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Exceeds
Jan Peer Stöcklmair

PROFILE

Jan Peer Stöcklmair

Over eight months, contributed to the getsentry/sentry-javascript and related repositories by building and enhancing observability, error tracking, and deployment workflows for JavaScript and TypeScript applications. Focused on Cloudflare Workers integration, implemented robust tracing, logging, and memory management features, including distributed tracing and instrumentation for serverless environments. Improved developer experience through detailed documentation, streamlined CI/CD pipelines, and proactive dependency management. Addressed reliability and security by modernizing tooling, refining error handling, and introducing runtime type validation. Leveraged technologies such as Node.js, React, and AWS to deliver scalable SDK features, comprehensive end-to-end testing, and cross-platform integration, supporting both backend and frontend development.

Overall Statistics

Feature vs Bugs

78%Features

Repository Contributions

144Total
Bugs
20
Commits
144
Features
69
Lines of code
75,476
Activity Months8

Work History

May 2026

18 Commits • 6 Features

May 1, 2026

May 2026 focused on delivering Cloudflare-centric improvements, expanding observability, and strengthening testing and reliability across getsentry/sentry-javascript, getsentry/sentry-docs, and getsentry/sentry-cli. Key changes include edge-runtime error tracking enhancements, trace propagation, improved test utilities, and proactive quality improvements in tooling and documentation.

April 2026

4 Commits • 2 Features

Apr 1, 2026

April 2026: Delivered high-impact instrumentation and build-stability improvements across the JavaScript SDK and docs. Key outcomes include reliable Cloudflare Workers instrumentation with cross-reset persistence, basic WorkerEntrypoint support, alignment of Gatsby plugin error handling to the bundler-plugin-core API to prevent build-time errors, improved Gatsby build reliability, and updated documentation for Next.js tracing using Vercel waitUntil. These changes reduce runtime instrumentation gaps, prevent flaky builds, and improve developer experience with clearer guidance for tracing Next.js deployments.

March 2026

27 Commits • 18 Features

Mar 1, 2026

March 2026 was marked by substantial progress across getsentry/sentry-javascript and getsentry/sentry-docs, delivering robust Cloudflare client lifecycle management, foundational work for the new Effect SDK, expanded observability, and improved developer experience. Key enablement included a disposable Cloudflare client with safe recreation, memory-safety improvements around promise handling, and a shift toward browser-friendly layers for the Effect SDK. Cloudflare integration reliability was enhanced with environment typing fixes and improved local development event handling, complemented by multi-worker Cloudflare tests and Astro Pages refinements to reduce bundle size. Documentation and templates were updated to support onboarding and adoption of the new capabilities, including the Effect SDK docs and Next.js/Vite environment guidance.

February 2026

22 Commits • 13 Features

Feb 1, 2026

February 2026 was a productive month delivering business value through enhanced observability, documentation, and infrastructure hardening across Getsentry repositories. Highlights include expanding logging capabilities with the Sentry Winston transport (log level filtering and custom level mapping), adding a dedicated Firebase section for Cloud Functions for Firebase, and clarifying Prisma OpenTelemetry trace types. Cloudflare-related work spanned extensive docs and deployment improvements (moving known limitations, Next.js CF instructions, Wrangler link, and CF_VERSION_METADATA rationale), plus enabling Astro on CF Workers and instrumenting Cloudflare Durable Object Storage API for better observability. A standardized approach to SDK environment variables reduces configuration friction across platforms. We also advanced workflow efficiency (PR ticketing to target develop/master). These efforts improve developer time-to-value, reliability, and cross-service instrumentation readiness.

January 2026

31 Commits • 11 Features

Jan 1, 2026

January 2026 monthly performance summary for Getsentry engineering across repositories (sentry, sentry-wizard, sentry-javascript, sentry-cli, sentry-docs). The month focused on stabilizing Cloudflare-related workflows, enhancing error visibility, and strengthening build/dependency reliability, while delivering user-facing features that improve observability and deployment workflows.

December 2025

24 Commits • 8 Features

Dec 1, 2025

December 2025 monthly work summary focusing on key accomplishments across Sentry JavaScript and related repos. Delivered measurable business value by improving linkability, reliability, security postures, and developer experience across JavaScript SDK, Cloudflare integrations, and build reproducibility. Highlights include cross-org issue referencing, Cloudflare spans reliability fixes, CI workflow streamlining, tooling modernization, and reproducible builds for MCP builds. Additional momentum came from Cloudflare integration scaffolding in Wizard and proactive dependency updates across docs and CLI ecosystems.

November 2025

17 Commits • 10 Features

Nov 1, 2025

November 2025 performance summary focusing on reliability, security, and developer productivity across the Sentry JS ecosystem. Key outcomes include strengthened test coverage and type safety for tracing (including Cloudflare worker end-to-end checks), a configurable PromiseBuffer to throttle concurrent event processing, TypeScript migration and modernization across tooling, security and performance upgrades (js-yaml CVE patch and undici-based binary downloads), and UX/docs improvements for adjacent tracing and Firebase integrations to improve discoverability and onboarding.

October 2025

1 Commits • 1 Features

Oct 1, 2025

October 2025 focused on delivering key observability improvements through the Sentry JavaScript SDK 10.21.0 release, along with build system updates to improve release stability. The work enhances UI profiling and instrumentation coverage, enabling faster issue diagnosis and performance optimization for developers using the SDK.

Activity

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Quality Metrics

Correctness97.0%
Maintainability90.6%
Architecture93.2%
Performance90.6%
AI Usage25.6%

Skills & Technologies

Programming Languages

JSONJavaScriptMDXMarkdownTypeScriptYAML

Technical Skills

API DevelopmentAPI IntegrationAPI developmentAPI integrationAWSAstroAstro frameworkAsynchronous ProgrammingBuild AutomationCI/CDChangelog ManagementCloudflareCloudflare DevelopmentCloudflare SDKCloudflare Workers

Repositories Contributed To

7 repos

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

getsentry/sentry-javascript

Oct 2025 May 2026
8 Months active

Languages Used

MarkdownTypeScriptJSONJavaScriptYAML

Technical Skills

Changelog ManagementDocumentationCloudflare WorkersTestingTypeScriptasynchronous programming

getsentry/sentry-docs

Nov 2025 May 2026
7 Months active

Languages Used

MarkdownYAMLJavaScriptTypeScriptMDX

Technical Skills

Firebase integrationGitHub workflowsUI/UX designdocumentationlabel managementtechnical writing

getsentry/sentry-cli

Nov 2025 May 2026
5 Months active

Languages Used

JSONJavaScriptTypeScriptYAML

Technical Skills

API DevelopmentAPI IntegrationContinuous IntegrationDevOpsJavaScriptNode.js

getsentry/sentry-wizard

Nov 2025 Jan 2026
3 Months active

Languages Used

JSONJavaScriptYAMLMarkdownTypeScript

Technical Skills

GitHub ActionsNode.jsPackage ManagementCloudflare WorkersConfiguration ManagementDevOps

getsentry/sentry

Nov 2025 Feb 2026
4 Months active

Languages Used

JavaScriptTypeScript

Technical Skills

ReactUI/UX designfront end developmentCloudflareTypeScript

getsentry/sentry-javascript-bundler-plugins

Nov 2025 Feb 2026
2 Months active

Languages Used

JSONMarkdown

Technical Skills

JavaScriptNode.jschangelog managementdependency managementversion control

getsentry/sentry-mcp

Nov 2025 Dec 2025
2 Months active

Languages Used

TypeScriptYAML

Technical Skills

Sentry integrationbackend developmentevent handlingCloudflare WorkersContinuous IntegrationDependency Management