EXCEEDS logo
Exceeds
Tom Tan

PROFILE

Tom Tan

Over an 11-month period, contributed to core observability and telemetry projects such as grafana/opentelemetry-rust, microsoft/cpp_client_telemetry, and open-telemetry/opentelemetry-cpp, focusing on backend development, build automation, and performance optimization. Delivered features like short-circuiting log event checks in Rust, configurable metric cardinality in C++, and automated CI triage labeling using GitHub Actions. Addressed reliability by stabilizing CI pipelines, enforcing CMake versioning, and improving test robustness. Enhanced security and compliance through CodeQL upgrades and SSL verification controls. Maintained documentation and streamlined dependency management, demonstrating expertise in C++, Rust, CI/CD, and configuration management to improve code quality and developer workflows.

Overall Statistics

Feature vs Bugs

58%Features

Repository Contributions

26Total
Bugs
10
Commits
26
Features
14
Lines of code
1,267
Activity Months11

Your Network

5313 people

Same Organization

@microsoft.com
4720
GitOpsMember
Ananta GuptaMember
Abi GicicMember
Abigail HartmanMember
Abram SandersonMember
Adam EttenbergerMember
Alexandre GattikerMember
Ami HollanderMember
AndersMember

Work History

April 2026

5 Commits • 4 Features

Apr 1, 2026

April 2026 achievement snapshot: Focused on reliability, security, and release readiness across two repositories. Delivered features and stability improvements that drive business value: reduced telemetry load, configurable security controls, and more predictable CI/test outcomes. Highlights include opt-in built-in SDK stats events to reduce OneCollector load; configurable SSL verification for the libcurl HTTP client; software version bump to 3.10.100.1; OTLP gRPC log exporter TLS-MTLS preview toggle; and test stability improvements via RFC5737 TEST-NET address in curl tests.

March 2026

4 Commits • 2 Features

Mar 1, 2026

March 2026 performance and reliability-focused month across three OpenTelemetry-related repos. Delivered benchmarking framework improvements for open-telemetry/opentelemetry-cpp, fixed issue template label normalization for open-telemetry/otel-arrow, and upgraded the OpenTelemetry C++ library to 1.26.0 in microsoft/vcpkg. These contributions enhanced performance evaluation accuracy, improved issue triage through correct labeling, and ensured downstream projects stay aligned with current upstream benchmarks and dependencies. The work was achieved through targeted code changes, build/script refinements, and dependency management, supporting faster decision-making, reduced maintenance burden, and more predictable release readiness.

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 — Open-telemetry/otel-arrow: Implemented automated issue triage labeling in CI to tag new and reopened issues with 'triage:deciding', enabling faster prioritization and reducing manual triage effort. No major bug fixes recorded for this period. Overall impact includes improved issue throughput, standardized labeling, and clearer triage workflows. Technologies/skills demonstrated include CI automation, GitHub Actions workflows, and labeling conventions across the repo.

January 2026

4 Commits • 2 Features

Jan 1, 2026

January 2026 monthly summary focusing on key accomplishments, major fixes, and business impact across two telemetry repositories. Delivered concrete improvements to code analysis tooling, data correctness, and runtime reliability, enabling more robust observability and security posture.

November 2025

1 Commits • 1 Features

Nov 1, 2025

November 2025 monthly summary focused on maintaining accurate, developer-friendly documentation for the OTLP exporter in the opentelemetry-cpp repository, specifically updating vcpkg-related docs and dependencies to reflect current build requirements. The update reduces onboarding friction for users relying on the vcpkg workflow and aligns docs with gRPC and Protobuf configurations.

October 2025

2 Commits • 1 Features

Oct 1, 2025

Concise monthly summary for 2025-10 focusing on key deliverables and impact in open-telemetry/opentelemetry-cpp.

September 2025

4 Commits • 1 Features

Sep 1, 2025

Summary for 2025-09: Cross-repo improvements focused on stability, memory efficiency, and build reliability. In OpenTelemetry-Cpp, introduced a configurable metric cardinality limit with updated config and tests; fixed overflow handling in AttributesHashMap. In microsoft/cpp_client_telemetry, removed unreachable CMake installation prefix logic, simplifying the build and reducing risk of misconfiguration. These changes improve production readiness, lower memory footprint for metric-heavy workloads, and streamline developer workflows.

August 2025

1 Commits

Aug 1, 2025

August 2025 monthly summary focused on test stability improvements for the cpp_client_telemetry project. No new features released this month; primary work centered on stabilizing existing telemetry test paths and ensuring reliable CI.

April 2025

1 Commits

Apr 1, 2025

April 2025: Focus on CI stability for microsoft/cpp_client_telemetry. Implemented enforcement of a minimum CMake version (3.5) in CI to prevent compatibility issues from newer CMake releases and reduce CI flakiness. Linked to commit c380bc88d7e0b7de86c09bd3b3e9f894481e4323 and the related PR note [CI] set CMake minimum version requirement via env var for the break by CMake 4 (#1340). This change enhances reliability of builds, accelerates feedback loops for contributors, and protects release pipelines.

February 2025

2 Commits • 1 Features

Feb 1, 2025

February 2025 (microsoft/cpp_client_telemetry): Delivered milestone CI improvements targeting Apple platforms and improved submodule stability in Android CI, resulting in more reliable builds and faster feedback. Key work included modernizing the iOS/macOS CI workflow and fixing submodule checkout in the Android CI pipeline. These changes align with current Apple development environments, reduce flaky tests, and support faster iteration for developers.

January 2025

1 Commits • 1 Features

Jan 1, 2025

January 2025 (2025-01) monthly summary for grafana/opentelemetry-rust: Delivered a targeted performance optimization in the Logger component by replacing a linear event_enabled check with a short-circuiting iterator approach. The change reduces unnecessary work in the log processing path, improving efficiency in high-throughput telemetry scenarios while keeping the logic simple and backward-compatible.

Activity

Loading activity data...

Quality Metrics

Correctness97.0%
Maintainability93.8%
Architecture93.0%
Performance90.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

C++CMakeJSONMarkdownPythonRustShellYAML

Technical Skills

API DevelopmentAPI developmentAttribute HandlingBazel build systemBug FixingBuild AutomationBuild System ConfigurationBuild SystemsC++C++ developmentCI/CDCMakeCode Quality AssuranceConfiguration ManagementContinuous Integration

Repositories Contributed To

5 repos

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

open-telemetry/opentelemetry-cpp

Sep 2025 Apr 2026
6 Months active

Languages Used

C++MarkdownPython

Technical Skills

Attribute HandlingC++MetricsMetrics SDKOpenTelemetrySoftware Development

microsoft/cpp_client_telemetry

Feb 2025 Apr 2026
6 Months active

Languages Used

CMakeShellYAMLC++

Technical Skills

Build SystemsCI/CDGitHub ActionsiOS DevelopmentmacOSBuild Automation

open-telemetry/otel-arrow

Feb 2026 Mar 2026
2 Months active

Languages Used

YAML

Technical Skills

CI/CDGitHub ActionsIssue Managementissue template managementrepository maintenance

grafana/opentelemetry-rust

Jan 2025 Jan 2025
1 Month active

Languages Used

Rust

Technical Skills

Performance OptimizationRustSoftware Engineering

microsoft/vcpkg

Mar 2026 Mar 2026
1 Month active

Languages Used

CMakeJSON

Technical Skills

CMakeDependency ManagementVersion Control