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Jakub Stejskal

PROFILE

Jakub Stejskal

Over four months, Stejskal contributed to projects including rapid7/strimzi-kafka-operator, streamshub/console, apache/flink, and apache/maven-surefire, focusing on CI/CD automation, security, and test reliability. He streamlined upgrade workflows in strimzi-kafka-operator by integrating upgrade scripts into system tests using shell scripting and CI/CD tools, reducing manual steps and improving test consistency. In streamshub/console, he enhanced OpenShift metrics integration by refining configuration management and strengthening OIDC/Kafka security using YAML and Kubernetes. For apache/flink, he managed dependency upgrades to improve security and maintainability, while in maven-surefire, he fixed test reporting for setup-phase failures, leveraging Java and test automation expertise.

Overall Statistics

Feature vs Bugs

75%Features

Repository Contributions

4Total
Bugs
1
Commits
4
Features
3
Lines of code
236
Activity Months4

Work History

October 2025

1 Commits

Oct 1, 2025

In 2025-10, delivered a critical reliability improvement for apache/maven-surefire by correctly handling and reporting failures in the @BeforeAll phase, ensuring accurate test run statistics and reducing misreports in CI for complex test suites. The change, linked to commit 4a47a1c44f3abe18164cc3a5d1287f440bb40684, improves how setup-phase failures are categorized and surfaced to developers and CI systems.

August 2025

1 Commits • 1 Features

Aug 1, 2025

Monthly summary for 2025-08: Focused on stability and security through a targeted dependency upgrade in the Apache Flink repository. Implemented a routine upgrade of Apache Commons Lang3 from 3.12.0 to 3.18.0, confined to dependency lists and NOTICE files, minimizing risk and ensuring alignment with supported and secure releases. No major bug fixes this month; the upgrade reduces potential security vulnerabilities and compatibility issues while preserving runtime behavior. Deliverables include updated dependency declarations and commit [FLINK-38193] Bump commons-lang3 to version 3.18.0 across the repository. The work demonstrates effective dependency management, maintainability, and compliance with security guidelines.

February 2025

1 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary for streamshub/console. Focused on security-oriented enhancements for the OpenShift Console Metrics integration, delivering a cleaner, safer default configuration path and improved OIDC/Kafka interoperability. The work reduces on-boarding friction for customers deploying metrics in OpenShift clusters and strengthens the security posture of the Console Metrics feature set.

November 2024

1 Commits • 1 Features

Nov 1, 2024

November 2024 monthly summary for rapid7/strimzi-kafka-operator: Focused on delivering business value through CI/CD process improvements and streamlined upgrade workflows. Key feature delivered this month reduced manual steps in upgrade pipelines, and overall impact includes faster upgrade cycles, improved test reliability, and clearer upgrade paths. Major bugs fixed: none reported for this period. Technologies/skills demonstrated include refactoring, shell scripting (sed), CI/CD automation with packit pipelines, system testing integration, and test plan optimization.

Activity

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Quality Metrics

Correctness90.0%
Maintainability85.0%
Architecture80.0%
Performance70.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

JavaShellYAML

Technical Skills

Build ToolsCI/CDConfiguration ManagementDependency ManagementJava DevelopmentKubernetesOpenShiftShell ScriptingTest Automation

Repositories Contributed To

4 repos

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

rapid7/strimzi-kafka-operator

Nov 2024 Nov 2024
1 Month active

Languages Used

Shell

Technical Skills

CI/CDShell Scripting

streamshub/console

Feb 2025 Feb 2025
1 Month active

Languages Used

YAML

Technical Skills

Configuration ManagementKubernetesOpenShift

apache/flink

Aug 2025 Aug 2025
1 Month active

Languages Used

Java

Technical Skills

Build ToolsDependency Management

apache/maven-surefire

Oct 2025 Oct 2025
1 Month active

Languages Used

Java

Technical Skills

Build ToolsJava DevelopmentTest Automation

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