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Jeanette Tan

PROFILE

Jeanette Tan

Worked across the grafana/mimir, grafana/mimir-prometheus, and prometheus/prometheus repositories to deliver features and fixes that improved reliability, maintainability, and user guidance for metrics infrastructure. Enhanced CI/CD pipelines and standardized logging using Go and GitHub Actions, upgraded container images for deployment stability, and improved error handling and test coverage for remote read clients and histogram queries. Addressed division-by-zero bugs in Prometheus histograms, expanded regression testing, and clarified documentation to reduce user confusion. Delivered release notes and changelog updates for traceability, while refactoring test frameworks and configuration management to support more robust, predictable, and maintainable backend and deployment workflows.

Overall Statistics

Feature vs Bugs

69%Features

Repository Contributions

26Total
Bugs
4
Commits
26
Features
9
Lines of code
391
Activity Months5

Work History

February 2026

5 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary: Delivered critical reliability and debug-ability improvements for histogram-based queries across grafana/mimir-prometheus and Prometheus cores. Key work focused on enhancing error visibility, stabilizing histogram averaging, and expanding regression testing to prevent regressions, translating to measurable business value in uptime, faster issue resolution, and more trustworthy metrics.

January 2026

2 Commits • 2 Features

Jan 1, 2026

January 2026 monthly summary focused on delivering core features, stabilizing the deployment surface, and enhancing user guidance across two key repositories.

July 2025

7 Commits • 2 Features

Jul 1, 2025

July 2025: Delivered release documentation and fixes across two Grafana Mimir repositories, strengthening release transparency, observability, and rollout reliability. Key work included: release notes and changelog updates for Mimir 2.17.0-rc.0/rc.1; Helm chart release notes for 5.8.0-rc.0 (rollout-operator annotations/labels); a critical bug fix in grafana/mimir-prometheus to use metadata.MetricFamilyName consistently in debug logs for histogram and summary data points. All changes are linked to specific commits for traceability, enabling faster onboarding and future maintenance. Commits touched include: 2.17.0 RC changelog updates (ee32e822..., 522b02e7..., abf3bc05..., 5745e328..., 9e638ffe...), Helm changelog update (fa0d09e6...), and logging fix (9515d5cc...).

April 2025

8 Commits • 2 Features

Apr 1, 2025

April 2025 monthly summary highlighting business value and technical achievements across grafana/mimir-prometheus and grafana/prometheus. Focused on delivering reliability, maintainability, and better error visibility.

March 2025

4 Commits • 2 Features

Mar 1, 2025

March 2025 monthly summary focusing on delivering reliability, maintainability, and extended configurability across Grafana’s metrics stack. Key work included test hygiene improvements, CI/CD simplification, and enhanced remote read client configuration, delivering business value through more robust tests, lower maintenance costs, and flexible integration capabilities.

Activity

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Quality Metrics

Correctness97.8%
Maintainability96.2%
Architecture95.4%
Performance94.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

GoMarkdownTypeScriptYAML

Technical Skills

API integrationBuild FixesCI/CDChangelog ManagementCode Linting ConfigurationCode RefactoringConfiguration ManagementContainerizationDebuggingDevOpsDocumentationDocumentation ManagementGitHub ActionsGoGo programming

Repositories Contributed To

4 repos

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

grafana/mimir-prometheus

Mar 2025 Feb 2026
4 Months active

Languages Used

GoYAML

Technical Skills

CI/CDCode RefactoringGitHub ActionsGoLintingTesting

grafana/mimir

Jul 2025 Jan 2026
2 Months active

Languages Used

MarkdownYAML

Technical Skills

Changelog ManagementDocumentationDocumentation ManagementContainerizationDevOpsKubernetes

grafana/prometheus

Mar 2025 Apr 2025
2 Months active

Languages Used

Go

Technical Skills

Gobackend developmentAPI integrationGo programmingerror handlingtesting

prometheus/prometheus

Jan 2026 Feb 2026
2 Months active

Languages Used

MarkdownTypeScriptGo

Technical Skills

Reactdocumentationfront end developmentGoGo programmingbackend development