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Marcin Stachniuk

PROFILE

Marcin Stachniuk

Over 21 months, this developer advanced static analysis and CI/CD automation across SonarSource repositories, notably sonar-go and sonar-php. They engineered features such as Go module-aware code analysis, batch processing for Go files, and robust error handling, leveraging Java, Go, and Gradle. Their work included refactoring AST parsing logic, enhancing code coverage import for multi-module projects, and modernizing build pipelines with GitHub Actions. By integrating security checks, optimizing performance, and improving test reliability, they enabled safer, faster development cycles. Contributions also extended to language design in Azure/bicep, demonstrating expertise in compiler theory, plugin development, and cross-language static analysis.

Overall Statistics

Feature vs Bugs

79%Features

Repository Contributions

126Total
Bugs
14
Commits
126
Features
54
Lines of code
42,450
Activity Months21

Work History

July 2026

4 Commits • 2 Features

Jul 1, 2026

Month: 2026-07 focused on delivering key features, fixing critical bugs, and strengthening code quality across Kotlin, Java, and Go components. Highlights include modernization of the Surefire parser in SonarKotlin leveraging pattern matching and the Stream.toList() collector, a centralized approach to credential detection exclusions and placeholder filtering in SonarJS, and a cognitive complexity alignment in Sonar-Go to ignore idiomatic error guard clauses with added unit tests. These efforts reduce false positives, improve maintainability, and provide more accurate metrics for business decisions. Technologies involved include Java pattern matching, Kotlin-Java interoperability, centralized utilities, and Go unit testing; cross-team collaboration contributed to faster delivery and better test coverage.

June 2026

5 Commits • 3 Features

Jun 1, 2026

June 2026 monthly summary for SonarGo (repository: SonarSource/sonar-go). Focused on establishing a solid foundation for long-term maintainability, performance improvements for large-repo parsing, and alignment with Go toolchains and mapping data.

May 2026

4 Commits • 3 Features

May 1, 2026

May 2026 - SonarGo monthly summary highlighting delivery of Go static analysis enhancements, codebase refactor and test hardening, and dependency upgrades with binary regeneration. The work delivers cleaner analysis results, faster scans, and a more robust, maintainable codebase that supports safer Go projects.

April 2026

2 Commits • 2 Features

Apr 1, 2026

April 2026 (2026-04) monthly summary for SonarGo: Delivered two major features and implemented a bug fix to telemetry for multi-module Go projects. Key enhancements improved rule documentation and formatting (Go Language Rules RSPEC) and added a Telemetry Sensor to aggregate coverage statistics and Go version data across modules. A telemetry transmission bug affecting multi-module reporting was fixed to ensure accurate telemetry across the repository. The changes provide clearer rule documentation, improved maintainability, and higher confidence in cross-module telemetry analytics, enabling better quality decisions and quicker issue detection.

March 2026

1 Commits • 1 Features

Mar 1, 2026

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

1 Commits • 1 Features

Feb 1, 2026

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

1 Commits • 1 Features

Jan 1, 2026

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

2 Commits • 2 Features

Dec 1, 2025

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

2 Commits • 1 Features

Nov 1, 2025

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

6 Commits • 3 Features

Oct 1, 2025

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

16 Commits • 4 Features

Sep 1, 2025

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

1 Commits

Aug 1, 2025

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).

July 2025

5 Commits • 2 Features

Jul 1, 2025

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

5 Commits • 3 Features

Jun 1, 2025

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

7 Commits • 2 Features

May 1, 2025

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

11 Commits • 4 Features

Apr 1, 2025

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

20 Commits • 5 Features

Mar 1, 2025

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

5 Commits • 3 Features

Feb 1, 2025

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

16 Commits • 6 Features

Jan 1, 2025

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

7 Commits • 3 Features

Dec 1, 2024

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.

November 2024

5 Commits • 3 Features

Nov 1, 2024

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.

Activity

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Quality Metrics

Correctness92.2%
Maintainability91.6%
Architecture89.6%
Performance83.8%
AI Usage24.2%

Skills & Technologies

Programming Languages

BashBicepConfigurationDockerfileGOGitGoGradleGroovyJava

Technical Skills

AST ManipulationAST ParsingAST manipulationAbstract Syntax Tree (AST)AutomationBackend DevelopmentBatch ProcessingBug FixingBuild AutomationBuild ConfigurationBuild Script DevelopmentBuild System ConfigurationBuild SystemsBuild Tool ConfigurationCI/CD

Repositories Contributed To

5 repos

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

SonarSource/sonar-go

Nov 2024 Jul 2026
20 Months active

Languages Used

GradleJavaKotlinMarkdownYAMLConfigurationGitGo

Technical Skills

DevOpsRepository ManagementAutomationBuild AutomationCI/CDDependency Management

SonarSource/sonar-php

Nov 2024 Oct 2025
5 Months active

Languages Used

GradleJavaKotlinMarkdownPHPTOMLYAMLShell

Technical Skills

AST ParsingBuild ConfigurationBuild System ConfigurationCode SecurityDependency ManagementJava

Azure/bicep

Mar 2026 Mar 2026
1 Month active

Languages Used

BicepMarkdown

Technical Skills

compiler designlanguage designsyntax parsing

SonarSource/sonar-kotlin

Jul 2026 Jul 2026
1 Month active

Languages Used

No languages

Technical Skills

JavaModern Java FeaturesRefactoring

SonarSource/SonarJS

Jul 2026 Jul 2026
1 Month active

Languages Used

No languages

Technical Skills

AST ManipulationJavaScriptRegexStatic AnalysisTypeScript