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Tiago Costa

PROFILE

Tiago Costa

Tiago Costa worked extensively on the Zacqary/kibana repository, focusing on stabilizing CI pipelines and improving release management. He implemented automated skipping of flaky test suites, reducing CI noise and accelerating feedback cycles. By upgrading dependencies such as TypeScript and Sass, and maintaining version alignment across major and minor releases, Tiago ensured consistent build quality and smoother deployments. His work included updating pipeline configurations, refining deployment scripts, and enhancing test automation using JavaScript, TypeScript, and Cypress. Through disciplined version control and configuration management, Tiago delivered more reliable releases and streamlined development workflows, demonstrating depth in backend development and CI/CD automation.

Overall Statistics

Feature vs Bugs

43%Features

Repository Contributions

364Total
Bugs
43
Commits
364
Features
33
Lines of code
10,889
Activity Months12

Work History

October 2025

23 Commits • 2 Features

Oct 1, 2025

October 2025 – Zacqary/kibana: Focused on ensuring release readiness and CI stability across major Kibana versions. Key work included cross-version maintenance with multi-version bumps and config synchronization across releases from 8.18.x to 9.3.0, including updates to CI/config, pipeline resource definitions, and Renovate integration. I also stabilized CI by skipping flaky test suites across multiple commits, reducing flakiness and shortening feedback cycles. Additionally, version metadata was updated after releases (v9.2.1, v9.1.7, v8.19.7) to keep builds/docs aligned with current releases. These efforts improve release reliability, reduce drift, and enhance backward-compatibility, enabling smoother backports and faster delivery. Technologies/skills demonstrated include CI/CD automation, version management, backport/configuration strategies, Renovate configuration, and test stability practices.

September 2025

6 Commits

Sep 1, 2025

September 2025: Focused on stabilizing CI by addressing flaky tests in the Kibana repository. Implemented targeted test suite skips to prevent CI instability and release blockers, covering generic test suite, Scan operation, Response console, AWS cloud security posture integration, Privileged User Monitoring onboarding, and integration onboarding tests. Delivered six commits to disable flaky tests, enabling more reliable nightly builds and faster feedback.

August 2025

21 Commits • 2 Features

Aug 1, 2025

Monthly work summary for August 2025 (2025-08). Focus on delivering stability and alignment across the Kibana repo. Key steps: upgrade TypeScript, stabilize CI by skipping flaky tests and ES promotion failures, and align dependencies post-release across v8/v9 lines.

July 2025

26 Commits • 7 Features

Jul 1, 2025

July 2025 monthly summary for Zacqary/kibana focused on stabilizing CI, updating testing baselines, and tightening deployment and dev CLI workflows. Delivered features and fixes that reduce risk in CI runs, improve deployment correctness, and enhance developer efficiency, while maintaining build cleanliness and version hygiene to support faster, more reliable releases.

June 2025

32 Commits • 4 Features

Jun 1, 2025

June 2025 performance summary for Zacqary/kibana: Focused on stabilizing the CI workflow, strengthening dependency hygiene, and accelerating release readiness. Completed coordinated changes to skip flaky test suites in CI, synchronized version metadata after major/minor bumps, updated the Sass embedding library, and stabilized deployment by skipping a failing ES promotion. Added backport RC coverage for 9.1 and tightened pipeline resource definitions around the 9.2.0 cycle. These actions reduced pipeline noise, lowered deployment risk, and positioned the project for faster, more reliable feature delivery.

May 2025

21 Commits • 2 Features

May 1, 2025

May 2025 monthly summary for Zacqary/kibana: Focused on CI stabilization and version management to support faster, safer releases. Delivered three main outcomes: 1) Stabilized CI by skipping flaky test suites in two batches of commits (12 and 5 skips), reducing flaky test churn. 2) Version bumps after releases to align dependencies for v8.17.7, v8.18.2, and v9.0.2. 3) Version alignment after v8.18.3 bump to keep dependencies consistent. This work improved release velocity, reduced CI noise, and strengthened repo maintenance practices. Tech skills demonstrated: CI/CD governance, semantic versioning, automation hygiene, and release management.

April 2025

27 Commits • 2 Features

Apr 1, 2025

April 2025 monthly performance summary for Zacqary/kibana: Delivered a key feature upgrade by replacing native-hdr-histogram with hdr-histogram-js, stabilized CI/test runs by skipping flaky suites across the test matrix, and completed extensive version/dependency maintenance with polyfill updates. Cleaned up pipeline resources by removing 8.16, enabling smoother releases. These actions reduced flaky test noise, shortened feedback cycles, and improved reliability across builds and ships.

March 2025

23 Commits • 1 Features

Mar 1, 2025

March 2025 monthly summary focusing on CI reliability, test infrastructure, and release hygiene across two Kibana repositories. Key outcomes include stabilizing CI by skipping flaky test suites, correcting test utilities imports, and updating version metadata after releases to maintain accurate release notes and downstream expectations. These efforts reduced false positives in CI, improved feedback loops, and enhanced release confidence for cross-team stakeholders.

February 2025

18 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary focusing on key business and technical outcomes across two Kibana-related repos. Demonstrated improvements in build reliability, tooling modernization, and release discipline, enabling faster, more predictable delivery to customers.

January 2025

46 Commits • 4 Features

Jan 1, 2025

2025-01 monthly summary for afharo/kibana: Delivered measurable improvements to CI stability, version management, and release readiness. Focused on stabilizing the CI pipeline, reducing noise from flaky tests and promotions, and aligning versioning post-releases to accelerate delivery and business value.

December 2024

50 Commits • 4 Features

Dec 1, 2024

December 2024: Kibana (tkajtoch/kibana) monthly summary focusing on CI stability, forward-compatibility, TLS reliability, and dependency alignment. Delivered key features and fixed critical issues to reduce CI noise, improve deployment reliability, and prepare for upcoming v9 pipeline.

November 2024

71 Commits • 4 Features

Nov 1, 2024

November 2024 monthly summary for tkajtoch/kibana focusing on CI stability, code quality, and version hygiene. Delivered automated skipping of flaky test suites in CI, stabilized flaky-test handling across multiple commits, performed version pin housekeeping after v8.x releases, and fixed ESLint issues. Result: reduced CI noise, faster feedback, and more reliable release readiness.

Activity

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Quality Metrics

Correctness85.8%
Maintainability98.4%
Architecture88.8%
Performance96.0%
AI Usage20.2%

Skills & Technologies

Programming Languages

BinaryDockerfileGroovyJSONJavaScriptNASCSSShellTypeScriptYAML

Technical Skills

API IntegrationAPI Integration TestingAPI TestingBackend DevelopmentBranch ManagementBuild AutomationBuild EngineeringBuild ManagementBuild Pipeline ConfigurationBuild Pipeline ManagementBuild SystemsBuild ToolsBuildkiteCI/CDCLI Development

Repositories Contributed To

4 repos

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

Zacqary/kibana

Mar 2025 Oct 2025
8 Months active

Languages Used

TypeScriptGroovyJavaScriptShellYAMLJSONBinaryNA

Technical Skills

CI/CDDebuggingQuality AssuranceTestingAPI TestingBackend Development

tkajtoch/kibana

Nov 2024 Dec 2024
2 Months active

Languages Used

JavaScriptTypeScriptDockerfileNAYAMLtypescriptyaml

Technical Skills

API Integration TestingBackend DevelopmentCI/CDCypressDebuggingESLint

afharo/kibana

Jan 2025 Feb 2025
2 Months active

Languages Used

JavaScriptNAShellTypeScriptYAML

Technical Skills

Backend DevelopmentBuild AutomationBuild ToolsCI/CDConfiguration ManagementCypress

YulNaumenko/kibana

Feb 2025 Mar 2025
2 Months active

Languages Used

JSONJavaScriptSCSSTypeScript

Technical Skills

Build ToolsCI/CDConfiguration ManagementCypressDebuggingDependency Management

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