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Janet Cui

PROFILE

Janet Cui

Janet contributed to the sonic-net/sonic-mgmt, sonic-swss, and sonic-buildimage repositories, focusing on network automation, observability, and test reliability. She engineered new network topology configurations and expanded hardware SKU support, using Python and Ansible to streamline testbed management and configuration workflows. Janet integrated OpenTelemetry into sonic-swss for exporting SAI statistics, leveraging Rust and backend development skills to enhance metrics collection and performance monitoring. Her work included optimizing CI/CD pipelines, hardening test suites against flakiness, and developing containerized telemetry solutions. These efforts improved deployment stability, accelerated debugging, and ensured robust, scalable validation of complex network features across diverse hardware platforms.

Overall Statistics

Feature vs Bugs

52%Features

Repository Contributions

31Total
Bugs
10
Commits
31
Features
11
Lines of code
11,898
Activity Months11

Work History

February 2026

4 Commits • 4 Features

Feb 1, 2026

February 2026 monthly summary focusing on business value and technical achievements across the sonic-net repositories. Delivered notable performance optimizations, reliability improvements, telemetry updates, and expanded test coverage with clear, customer-facing impact.

January 2026

5 Commits • 2 Features

Jan 1, 2026

January 2026 performance review: Delivered measurable improvements in telemetry reliability and throughput across three repos. Key features delivered include: sonic-swss OpenTelemetry performance and reliability enhancements for countersyncd, sonic-buildimage OpenTelemetry container for high-frequency telemetry, and monitoring fixes; plus stabilization of the CI test suite in sonic-mgmt. Highlights by repo: - sonic-swss: OpenTelemetry performance and reliability enhancements for countersyncd, including a benchmarking suite to evaluate actor and end-to-end performance, batching OTEL messages for efficiency, and a retry mechanism to handle transient collector outages. - sonic-buildimage: OpenTelemetry container to boost high-frequency telemetry with configuration validation and service management; fixed a monit service name conflict to ensure proper monitoring. - sonic-mgmt: Adjusted tests to xfail srv6 dataplane test cases in a problematic topology to avoid false positives and stabilize CI. Business impact and accomplishments: - Improved observability reliability and performance with batched telemetry and robust retry paths, reducing data loss and improving metric accuracy under transient collector outages. - Accelerated telemetry collection and monitoring through containerized OTEL support, enabling higher-frequency telemetry workloads with controlled configuration and service lifecycle. - Increased CI stability by aligning tests with supported topologies, reducing flaky test outcomes. Technologies/skills demonstrated: - OpenTelemetry integration (countersyncd, OTEL client/collector interactions, OTEL batching) - Retry logic and reliability engineering for telemetry pipelines - Containerization and service management for OTEL in a dedicated container - Test strategy and topology-aware test adjustments to reduce false positives

November 2025

4 Commits • 2 Features

Nov 1, 2025

Month 2025-11 focused on strengthening reliability, triage efficiency, and observability across sonic-mgmt and sonic-swss. Key outcomes include substantial test-suite hardening in sonic-mgmt to reduce noise from unsupported Mellanox IPv6 everflow tests and to surface known SN5640 issues through targeted xfails and platform-specific triage logic; and a major observability uplift in sonic-swss with OpenTelemetry support for SAI statistics, including OTLP gauge metrics and an OtelActor for exporting metrics with configurable CLI options. These changes diminish false positives, accelerate debugging, and provide standardized metrics for performance monitoring of high-frequency workflows.

August 2025

2 Commits

Aug 1, 2025

Month: 2025-08 — Sonic-mgmt test stability and accuracy improvements. Delivered two critical test fixes that reduce CI flakiness and improve measurement fidelity under load, with clear commit traceability.

July 2025

3 Commits

Jul 1, 2025

July 2025: Strengthened test suite reliability and CI efficiency for sonic-mgmt by gating tests based on hardware support and topology context. Delivered targeted test-skip enhancements and topology-aware optimizations, reducing false positives and saving compute resources. All changes tracked to specific commits.

June 2025

4 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for sonic-net/sonic-mgmt: Delivered stability and hardware coverage improvements that strengthen CI reliability and platform support, enabling faster validation and broader product readiness.

May 2025

1 Commits • 1 Features

May 1, 2025

May 2025: Focused on expanding hardware SKU coverage and improving reliability in sonic-mgmt port utilities. Delivered Mellanox SN5640-C448O16 support in port utilities, including accurate port alias-to-name mapping during topology creation, and resolved interface lookup issues for this SKU, reducing topology deployment failures and enabling smoother onboarding of Mellanox SN5640-C448O16-based systems across customers.

April 2025

3 Commits

Apr 1, 2025

April 2025 monthly summary for sonic-mgmt: Delivered reliability improvements to the test suite by hardening portchannel checks, mitigating flaky isolated-topology hash tests, and filtering Not Applicable entries from port lists. These changes reduce CI flakiness and prevent test-run failures due to missing data or incorrect command construction, enabling faster and more reliable validation of network-management features.

March 2025

1 Commits

Mar 1, 2025

March 2025: Focused on stabilizing DHCP relay tests in sonic-mgmt to prevent false negatives on the T0 isolated topology, improving CI reliability and feedback. Delivered DHCP Relay Test Stabilization by skipping DHCP relay related tests when the feature is disabled. Change tracked in sonic-net/sonic-mgmt with commit e58cebc89dd30a771bb452fd8fbe9d9a758f913e. Business value: higher test accuracy, faster feedback, and reduced CI churn.

December 2024

3 Commits

Dec 1, 2024

December 2024 monthly summary for sonic-mgmt: Focused on reliability and stability of network provisioning and control-plane convergence. Delivered fixes to enable add-topo stability by resolving a missing template via a symbolic link, extended BGP neighbor convergence timeouts, and hardened test stability by disabling IPv6-related drops in QoS tests. These changes reduce flaky deployments, improve CI reliability, and accelerate safe network topology provisioning in production.

November 2024

1 Commits • 1 Features

Nov 1, 2024

November 2024 (2024-11) monthly summary for sonic-net/sonic-mgmt focusing on the delivery of a new network topology configuration and the resulting impact.

Activity

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Quality Metrics

Correctness92.0%
Maintainability89.6%
Architecture86.4%
Performance87.0%
AI Usage21.2%

Skills & Technologies

Programming Languages

BashDockerfileJinja2PythonRustShellYAML

Technical Skills

AnsibleAutomationBGPBGP ConfigurationCI/CDCommand Line InterfaceConfiguration ManagementContainerizationDebuggingDevOpsDockerFixture ManagementHardware SupportMonitoringNetwork Automation

Repositories Contributed To

3 repos

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

sonic-net/sonic-mgmt

Nov 2024 Feb 2026
11 Months active

Languages Used

YAMLJinja2Python

Technical Skills

AnsibleNetwork ConfigurationTestbed ManagementAutomationBGP ConfigurationConfiguration Management

sonic-net/sonic-swss

Nov 2025 Feb 2026
3 Months active

Languages Used

Rust

Technical Skills

OpenTelemetryRustbackend developmentobservabilityOpenTelemetry integrationasynchronous programming

sonic-net/sonic-buildimage

Jan 2026 Feb 2026
2 Months active

Languages Used

BashDockerfilePythonShellYAML

Technical Skills

Configuration ManagementContainerizationDevOpsMonitoringScriptingDocker