
Marcin Stachniuk engineered advanced static analysis and CI/CD automation features across SonarSource’s sonar-go and sonar-php repositories, focusing on code quality, security, and developer productivity. He implemented robust AST parsing and manipulation in Go and Java, enabling precise code analysis, batch processing, and improved module resolution for large-scale Go projects. Marcin modernized build pipelines using Gradle and GitHub Actions, streamlined dependency management, and enhanced error handling for coverage imports and multi-module support. His work on language enhancements, such as typed variables and syntax parsing in Azure/bicep, demonstrated deep expertise in compiler design and language tooling, resulting in maintainable, scalable solutions.
March 2026: Delivered significant Bicep language improvements and developer experience enhancements through targeted language features and syntax refinements. Focused on user-facing capabilities that reduce template authoring errors and simplify maintenance across deployments.
March 2026: Delivered significant Bicep language improvements and developer experience enhancements through targeted language features and syntax refinements. Focused on user-facing capabilities that reduce template authoring errors and simplify maintenance across deployments.
February 2026: Implemented Code Coverage Telemetry Tracking for file resolution during code coverage import in SonarSource/sonar-go. This instrumentation, triggered by commit 0333bd88914001580a335b84140f44eca02af845 (SONARGO-741), provides visibility into how coverage reports are processed, enabling faster troubleshooting and data-driven improvements. Result: improved observability, more actionable coverage data, and alignment with our telemetry standards. No major bugs fixed this month.
February 2026: Implemented Code Coverage Telemetry Tracking for file resolution during code coverage import in SonarSource/sonar-go. This instrumentation, triggered by commit 0333bd88914001580a335b84140f44eca02af845 (SONARGO-741), provides visibility into how coverage reports are processed, enabling faster troubleshooting and data-driven improvements. Result: improved observability, more actionable coverage data, and alignment with our telemetry standards. No major bugs fixed this month.
January 2026: Delivered Go Coverage Report Import Enhancements for SonarGo (SonarSource/sonar-go), enabling multi-module Go coverage import and improved file path resolution in coverage reports. Implemented fixes associated with SONARGO-740 to improve reliability of Go coverage imports across multi-module projects. This work increases coverage data accuracy, reduces manual adjustments, and strengthens SonarQube's coverage analytics for Go projects.
January 2026: Delivered Go Coverage Report Import Enhancements for SonarGo (SonarSource/sonar-go), enabling multi-module Go coverage import and improved file path resolution in coverage reports. Implemented fixes associated with SONARGO-740 to improve reliability of Go coverage imports across multi-module projects. This work increases coverage data accuracy, reduces manual adjustments, and strengthens SonarQube's coverage analytics for Go projects.
December 2025 monthly summary for SonarGo (repo SonarSource/sonar-go). Delivered two key features focused on security hardening and mono-repo Go coverage support, with measurable improvements to security checks and coverage analytics across mono-repositories. Activities emphasized code quality, reliability, and maintainability, with clear traceability to Jira issues SONARGO-727 and SONARGO-13 and their associated commits.
December 2025 monthly summary for SonarGo (repo SonarSource/sonar-go). Delivered two key features focused on security hardening and mono-repo Go coverage support, with measurable improvements to security checks and coverage analytics across mono-repositories. Activities emphasized code quality, reliability, and maintainability, with clear traceability to Jira issues SONARGO-727 and SONARGO-13 and their associated commits.
November 2025 performance summary for SonarSource/sonar-go focusing on business value and technical achievements. This month centered on optimizing the build pipeline and stabilizing large-scale data imports to improve reliability and throughput across scheduled events.
November 2025 performance summary for SonarSource/sonar-go focusing on business value and technical achievements. This month centered on optimizing the build pipeline and stabilizing large-scale data imports to improve reliability and throughput across scheduled events.
October 2025 monthly performance summary highlighting CI/CD modernization, quality improvements, and documentation polish across SonarGo and SonarPHP. Delivered business-focused features, fixed critical analyzer behavior, and improved build reliability to accelerate feedback loops for developers and the CI pipeline owners.
October 2025 monthly performance summary highlighting CI/CD modernization, quality improvements, and documentation polish across SonarGo and SonarPHP. Delivered business-focused features, fixed critical analyzer behavior, and improved build reliability to accelerate feedback loops for developers and the CI pipeline owners.
September 2025 performance highlights focused on delivering reliable release pipelines, stronger code quality, and broader language support across two core SonarSource repositories. Key initiatives include migrating PHP CI/CD to GitHub Actions with enhanced releasability checks and notifications, cleaning up critical parser components with targeted tests, upgrading Go tooling to enable Go 1.25.1 features, and strengthening CI linting and Go analyzer robustness. The integration removals aimed at reducing maintenance risk were completed as part of the pipeline simplifications.
September 2025 performance highlights focused on delivering reliable release pipelines, stronger code quality, and broader language support across two core SonarSource repositories. Key initiatives include migrating PHP CI/CD to GitHub Actions with enhanced releasability checks and notifications, cleaning up critical parser components with targeted tests, upgrading Go tooling to enable Go 1.25.1 features, and strengthening CI linting and Go analyzer robustness. The integration removals aimed at reducing maintenance risk were completed as part of the pipeline simplifications.
August 2025 — SonarGo: Targeted bug fix to improve Go method call identification in complex chains. Delivered improved matching by considering the preceding identifier in a chain, enhancing the accuracy of Go static analysis. No user-facing features released this month; all work focused on stability and analysis quality improvements. Business value: more reliable Go code metrics and reduced misclassifications in method invocations. Key commit: aac51c08d2972af01c7659898603625e4b73efec (SONARGO-470).
August 2025 — SonarGo: Targeted bug fix to improve Go method call identification in complex chains. Delivered improved matching by considering the preceding identifier in a chain, enhancing the accuracy of Go static analysis. No user-facing features released this month; all work focused on stability and analysis quality improvements. Business value: more reliable Go code metrics and reduced misclassifications in method invocations. Key commit: aac51c08d2972af01c7659898603625e4b73efec (SONARGO-470).
2025-07 Monthly Summary for SonarGo development: This month focused on stabilizing CI workflows, advancing multi-module Go analysis, and refining export logic to handle multiple packages within a single directory. Delivered concrete improvements that reduce CI failures, improve parsing accuracy for module-aware Go projects, and enhance export coverage and data paths. The work lays groundwork for scaling Go project analysis in multi-module repositories and simplifies downstream reporting and packaging tasks.
2025-07 Monthly Summary for SonarGo development: This month focused on stabilizing CI workflows, advancing multi-module Go analysis, and refining export logic to handle multiple packages within a single directory. Delivered concrete improvements that reduce CI failures, improve parsing accuracy for module-aware Go projects, and enhance export coverage and data paths. The work lays groundwork for scaling Go project analysis in multi-module repositories and simplifies downstream reporting and packaging tasks.
June 2025 monthly summary for SonarSource/sonar-go: delivered major features enabling batch processing of Go files, enhanced error handling for AST generation, improved module resolution by incorporating module name into package resolution, and test suite maintenance by removing obsolete ArchUnitTest.java; all drive performance, reliability, and developer productivity.
June 2025 monthly summary for SonarSource/sonar-go: delivered major features enabling batch processing of Go files, enhanced error handling for AST generation, improved module resolution by incorporating module name into package resolution, and test suite maintenance by removing obsolete ArchUnitTest.java; all drive performance, reliability, and developer productivity.
May 2025 Monthly Summary for SonarGo development. Focused on delivering features that enhance code analysis accuracy for Go and Java, improving data export capabilities, and hardening CI reliability. Key accomplishments include implementing return type capture in FunctionInvocationTree, enabling gcexportdata export for Go packages, and stabilizing the CI and code quality workflow.
May 2025 Monthly Summary for SonarGo development. Focused on delivering features that enhance code analysis accuracy for Go and Java, improving data export capabilities, and hardening CI reliability. Key accomplishments include implementing return type capture in FunctionInvocationTree, enabling gcexportdata export for Go packages, and stabilizing the CI and code quality workflow.
April 2025 — SonarSource/sonar-go: Delivered core frontend enhancements, CI/CD stabilization, and configuration optimizations that together improve analysis fidelity, reduce build times, and streamline scans for enterprise use.
April 2025 — SonarSource/sonar-go: Delivered core frontend enhancements, CI/CD stabilization, and configuration optimizations that together improve analysis fidelity, reduce build times, and streamline scans for enterprise use.
March 2025 delivered meaningful business value across SonarGo and SonarPHP through licensing automation, analyzer quality improvements, and CI efficiency gains. Notable work includes enabling SQS licensing for Go with a provisioning and rollback path, substantial Go analyzer frontend/parser enhancements with robust type handling and numeric literal parsing, and CI/build optimizations that reduced pipeline times and increased stability. PHP efforts focused on CI reliability and build-system modernization via cloud-native Gradle, plus SCA considerations to reduce false positives, contributing to faster, more reliable scans and easier maintainability.
March 2025 delivered meaningful business value across SonarGo and SonarPHP through licensing automation, analyzer quality improvements, and CI efficiency gains. Notable work includes enabling SQS licensing for Go with a provisioning and rollback path, substantial Go analyzer frontend/parser enhancements with robust type handling and numeric literal parsing, and CI/build optimizations that reduced pipeline times and increased stability. PHP efforts focused on CI reliability and build-system modernization via cloud-native Gradle, plus SCA considerations to reduce false positives, contributing to faster, more reliable scans and easier maintainability.
February 2025 monthly summary for SonarGo: - Focused enhancements to the Go frontend to improve analysis accuracy, performance, and build reliability. Delivered key features with concrete commits, enabling more precise rule application and faster CI cycles.
February 2025 monthly summary for SonarGo: - Focused enhancements to the Go frontend to improve analysis accuracy, performance, and build reliability. Delivered key features with concrete commits, enabling more precise rule application and faster CI cycles.
January 2025 monthly summary for SonarGo and SonarPHP contributions. Key features delivered include Mend-based Go dependency scanning integrated into the Go analysis pipeline, enabling Go module dependency resolution and expanded vulnerability detection. Go analysis framework modularization with language-specific checks and a new sonar-go-commons module to improve maintainability and extensibility. Beego Go analysis enhancement: added identification of method receivers to improve parsing accuracy. Checkstyle report parsing via a generalized XML parser, introducing CheckstyleFormatImporter to handle external linter reports in Checkstyle XML format. Build and maintenance improvements: Gradle parallel task execution, cleanup of unused code, and dependency tuning to speed up builds and reduce CI time. PHP CI notification channel updated to security-focused alerts.
January 2025 monthly summary for SonarGo and SonarPHP contributions. Key features delivered include Mend-based Go dependency scanning integrated into the Go analysis pipeline, enabling Go module dependency resolution and expanded vulnerability detection. Go analysis framework modularization with language-specific checks and a new sonar-go-commons module to improve maintainability and extensibility. Beego Go analysis enhancement: added identification of method receivers to improve parsing accuracy. Checkstyle report parsing via a generalized XML parser, introducing CheckstyleFormatImporter to handle external linter reports in Checkstyle XML format. Build and maintenance improvements: Gradle parallel task execution, cleanup of unused code, and dependency tuning to speed up builds and reduce CI time. PHP CI notification channel updated to security-focused alerts.
December 2024 (2024-12) monthly highlights for SonarGo: delivered several high-impact features and reliability improvements with clear business value, modernized testing and CI/CD practices, and demonstrated strong cross-cutting technical skills.
December 2024 (2024-12) monthly highlights for SonarGo: delivered several high-impact features and reliability improvements with clear business value, modernized testing and CI/CD practices, and demonstrated strong cross-cutting technical skills.
Month: 2024-11 — This period delivered targeted security and infrastructure improvements across PHP and Go repositories, emphasizing business value and maintainability. Key features were delivered in sonar-php (security-focused static analysis) and governance/infra updates, with governance enhancements in sonar-go. No major bug fixes were reported this month; the focus was on feature delivery, dependency cleanups, and process improvements that reduce risk and improve code reviews.
Month: 2024-11 — This period delivered targeted security and infrastructure improvements across PHP and Go repositories, emphasizing business value and maintainability. Key features were delivered in sonar-php (security-focused static analysis) and governance/infra updates, with governance enhancements in sonar-go. No major bug fixes were reported this month; the focus was on feature delivery, dependency cleanups, and process improvements that reduce risk and improve code reviews.

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