs Bugs

25%Features

Repository Contributions

4Total
Bugs
3
Commits
4
Features
1
Lines of code
1,470
Activity Months4

Work History

June 2025

1 Commits

Jun 1, 2025

June 2025 monthly summary for semgrep/semgrep: Focused on strengthening dependency analysis for npm v3 lockfiles by correcting dev-dependency handling in the lockfile parser. This change improves accuracy of transitive dependency graphs and vulnerability/quality checks.

January 2025

1 Commits

Jan 1, 2025

January 2025 – semgrep/semgrep: Key feature/bug fix delivered: Empty lockfile handling improvement. Implemented an explicit check for empty dependency content and surfaced a friendly error message, replacing cryptic failures and improving developer experience. This was implemented in commit 1d792aad9896a96927b1aac791d7fb73ba3242f9 (semgrep/semgrep-proprietary#2753). Impact: reduces troubleshooting time, lowers support burden, and increases reliability of dependency resolution. Technologies/skills demonstrated: robust input validation, user-centric error messaging, and maintainable parsing logic.

December 2024

1 Commits • 1 Features

Dec 1, 2024

For 2024-12, delivered Cocoapods Dependency Management Support (Lockfile and Manifest Parsing) in semgrep-interfaces. Added new Cocoapods lockfile types and parsers, expanded dependency management coverage, and ensured backward compatibility with older CLI versions. Lays groundwork for broader ecosystem lockfile support to improve security and quality checks for Cocoapods projects.

November 2024

1 Commits

Nov 1, 2024

Month: 2024-11 summary focused on key accomplishments, top achievements, and impact for semgrep/semgrep. This period prioritized reliability improvements in the Gradle lockfile parser to enhance supply chain scanning stability and reduce failures caused by non-standard lockfile headers. The change reduces operational risk in dependency scanning and strengthens overall product reliability across the repository.

Activity

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Quality Metrics

Correctness97.6%
Maintainability90.0%
Architecture85.0%
Performance95.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

JSONJavaOCamlPythonTypeScriptYAML

Technical Skills

CLI DevelopmentDependency AnalysisDependency ManagementError HandlingJSON SchemaNPMOCaml DevelopmentParsingProtocol BuffersPython DevelopmentSchema DefinitionSoftware Composition Analysis (SCA)Supply Chain SecurityTestingTypeScript Development

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

semgrep/semgrep

Nov 2024 Jun 2025
3 Months active

Languages Used

JavaPythonYAMLJSON

Technical Skills

ParsingPython DevelopmentSupply Chain SecurityTestingCLI DevelopmentDependency Management

semgrep/semgrep-interfaces

Dec 2024 Dec 2024
1 Month active

Languages Used

OCamlPythonTypeScript

Technical Skills

Dependency ManagementJSON SchemaOCaml DevelopmentProtocol BuffersPython DevelopmentSchema Definition