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Stefan Jandl

PROFILE

Stefan Jandl

Reg developed and maintained core features for the getsentry/sentry-unity repository, focusing on cross-platform error reporting, distributed tracing, and developer onboarding. He engineered robust SDK integrations for Unity, enabling seamless crash capture and telemetry across Windows, Android, iOS, Xbox, and PlayStation. Using C#, C++, and CI/CD automation, Reg refactored native plugin architecture, improved build reliability, and introduced event throttling and metrics onboarding. His work included enhancing structured logging, refining context modeling, and expanding automated testing. By modernizing build pipelines and documentation, Reg reduced onboarding friction and improved observability, delivering maintainable solutions that accelerated debugging and supported complex Unity deployments.

Overall Statistics

Feature vs Bugs

66%Features

Repository Contributions

284Total
Bugs
58
Commits
284
Features
113
Lines of code
48,586
Activity Months19

Work History

April 2026

1 Commits • 1 Features

Apr 1, 2026

April 2026 monthly summary for getsentry/sentry: Delivered Unity Metrics Onboarding Integration, enabling Unity apps to send and verify metrics during onboarding; updated onboarding docs; introduced new metrics components. No major bugs fixed this month. Overall impact: reduces onboarding friction for Unity developers, expands telemetry coverage, and accelerates time-to-value. Technologies/skills demonstrated: instrumentation design, onboarding workflow enhancements, component development, and documentation.

March 2026

1 Commits • 1 Features

Mar 1, 2026

March 2026 monthly summary for getsentry/sentry-native: Delivered a new Attachment Management capability in the NativeScope API to enhance attachment handling and user experience via JNI. Implemented addAttachment, addAttachmentBytes, and clearAttachments, enabling robust attachment management from Java through the native scope. This work improves event data richness and end-user experience for mobile integrations and lays the groundwork for more consistent cross-language behavior.

February 2026

33 Commits • 17 Features

Feb 1, 2026

February 2026 was a period of increased CI readiness, reliability improvements, and observability enhancements across getsentry/sentry-unity, getsentry/sentry-dotnet, and getsentry/sentry-docs. The team delivered cross‑platform Unity testing readiness, introduced event throttling, stabilized test suites, and advanced release/telemetry tooling—driving faster feedback, broader platform support, and clearer customer telemetry.

January 2026

18 Commits • 7 Features

Jan 1, 2026

January 2026 performance highlights across getsentry's .NET, Unity, docs, and Java repositories. Delivered core threading and tracing improvements, strengthened cross-platform native integration, and enhanced debugging capabilities, driving reliability and developer productivity across major platforms. Key features and improvements implemented: - Sentry.NET: Added Main flag to SentryThread to improve UI-thread identification and thread management. Commit c8dd6565. - Sentry.NET: Enhanced HTTP 413 handling for oversized envelopes with targeted logging and discard reasons. Commit 866b314d. - Sentry Docs (Unity): Added is_main_thread to Unity event context data and published a 4.0.0 migration guide for the Unity SDK. Commits 236aaf69 and 5c722e04. - Sentry Unity: Refactored native integration architecture for cross-platform support (Android, Nintendo Switch) and corrected native SDK naming. Commits 00e916b3, 9d1fe6da, ead33022. - Sentry Unity: Tracing reliability improvements including persistent span.origin across scenes and config-gated SceneManager tracing to prevent incorrect tracing. Commits 6f594b20, dc60a400, 4ca4f44c. Major bugs fixed and reliability gains: - Improved HTTP 413 handling to prevent cascading failures and improve user feedback. - Stabilized tracing lifecycle in Unity by ensuring trace IDs survive scene changes and trace origin is consistently set. - Refined symbol upload and developer tooling to reduce noise and improve debugging accuracy. Overall impact and accomplishments: - Enhanced cross-platform maintainability and build reliability through native architecture refactor and cross-platform support. - Improved developer experience and onboarding with migration guides, better context modeling, and clearer instrumentation for Unity users. - Strengthened end-to-end tracing and error handling, reducing debugging time and improving incident response. Technologies and skills demonstrated: - Languages/SDKs: C#/.NET, Unity/C#, Android, Nintendo Switch tooling; tracing (span IDs, origin), debug symbol management. - Practices: Cross-platform architecture, context modeling, feature-driven development, migration/documentation initiatives, test environment improvements. - Collaboration: Coordinated across dotnet, unity, and docs teams; multiple commits contributing to a cohesive release.

December 2025

17 Commits • 6 Features

Dec 1, 2025

December 2025 monthly summary: Delivered major cross-platform and observability improvements across Unity and core Sentry products, driving faster releases, richer telemetry, and broader platform support for game developers. Key outcomes include cross-platform PlayStation/console native support with build optimizations, enhanced diagnostics/structured logging, safer Mono/CLI handling for IL2CPP, and stabilized release workflows with improved documentation. In parallel, Unity and Unreal logging integration was unified through documented structured logging, and core context tagging was expanded with Unity-specific context (is_main_thread) and device_type mappings. This work strengthens customer value by reducing release friction, improving incident context and troubleshooting efficiency, and enabling richer telemetry across major game engines.

November 2025

30 Commits • 14 Features

Nov 1, 2025

November 2025 performance highlights span across Unity-centric and .NET Sentry projects, focusing on stronger context/state visibility, stable data capture pipelines, and cross‑platform reliability. The month delivered concrete improvements in memory diagnostics, scene-aware telemetry, and configurable capture flows, while elevating observability and maintainability through logging discipline and testing enhancements. Business value was realized through earlier memory/performance insights, fewer false positives, and smoother on-boarding for new platforms and SDKs.

October 2025

5 Commits • 2 Features

Oct 1, 2025

October 2025 monthly performance summary for core tracking across getsentry/sentry-unity and getsentry/sentry-docs. The month focused on developer experience, build reliability, cross-platform debugging, and clear tracing guidance to accelerate issue diagnosis and delivery parity across platforms. Key features delivered: - Sentry Unity: Developer Onboarding and Build Pipeline Improvements — updated setup docs to clearly specify Unity and .NET prerequisites, streamlined downloads of native SDKs, clarified Windows build steps, and modernized the CI/CD workflow to reduce build complexity. Commits: 5ac9e44b7382b1e80c9ffcdc0d5c79c9ebd592cb; 455c8b19dc537adaa60da794bc5be6bb2146768b - Sentry Docs: Unity Tracing and Debugging Documentation — added guidance on custom trace propagation in Unity apps with code examples for distributed tracing (HttpClient and UnityWebRequest) and troubleshooting guidance for interpreting compiler-generated stack traces (e.g., <>n__0, <>c, <>c__DisplayClass). Commits: 6d53857616c15f49a19efde702ce1e7c52ddc76a; 27082d045b77526153c9352f02e0f0b3a339ea94 - Xbox Build Debug Symbols Upload Fix — corrected Xbox build upload path so debug symbols are correctly identified and uploaded from Assets/Plugins/Sentry, ensuring accurate debugging information for Xbox builds. Commit: 3cc63bfa3a87fb173b24d865cadd72fa8bddc8c5 Major bugs fixed: - Xbox build: Fixed the debug symbols upload path to ensure accurate debugging information for Xbox builds. Commit: 3cc63bfa3a87fb173b24d865cadd72fa8bddc8c5 Overall impact and accomplishments: - Significantly improved developer onboarding, build reliability, and cross-platform debugging readiness for Unity projects, enabling faster delivery cycles and fewer build-time disruptions. - Delivered clear Unity tracing and debugging guidance to accelerate root-cause analysis and reduce MTTR for distributed tracing issues. Technologies/skills demonstrated: - Unity and .NET prerequisites, Windows build workflows, CI/CD modernization - Xbox build pipelines and native SDK management - Distributed tracing concepts in Unity (trace propagation), HttpClient/UnityWebRequest integration, and debugging stack trace interpretation

September 2025

21 Commits • 9 Features

Sep 1, 2025

September 2025: Delivered major CI/CD improvements, platform modernization, and SDK maintenance across getsentry/sentry-unity and getsentry/sentry-docs. Key outcomes include more reliable builds, Unity 2021+ minimum support, expanded Input System handling, Xbox native crash reporting, and consolidated SDK configuration, translating to faster delivery, better telemetry, and reduced maintenance. Documentation updates for Unity performance metrics, ANR detection, and guidance on custom measurements were published to help users adopt best practices.

August 2025

22 Commits • 7 Features

Aug 1, 2025

August 2025 performance summary for multi-repo Unity, Docs, and .NET efforts. Focused on stabilizing the Unity build and CI/CD pipelines, accelerating iOS builds, expanding developer tooling and samples, and tightening Cocoa SDK version management and core initialization/debug capabilities. Contributions spanned getsentry/sentry-unity, getsentry/sentry-docs, and getsentry/sentry-dotnet, driving business value through more reliable builds, faster delivery, and improved developer experience across platforms.

July 2025

14 Commits • 6 Features

Jul 1, 2025

July 2025: Delivered a cohesive set of Unity-focused features, stability improvements, and developer-facing docs across the Sentry ecosystem. The work prioritized user feedback reliability, initialization stability, platform reach, and build/Docs quality, enabling faster onboarding, safer runtime experiences, and broader adoption.

June 2025

3 Commits • 1 Features

Jun 1, 2025

June 2025: Focused on stability and maintainability enhancements for getsentry/sentry-unity. Delivered targeted crash fixes, safer JNI handling, and template modernization to streamline issue triage and future contributions.

May 2025

16 Commits • 7 Features

May 1, 2025

May 2025: Delivered cross-repo improvements across .NET and Unity ecosystems to strengthen observability, build reliability, and developer experience. Key outcomes include enhanced transaction scope observation and trace propagation, flexible CLI usage with Organization Token detection (removing mandatory org slug), resilient iOS builds via conditional logging and error handling, and Unity build optimizations with version-aware code stripping. Additional cross-platform CI enhancements and a .NET SDK upgrade improved build stability and compatibility, while documentation updates supported Unity SDK adoption. These efforts reduce toil, lower customer-facing risk, and improve performance and diagnostics for complex deployments.

April 2025

26 Commits • 10 Features

Apr 1, 2025

April 2025 performance summary for the development team. Delivered cross-layer trace propagation and enhanced error tracing across .NET, Unity, Cocoa, and native layers; upgraded SDKs and deepened testing capabilities. Implemented cross-platform trace ID propagation to improve cross-layer error correlation, and refined Unity/mobile context for better analytics. Strengthened CI/CD stability and platform automation to reduce release risk and accelerate feedback. Demonstrated proficiency across C#, Unity, Java/NDK, iOS/macOS, and Android ecosystems, with a strong focus on business value through faster root-cause analysis and richer telemetry.

March 2025

7 Commits • 5 Features

Mar 1, 2025

Month: 2025-03 monthly summary focusing on business value and technical achievements across getsentry repositories. Key features delivered include Unity crash status reporting with GetLastRunState and CrashedLastRun enum and improved logging, ANR integration improvements for thread-safe updates, and build system cleanup removing an unused DownloadNDK target in Android build. In addition, cross-repo work includes enabling Hybrid SDK trace context propagation across the native layer with a dependency bump, and updating Unity native support documentation to clarify initialization modes and platform implications. These efforts collectively improve reliability, observability, and developer onboarding, reducing potential incidents and enabling better cross-layer debugging across Unity, Java, docs, and native tooling.

February 2025

18 Commits • 5 Features

Feb 1, 2025

February 2025 performance summary — Strengthened observability, platform parity, and CI reliability across getsentry studios. Delivered concrete features, fixes, and documentation updates across Unreal, Unity, Docs, Java, and Native SDKs, focusing on business value and developer experience. Key outcomes: - Strengthened end-to-end issue analysis by fixing debug symbol upload in Unreal and aligning with latest Sentry CLI (debug-files upload). - Centralized, clarified configuration guidance across .NET, Unity, iOS, and Android; removed deprecated enable-tracing option; updated initialization notes and hooks for screenshot and view hierarchy to improve user guidance and control over event reporting. - Enhanced Sentry Unity SDK with improved error capture and event processing, including BeforeCapture callbacks and EventProcessor-based attachments, plus cross-platform CLI error handling and updated initialization notes. - Introduced traceability controls and API surface in Java (enableTraceIdGeneration) to coordinate trace IDs across hybrid SDK layers. - Enabled cross-SDK trace propagation in Sentry Native with sentry_set_trace, accompanied by API, header, and unit-test updates for reliable cross-component correlation. - These efforts collectively reduce debugging time, improve cross-platform consistency, and provide clearer observability across the stack.

January 2025

27 Commits • 8 Features

Jan 1, 2025

January 2025 monthly summary: Highlights across getsentry repos with a focus on business value and technical achievements. Key CI/CD and platform improvements stabilized build pipelines for Unity/mobile, enabling faster feedback and more reliable releases. Repos contributed to getsentry/sentry-unity, getsentry/sentry-docs, getsentry/craft, getsentry/sentry-dotnet, and getsentry/sentry-native, delivering both new features and fixes that reduce CI failures, improve crash handling, and improve developer experience. Highlights include unified main/non-main CI runs for streamlined pipelines, ANR event mechanism for better crash/ANR handling, dynamic preview releases configuration in craft, and major CI stability fixes (setup-dotnet OS pinning, correct Java version). Unity was updated to 2022.3.55f1 to fix compatibility; additional fixes include Android device testing, iOS logging improvements, ProGuard updates, and documentation enhancements.

December 2024

4 Commits • 4 Features

Dec 1, 2024

December 2024: Delivered foundational Unity SDK initialization improvements and reliability enhancements across iOS and Android, strengthened CI stability for Android tests, and expanded developer documentation on macOS file system permissions. The changes enable earlier configuration, more robust native integrations, more reliable builds, and clearer known-limitations guidance, accelerating integration for customers and reducing support touchpoints.

November 2024

15 Commits • 1 Features

Nov 1, 2024

November 2024 performance highlights for getsentry/sentry-unity: Delivered a unified programmatic configuration workflow for Sentry CLI options via OptionConfiguration, consolidating runtime/build-time settings into a single model, with updates to sample config and editor UI, asset-path refactor, and changelog alignment. Stabilized CI and Unity packaging pipelines with reliable test reporting, macOS runner updates, and Unity version auto-detection for packaging. Strengthened native SDK initialization and error reporting robustness with safer shutdown when native support is disabled, suppressed and logged initialization exceptions, and improved logging/argument handling. Improved Unity sample build compatibility by removing legacy Xcode flags and auto-updating project settings. Enhanced Cocoa SDK version extraction with a broader regex for more robust version capture. Business impact includes faster feedback loops, reduced build failures, clearer configuration, and more resilient Unity integrations.

October 2024

6 Commits • 2 Features

Oct 1, 2024

October 2024 monthly summary for getsentry/sentry-unity: Delivered CI reliability improvements, cross-platform stability fixes, and Windows native crash reporting. These changes reduce flaky tests, prevent initialization crashes on restricted platforms, and enable native crash telemetry for Windows builds, accelerating debugging and improving build reliability across Unity deployments.

Activity

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Quality Metrics

Correctness93.2%
Maintainability90.2%
Architecture88.2%
Performance86.4%
AI Usage21.4%

Skills & Technologies

Programming Languages

BashBatchCC#C++GitJSONJavaKotlinMarkdown

Technical Skills

.NETAI IntegrationAPI DesignAPI IntegrationAPI developmentAndroidAndroid DevelopmentAndroid NDKAndroid TestingApplication Context ManagementAsset ManagementAsynchronous ProgrammingAutomationBackend DevelopmentBug Fixing

Repositories Contributed To

10 repos

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

getsentry/sentry-unity

Oct 2024 Feb 2026
17 Months active

Languages Used

C#PowerShellXMLYAMLMarkdownShellUnityScriptC

Technical Skills

Android DevelopmentBuild AutomationBuild SystemsCI/CDError HandlingGitHub Actions

getsentry/sentry-docs

Dec 2024 Feb 2026
14 Months active

Languages Used

MarkdownC#C++

Technical Skills

DocumentationTechnical WritingUnity DevelopmentSDK ConfigurationSDK IntegrationDistributed Tracing

getsentry/sentry-dotnet

Jan 2025 Feb 2026
8 Months active

Languages Used

C#PowerShellXML

Technical Skills

Configuration ManagementPrivacy ControlsSDK DevelopmentAPI DesignBuild AutomationBuild Configuration

getsentry/sentry

Nov 2025 Apr 2026
3 Months active

Languages Used

TypeScriptPython

Technical Skills

ReactTypeScriptfront end developmentAPI developmentSentry integrationbackend development

getsentry/sentry-native

Jan 2025 Mar 2026
4 Months active

Languages Used

MarkdownCJavaGit

Technical Skills

DocumentationAPI DesignAndroid NDKC/C++Native DevelopmentUnit Testing

getsentry/craft

Jan 2025 Apr 2025
2 Months active

Languages Used

TypeScript

Technical Skills

Configuration ManagementRelease EngineeringRelease ManagementVersion ControlTestingUnit Testing

getsentry/sentry-java

Feb 2025 Jan 2026
3 Months active

Languages Used

JavaKotlinMarkdown

Technical Skills

Android DevelopmentMobile DevelopmentSDK DevelopmentTracingCross-Platform DevelopmentDistributed Tracing

getsentry/sentry-unreal

Feb 2025 Feb 2025
1 Month active

Languages Used

BatchShell

Technical Skills

CI/CDScripting

getsentry/sentry-cocoa

Apr 2025 Apr 2025
1 Month active

Languages Used

Objective-CSwift

Technical Skills

Distributed TracingSDK DevelopmentUnit TestingiOS Development

sentry-demos/empower

May 2025 May 2025
1 Month active

Languages Used

PythonYAML

Technical Skills

CI/CDScripting