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Carlo Piovesan

PROFILE

Carlo Piovesan

Carlo Piovesan developed and maintained core infrastructure and extension tooling for the DuckDB ecosystem, focusing on repositories such as duckdb-httpfs, duckdb-web, and duckdb/community-extensions. He engineered robust backend systems in C++ and CMake, delivering secure HTTPFS file transfer with TLS, modular WebAssembly builds, and cross-platform extension support. Carlo improved CI/CD pipelines using GitHub Actions, optimizing build automation, cache persistence, and deployment workflows to ensure reliable releases. His work included API integration, documentation automation, and dependency management, resulting in maintainable, scalable systems. Through careful refactoring and configuration management, he enhanced developer onboarding, platform compatibility, and the overall reliability of DuckDB’s extension ecosystem.

Overall Statistics

Feature vs Bugs

76%Features

Repository Contributions

162Total
Bugs
20
Commits
162
Features
64
Lines of code
4,918
Activity Months12

Work History

October 2025

1 Commits

Oct 1, 2025

Concise October 2025 monthly summary for duckdb/community-extensions. Focused on ensuring upstream alignment and reliability of the Arrow extension reference.

September 2025

24 Commits • 10 Features

Sep 1, 2025

September 2025 performance summary: Delivered robust HTTPFS capabilities, improved cross-platform compatibility, and strengthened CI/CD and extension standards, delivering strong business value through reliability, observability, and maintainability improvements across duckdb-httpfs, duckdb-web, and community-extensions.

August 2025

7 Commits • 2 Features

Aug 1, 2025

Concise monthly summary for 2025-08 focusing on key features delivered, major bugs fixed, overall impact, and technologies demonstrated across the duckdb-web and duckdb-httpfs repositories. Highlights improved documentation accuracy for build constraints, web/EMSCRIPTEN build reliability, HTTP header correctness, and test/code quality.

July 2025

16 Commits • 5 Features

Jul 1, 2025

July 2025 summary focusing on delivering robust HTTPFS capabilities, WASM build integration, and CI/CD alignment across DuckDB repositories. Delivered configurable HTTPFS client selection, strengthened HTTPFS robustness and modularization for WebAssembly builds, and updated CI pipelines and documentation to reflect newer DuckDB versions and Wasm targets. Published comprehensive DuckDB Wasm deployment documentation and standardized the DuckDB version in CI/CD to ensure consistent tooling and faster, safer releases.

June 2025

5 Commits • 3 Features

Jun 1, 2025

June 2025 performance summary: Across the duckdb/community-extensions and duckdb-httpfs repositories, delivered targeted CI/CD, security, and deployment improvements that drive faster pipelines, more robust builds, and secure data transfers. Implemented cache persistence optimization and version alignment in CI/CD for the quack extension, introduced TLS support in HTTPFS by bundling mbedtls, fixed a HTTPFileHandle error path by formatting HTTP status codes as integers, and refined the distribution pipeline to exclude Wasm targets from main publishing. These changes reduce unnecessary work in CI, enable secure file transfers, and improve deployment correctness and maintainability.

May 2025

14 Commits • 5 Features

May 1, 2025

May 2025 performance and reliability enhancements across duckdb-web, duckdb-httpfs, and community-extensions. Delivered clear documentation updates for packaging changes and a new DuckLake data path, stabilized extension handling to prevent accidental overwrites, hardened HTTPFS as a loadable extension with centralized HTTP parameter handling and expanded tests, upgraded to DuckDB v1.3.x in HTTPFS CI, and enabled Windows build support for the H3 extension. These efforts reduce user friction, improve platform coverage, and strengthen CI reliability for smoother adoption and maintenance.

April 2025

13 Commits • 4 Features

Apr 1, 2025

April 2025: Strengthened cross-repo reliability and automation across duckdb-aws, duckdb-web, and duckdb/community-extensions. Delivered build tooling improvements, CI/CD stability, and data-quality enhancements that reduce onboarding time, minimize build and deployment failures, and deliver more trustworthy usage metrics.

March 2025

9 Commits • 8 Features

Mar 1, 2025

March 2025 delivered targeted feature updates, stability improvements, and documentation refinements across duckdb-web and community-extensions. The month focused on release alignment, cross-platform WASM enablement, and preserving compatibility through careful revert of a null-value change. Business value included clearer release data, expanded WASM support for key extensions, and streamlined CI/CD pipelines to stay aligned with the latest stable DuckDB release.

February 2025

9 Commits • 2 Features

Feb 1, 2025

February 2025: Key features delivered include targeted documentation navigation improvements for the Working with Extensions area and alignment of extension dependencies, along with stability-focused build tweaks and documentation schema alignment. This work enhances developer productivity, reduces onboarding time, and lowers CI risk across the duckdb-web and community-extensions repos.

January 2025

15 Commits • 6 Features

Jan 1, 2025

January 2025 performance summary: Focused CI/CD improvements and documentation enhancements across duckdb/community-extensions and duckdb/duckdb-web, delivering tangible business value through more reliable deployments, faster integration with the latest core, and clearer extension security and release guidance. Key outcomes include improved docs deployment reliability, CI compatibility with latest core changes, stable extension pinning, and streamlined platform-target handling, complemented by comprehensive documentation improvements for security and release processes.

December 2024

10 Commits • 5 Features

Dec 1, 2024

December 2024 monthly summary focused on delivering core reliability and business value across duckdb-httpfs, duckdb-web, and community-extensions. Highlights include improvements to HTTPFS download robustness, CI/CD determinism, and Avro support in extensions, plus workflow enhancements improving PR handling and social previews.

November 2024

39 Commits • 14 Features

Nov 1, 2024

November 2024 focused on expanding the DuckDB ecosystem and improving maintainability through automation, CI resiliency, and cross‑platform tooling. Delivered new community extensions, refreshed metadata to ensure accurate extension catalogs, automated documentation workflows, and strengthened the CI/CD pipeline with build_all workflows and artifact upgrades. Also advanced Wasm tooling and security enhancements (token-based authentication and file upload capabilities) to support secure, scalable distribution of extensions and faster onboarding of contributors.

Activity

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Quality Metrics

Correctness90.6%
Maintainability92.4%
Architecture89.0%
Performance87.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

C++CMakeCSSCSVMakefileMarkdownPythonSQLShellText

Technical Skills

API IntegrationAPI RefactoringAWS S3Backend DevelopmentBuild AutomationBuild ConfigurationBuild SystemBuild System ConfigurationBuild SystemsBuild Systems (CMake)C++C++ DevelopmentCI/CDCMakeCSS

Repositories Contributed To

4 repos

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

duckdb/community-extensions

Nov 2024 Oct 2025
11 Months active

Languages Used

MarkdownPythonSQLShellYAMLCSVymlyaml

Technical Skills

API IntegrationAWS S3Build AutomationBuild ConfigurationBuild System ConfigurationCI/CD

duckdb/duckdb-httpfs

Nov 2024 Sep 2025
7 Months active

Languages Used

C++YAMLSQLcmakeCMakeMarkdownMakefile

Technical Skills

C++Cloud Storage IntegrationFile System IntegrationCI/CDCachingError Handling

duckdb/duckdb-web

Nov 2024 Sep 2025
10 Months active

Languages Used

CSSMarkdownShellYAMLCSVSQLText

Technical Skills

CI/CDCSSDocumentationDocumentation AutomationDocumentation ManagementExtension Development

duckdb/duckdb-aws

Apr 2025 Apr 2025
1 Month active

Languages Used

CMakeYAMLcmake

Technical Skills

Build System ConfigurationBuild SystemsCI/CDCMakeGitHub ActionsPackage Management

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