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Michael Kedar

PROFILE

Michael Kedar

Michael Kedar engineered robust backend systems for google/osv.dev, focusing on scalable vulnerability data management and high-throughput API design. He migrated core APIs and data models to Google Cloud Datastore and GCS, reimplemented the exporter in Go for improved reliability, and introduced asynchronous programming to boost query performance. His work included context-cancellable channels, structured logging, and batch data processing, addressing both latency and data integrity. Michael also enhanced CI/CD pipelines, modernized deployment with Docker and Terraform, and maintained Python and Go compatibility. These efforts resulted in more maintainable, performant, and secure infrastructure, supporting rapid vulnerability remediation and reliable ecosystem operations.

Overall Statistics

Feature vs Bugs

62%Features

Repository Contributions

161Total
Bugs
34
Commits
161
Features
55
Lines of code
200,103
Activity Months13

Work History

October 2025

22 Commits • 8 Features

Oct 1, 2025

October 2025 performance highlights for google/osv.dev and google/osv-scanner. Deliverables include API modernization with datastore migration, a Go exporter overhaul, and improved observability in Workers. Gemini configuration was introduced across repos, and a set of reliability and performance fixes, latency-focused documentation, and CI improvements enhanced overall stability and business value.

September 2025

19 Commits • 4 Features

Sep 1, 2025

September 2025 performance summary for google/osv.dev focused on delivering end-to-end data integrity, reliability, and maintainability improvements. Key work included the production data integrity checker and record pipeline, API robustness enhancements for ecosystem handling, observability improvements for vulnfeeds, and strategic dependency upgrades. The team also completed ecosystem refactorings to improve maintainability and future-proofing. Highlights: - Implemented a Go-based Production Data Integrity Checker and Record Pipeline that validates data consistency between GCS and Datastore, enables writing vulnerability data to the production GCS bucket, and included build/deploy configurations and deployment script fixes to ensure reliable production rollout. - Hardened OSV API reliability and ecosystem version handling by validating vulnerability ID lengths, disabling range-based matching for Alpine/Ubuntu to reduce false positives, normalizing repository URLs for API queries, and improving version sorting across ecosystems. - Enhanced Observability and Logging for vulnfeeds by refactoring to structured slog logs aligned with Kubernetes/GKE, and adding richer context (filenames, CVE IDs, version numbers) and improved sourceLocation for easier debugging. - Upgraded dependencies and cloud clients (osv-schema, osv library, Python compatibility, Pub/Sub v2 client) to improve compatibility, linting accuracy, and production readiness. - Consolidated ecosystem helpers and refactored to separate version comparison from enumeration, improving maintainability and reducing duplication across the codebase.

August 2025

13 Commits • 2 Features

Aug 1, 2025

Month 2025-08 for google/osv.dev delivered a set of technical and data-model enhancements that drive data freshness, reliability, and operational hygiene. Key work includes expanding the vulnerability data model with GCS-backed storage, stabilizing staging APIs and vulnfeeds tests, and performing targeted platform/schema maintenance. The work also introduced a recoverer for failed tasks to improve resiliency and reliability of background processing.

July 2025

14 Commits • 8 Features

Jul 1, 2025

July 2025 performance summary: Across osv.dev, osv-scanner, and osv-scanner-action, the team delivered substantial backend improvements, faster vulnerability processing, stronger security posture, and streamlined release readiness. Key efforts focused on scalable backends, high-throughput queries, faster history retrieval, and alignment with the latest vulnerability data and CI/CD practices. The following achievements drove measurable business value:

June 2025

6 Commits • 3 Features

Jun 1, 2025

June 2025 performance summary across google/osv-scalibr and google/osv.dev. Focused on speeding remediation, stabilizing builds, and improving data accuracy and page performance. Key outcomes include a migration of guided remediation to the scalibr library with an interactive TUI and pre-fetch optimization, Yarn.lock v2 extraction improvements (root-package exclusion and workspace support), build stability fixes, and faster vulnerability pages via batch-ID querying.

May 2025

9 Commits • 4 Features

May 1, 2025

May 2025 performance summary for google/osv.dev and google/osv-scalibr. Delivered key features to enhance vulnerability management, strengthen ecosystem tooling, and improve CI reliability, while stabilizing datastore time handling and refining dependency remediation workflows. Demonstrated strong execution across Python tooling, Pub/Sub integrations, ecosystem management, and container/CI infrastructure.

April 2025

15 Commits • 9 Features

Apr 1, 2025

April 2025 performance summary focused on strengthening remediation capabilities, expanding multi-package-manager dependency management, and reinforcing CI quality and data integrity. Delivered targeted vulnerability remediation across ecosystems (npm, Maven, PyPI), safer lockfile updates, and secure registry access, enabling faster risk reduction and more trustworthy software supply chain operations.

March 2025

23 Commits • 3 Features

Mar 1, 2025

Month: 2025-03 highlights across google/osv-scalibr, google/osv.dev, and google/oss-fuzz focusing on delivering guided remediation features, expanding CLI capabilities, and strengthening security and maintainability. Key outcomes include guided remediation enhancements with override strategy, Maven manifest handling, severity-based filtering, automated vulnerability fixing, and improved reporting; new Scalibr CLI subcommand support with tests and backward-compatible defaults; and ongoing maintenance and code-quality improvements to improve cross-platform reliability. Security posture and dependency hygiene improved across repos with Python 3.12 compatibility work on osv.dev, Gunicorn update to address a known vulnerability, and Python 3.12 compatibility adjustments in oss-fuzz.

February 2025

16 Commits • 3 Features

Feb 1, 2025

February 2025 was focused on strengthening remediation workflows and security posture while laying groundwork for OSV-Scalibr v2. Key work across osv-scalibr delivered a guided remediation framework with centralized dependency resolution and vulnerability matching, expanded dependency-graph generation through Node.js and Maven parsing and npm lockfile support, and a backend internal depfile migration to centralize dependency data. In osv.dev, we hardened security by upgrading the Go runtime to 1.23.6 and manually upgrading Python cryptography to 44.0.1 to address CVEs after automated updates stalled. These efforts reduce remediation time, improve accuracy of vulnerability graphs, and establish a scalable foundation for future releases.

January 2025

14 Commits • 8 Features

Jan 1, 2025

January 2025 performance snapshot: Delivered stability and performance improvements across google/osv.dev and google/osv-scanner, focusing on data completeness, deployment reliability, and developer experience. Key deliverables include an ESPv2 upgrade with defined resource limits, Docker/Poetry workflow refinements, data completeness fixes for NVD CVEs, resilience improvements in Debian/Ubuntu version parsing, and test stabilization. In osv-scanner, enhancements to CLI UX, Maven registry authentication, and guided remediation improvements with a performance-focused refactor and module v2 upgrade. These efforts collectively improve stability, accuracy of vulnerability data, and remediation throughput while aligning with modern dependencies and deployment practices.

December 2024

3 Commits • 2 Features

Dec 1, 2024

December 2024 performance and delivery summary across osv.dev and osv-scanner. Key outcomes include deployment structure realignment for deterministic builds and a notable performance optimization in Maven resolution, driving faster remediation and safer releases.

November 2024

6 Commits • 1 Features

Nov 1, 2024

November 2024 Highlights: Stabilizing the vulnerability scanning stack and modernizing osv.dev deployment to a cloud-native model. Delivered fixes to restore build stability, hardened dependency parsing, and completed platform migration away from App Engine with deployment cleanup and docs updates. These changes reduce build-time failures, prevent runtime panics from malformed lockfiles, and position the project for scalable, cloud-aligned deployments.

October 2024

1 Commits

Oct 1, 2024

October 2024: Focused on performance improvements in google/osv.dev by optimizing related bug queries through field projections, delivering faster retrieval and lower DB load. The fix reduces payloads by fetching only db_id fields, addressing a known bottleneck and improving overall developer experience.

Activity

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Quality Metrics

Correctness90.0%
Maintainability89.2%
Architecture86.2%
Performance80.8%
AI Usage21.4%

Skills & Technologies

Programming Languages

BashDockerfileGit configurationGoHCLHTMLJavaScriptMakefileMarkdownPython

Technical Skills

AI Tool IntegrationAPI DesignAPI DevelopmentAPI IntegrationAPI ManagementAPI Performance OptimizationAlgorithm RefactoringAsynchronous ProgrammingAuthenticationBackend DevelopmentBug FixBug FixingBuild AutomationBuild System ManagementBuild Systems

Repositories Contributed To

5 repos

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

google/osv.dev

Oct 2024 Oct 2025
13 Months active

Languages Used

PythonBashDockerfileGoHTMLJavaScriptMarkdownShell

Technical Skills

Backend DevelopmentDatabase OptimizationAPI IntegrationAPI ManagementCI/CDCloud Build

google/osv-scalibr

Feb 2025 Jun 2025
5 Months active

Languages Used

GoShellYAML

Technical Skills

Backend DevelopmentBuild SystemsCode CommentingCode OrganizationCode QualityCode Refactoring

google/osv-scanner

Nov 2024 Oct 2025
6 Months active

Languages Used

GoMakefileMarkdownTypeScriptYAML

Technical Skills

Dependency ManagementError HandlingGo DevelopmentLockfile ParsingCode RefactoringPerformance Optimization

google/osv-scanner-action

Apr 2025 Jul 2025
2 Months active

Languages Used

YAMLMarkdown

Technical Skills

CI/CDDevOpsGitHub ActionsDocker

google/oss-fuzz

Mar 2025 Mar 2025
1 Month active

Languages Used

Python

Technical Skills

Code ModernizationDependency ManagementPython Development

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