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Katarina Sieklova

PROFILE

Katarina Sieklova

Over 14 months, contributed to osbuild/image-builder-frontend and osbuild/image-builder, delivering 33 features and resolving critical bugs to enhance image creation workflows. Focused on frontend and backend development, this work included UX improvements, analytics integration, compliance automation, and robust API design. Leveraging TypeScript, React, and Go, implemented features such as OpenSCAP compliance testing, image-mode blueprint creation, and advanced onboarding flows. Refactored components for maintainability, improved validation and localization, and strengthened test coverage using Playwright and Jest. The approach emphasized modular code organization, security compliance, and data-driven insights, resulting in more reliable, user-friendly, and scalable image-building and deployment processes.

Overall Statistics

Feature vs Bugs

89%Features

Repository Contributions

63Total
Bugs
4
Commits
63
Features
33
Lines of code
9,409
Activity Months14

Work History

April 2026

1 Commits • 1 Features

Apr 1, 2026

April 2026 monthly summary for osbuild/image-builder focused on delivering image-mode blueprint capability in the UI. Highlights include enabling image-mode blueprint creation by updating the schema and adding an image-mode placeholder in distributions, addressing a key UX limitation and enabling image-based deployment workflows.

March 2026

4 Commits • 3 Features

Mar 1, 2026

March 2026: Delivered security-focused image-building enhancements, expanded hosted service capabilities, and established backend support for bootable distributions with robust filtering and data modeling. Key features delivered include OpenSCAP boot-time compliance testing with a score gate in the image-builder-frontend and an Image mode toggle for hosted service enabling CRC API-driven bootable container selection. Backend improvements include a new immutable bootc image distributions endpoint in osbuild/image-builder, with query-based filtering and registry-gathering support to improve accuracy and reproducibility. No explicit major bugs were documented in scope for this month; the focus was on delivering end-to-end capabilities that reduce risk and accelerate deployments. Overall impact: higher security automation, faster and more flexible image provisioning, and reproducible bootable image distributions that meet customer demands for reliability and governance. Technologies/skills demonstrated: frontend wizard enhancements, REST API design and integration with external CRC data, backend data modeling for bootc distributions, and improved filtering and immutable distribution handling.

February 2026

1 Commits

Feb 1, 2026

February 2026 (2026-02) focused on a targeted bug fix in the osbuild/image-builder-frontend to improve RHEL distribution identification accuracy. The team aligned the getHostDistroName function with isRhel checks, correcting detection for RHEL distributions (e.g., RHEL 10) as addressed in the commit 6d5a914977d80211c81508b8f314b7b9d87c5c40. This involved refactoring the Wizard logic to ensure the distro name returned is compatible with the key-based isRhel mapping, enhancing reliability of host distro detection in the UI. The fix reduces misclassification risk, improving automation, configuration accuracy, and deployment workflows for RHEL-based hosts. Skills demonstrated include frontend refactoring, JavaScript/TypeScript maintenance, and careful mapping between human-friendly names and internal keys to deliver clear business value.

January 2026

7 Commits • 3 Features

Jan 1, 2026

Monthly summary for 2026-01 covering the osbuild/image-builder-frontend work, focusing on delivering practical UX improvements, onboarding workflow refinements, and context-aware documentation links that increase user efficiency and reduce support queries.

December 2025

3 Commits • 2 Features

Dec 1, 2025

December 2025 — Osbuild Image Builder Frontend: UX and localization improvements delivering business value through clearer guidance, reduced configuration errors, and robust i18n handling.

November 2025

6 Commits • 3 Features

Nov 1, 2025

November 2025: Osbuild image-builder-frontend delivered key enhancements in the Compliance Wizard and image creation flow, with focused fixes to policy loading and UI behavior, delivering stronger business value through improved accuracy, test stability, and maintainability.

October 2025

5 Commits • 3 Features

Oct 1, 2025

October 2025 summary for osbuild/image-builder-frontend: Delivered automation, testing, and UI/compliance improvements that directly enhance business value and product reliability. Key outcomes include automated Jira task creation with Epic linkage for issues opened via PR Best Practices, a new Playwright-based end-to-end test coverage for the AAP registration flow, and a comprehensive compliance-focused revamp of the image builder wizard with enhanced policy handling, UI updates, and component abstraction. These changes reduce manual effort, improve issue traceability, increase test coverage, and provide a more secure, policy-driven user experience. Demonstrates strong automation, frontend architecture, and test-driven development skills.

September 2025

4 Commits • 2 Features

Sep 1, 2025

2025-09 Performance Summary for osbuild/image-builder-frontend: Delivered analytics and UI enhancements to the Image Builder Wizard, enabling better usage insights, improved user experience, and more reliable builds. Focused on two areas: analytics instrumentation and Firewall step validation. The work provides business value by reducing misconfigurations, clarifying product decisions through telemetry, and aligning UI with mocks.

August 2025

5 Commits • 3 Features

Aug 1, 2025

Monthly work summary for 2025-08 focusing on delivering user-centric frontend improvements for the image-builder frontend. Key features delivered include Wizard UX enhancements with navigation refactor and default language/timezone values for image creation, UI polish on blueprint cards to prevent text overflow, and a frontend notifications library upgrade to benefit from bug fixes and performance improvements. Together, these changes improve user flow, visual consistency, and frontend stability, contributing to faster image creation and reduced manual input.

July 2025

3 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary for osbuild/image-builder focused on delivering security, reliability, and configurability improvements to the Ansible Automation Platform (AAP) integration within the image customization workflow. The team delivered enhancements to AAP registration handling, centralized configuration, and blueprint security, with improved test coverage for blueprint import/export.

June 2025

6 Commits • 2 Features

Jun 1, 2025

June 2025 – osbuild/image-builder-frontend Key features delivered and bugs fixed: - Image Builder Wizard Improvements (feature): UI/UX enhancements and validation improvements in the image builder wizard. Implemented port format validation in the Firewall step, improved package selection conflict handling, refined user creation UX, and adjusted the display order of systemd services. Commits illustrating the changes include: 310f7a05cf69c076097a3214f336506bc5d43193, 981b62d7b00710e43b2d23b383bcac081224f87d, 90c2c65ebe32e46792325c4d8e905e5298dfbd74, 76320925a0d33a671ef5dc598adc4f0ea61d6c53. - Timezone Filtering Robustness Bug: Normalize whitespace (bug): Fixed whitespace normalization in timezone strings to improve search behavior in the wizard timezone filter. Commit: 3093310a6c98edea11e725ba853dbec1beecb8b4. - CreateImageWizard Components Restructure (feature): Internal refactor to organize CreateImageWizard step components into dedicated subfolders for easier maintenance and future enhancements. Commit: 2f034dffd8a3e28a9f25ef303bbff6d5e78e1d2e. Overall impact, business value, and accomplishments: - Improved user experience and accuracy when configuring image builds, reducing setup time and configuration errors. - Root-cause fixes and refactors that enhance maintainability and future velocity for feature work. - Demonstrated skills in frontend validation, UI/UX improvements, component architecture, and large-scale refactoring. Technologies/skills demonstrated: - JavaScript/TypeScript, React, UI/UX design, form validation, search optimization, code organization, and modular component architecture.

May 2025

8 Commits • 4 Features

May 1, 2025

May 2025 (2025-05) focused on UX improvements, data model alignment, and broadened test coverage for the Image Builder Wizard in osbuild/image-builder-frontend. Delivered substantial enhancements to compliance workflows, image creation UX, and user validation, paired with end-to-end tests to verify systemd services and filesystem customization steps.

April 2025

6 Commits • 4 Features

Apr 1, 2025

April 2025 monthly summary for osbuild/image-builder-frontend focused on delivering measurable UX improvements, analytics, UI refactor, and expanded test coverage that drive business value and reliability. Key achievements include implementing On-Premise Image Wizard Step Tracking to enable visibility into optional steps (step-oscap) for on-prem deployments while preserving step-register behavior in other environments; introducing Image Wizard Analytics with restricted analytics on-prem and standardized event naming for package recommendations to improve product insights without compromising data governance; performing a UI refactor of the Image Builder Wizard Compliance Step to align with updated mockups and simplify the display of compliance policies and OpenSCAP profiles; and adding Firewall Customization Feature Tests to strengthen QA coverage for addition/removal of ports, service toggles, validation, and blueprint import/export flows.”

March 2025

4 Commits • 2 Features

Mar 1, 2025

Concise monthly summary for 2025-03 focusing on business value and technical achievements for the osbuild/image-builder-frontend repository. Delivered UX improvements to the Image Wizard, fixed a critical race condition in activation key handling, and added analytics tracking to improve product insights. The work enhances user onboarding, reliability of the wizard flow, and data-driven decision making.

Activity

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Quality Metrics

Correctness89.6%
Maintainability88.0%
Architecture84.8%
Performance86.6%
AI Usage25.0%

Skills & Technologies

Programming Languages

BashGoJavaScriptReactTypeScriptYAMLtsx

Technical Skills

API DesignAPI DevelopmentAPI designAPI developmentAPI integrationAnalytics ImplementationAnalytics IntegrationAnalytics TrackingAnsible Automation PlatformBackend DevelopmentCI/CDCode OrganizationConfiguration ManagementDependency ManagementDevOps

Repositories Contributed To

2 repos

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

osbuild/image-builder-frontend

Mar 2025 Mar 2026
12 Months active

Languages Used

JavaScriptTypeScripttsxReactYAML

Technical Skills

Analytics IntegrationFront End DevelopmentFrontend DevelopmentReactTypeScriptAnalytics Implementation

osbuild/image-builder

Jul 2025 Apr 2026
3 Months active

Languages Used

BashGo

Technical Skills

API DesignAPI DevelopmentBackend DevelopmentConfiguration ManagementGoGo Programming