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Tetiana Yeremenko

PROFILE

Tetiana Yeremenko

Worked on the kubernetes/autoscaler repository to enhance cluster autoscaler reliability and observability using Go and Kubernetes. Developed and instrumented latency tracking for node removal, enabling precise measurement of scale-down timing and supporting data-driven optimization. Built a Node Removal Threshold Management API to address stale threshold updates, improving autoscaler decision accuracy. Enhanced lifecycle management by refining metrics and logging for nodes transitioning between unneeded and needed states, and stabilized latency tracking to prevent metric flapping and negative values. Expanded test coverage and improved operational telemetry, ensuring more reliable backend behavior and clearer insights for cloud infrastructure operators and engineers.

Overall Statistics

Feature vs Bugs

75%Features

Repository Contributions

6Total
Bugs
1
Commits
6
Features
3
Lines of code
1,050
Activity Months3

Work History

January 2026

3 Commits

Jan 1, 2026

January 2026 monthly summary for kubernetes/autoscaler focused on stabilizing latency tracking and improving metric accuracy to support reliable node lifecycle management and capacity decisions. Implemented targeted fixes to prevent latency metric flapping, ensured nodes remain tracked while marked unremovable, and logged only positive latencies. Enhanced observability by detailing unneeded nodes and their latency metrics, and expanded test coverage to guard against regressions. These changes reduce noisy signals, improve decision quality for autoscaling, and provide clearer telemetry for operators and engineers.

December 2025

2 Commits • 2 Features

Dec 1, 2025

December 2025: Delivered two high-impact features in kubernetes/autoscaler that strengthen autoscaling reliability and observability. Implemented a robust Node Removal Threshold Management API for the Cluster Autoscaler to retrieve and set thresholds, addressing stale/incorrect threshold updates. Enhanced Observability with improved latency tracking and lifecycle cleanup, including proper reporting when a node becomes needed again and better logging/metrics during transitions between unneeded and needed. These changes reduce mis-scaling, improve decision timing, and provide precise latency/metrics for capacity planning. Demonstrated focused execution, cross-team collaboration with the autoscaler repo, and disciplined testing practices.

August 2025

1 Commits • 1 Features

Aug 1, 2025

August 2025: Focused on enhancing observability for cluster autoscaler by adding latency tracking for node removal. This instrumentation enables data-driven optimization of scale-down, supporting cost efficiency and reliability. The work centers on kubernetes/autoscaler with a commit adding metrics for removal latency.

Activity

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Quality Metrics

Correctness96.6%
Maintainability83.4%
Architecture86.6%
Performance86.8%
AI Usage23.4%

Skills & Technologies

Programming Languages

Go

Technical Skills

GoKubernetesbackend developmentcloud infrastructure

Repositories Contributed To

1 repo

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

kubernetes/autoscaler

Aug 2025 Jan 2026
3 Months active

Languages Used

Go

Technical Skills

GoKubernetesbackend developmentcloud infrastructure