FOSSBilling/FOSSBilling
Feb 2025 – Feb 2026
11 Months active
Languages Used
TwigPHPSVGCSSHTMLJavaScriptSQLhtml
Technical Skills
Front End DevelopmentAPI DevelopmentAsset ManagementBackend DevelopmentCode RefactoringData Validation
Yağızhan
PROFILE
Yağızhan
Yagizhan Yilmaz contributed to the FOSSBilling/FOSSBilling repository by delivering a range of features and stability improvements across both front-end and back-end systems. Over 11 months, he built modular UI components, enhanced API endpoints, and migrated core modules to Doctrine ORM for maintainability. His work included implementing a dynamic widget system, refining invoice and hosting workflows, and improving security through XSS sanitization and robust error handling. Using PHP, JavaScript, and Twig, Yagizhan focused on code quality, extensibility, and user experience. His engineering approach emphasized modular architecture, clear documentation, and incremental refactoring, resulting in a more reliable and scalable platform.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
55Total
Bugs
15
Commits
55
Features
30
Lines of code
24,199
Activity Months11
Your Network
7 people
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) Performance summary for FOSSBilling/FOSSBilling focusing on delivery of modular UI capabilities and stability of the platform. Key highlights: - Widget System for Dynamic Content Rendering delivered, enabling modules to register widgets for dynamic content rendering in designated slots. Includes Widgets module, rendering logic, and robust error handling for widget rendering failures. - No major bugs fixed this month; attention focused on delivering a robust feature with clean integration points and extensible architecture. Overall impact and accomplishments: - Enhanced UI extensibility and modularity, enabling faster and safer addition of dynamic UI components across modules. - Improved resilience by isolating widget rendering with dedicated error handling, reducing risk of full-page failures due to widget issues. - Laid groundwork for a reusable widget ecosystem to accelerate future feature delivery and consistency across the product. Technologies/skills demonstrated: - Modular architecture and extension points for widgets, rendering pipeline, and error handling patterns. - Commit-driven delivery and incremental feature integration (example commit 19120d5a1972858cd01924b2f1d05f44bbdced69 - Introducing widgets (#2853)).
1 Commits • 1 Features
Feb 1, 2026February 2026 (2026-02) Performance summary for FOSSBilling/FOSSBilling focusing on delivery of modular UI capabilities and stability of the platform. Key highlights: - Widget System for Dynamic Content Rendering delivered, enabling modules to register widgets for dynamic content rendering in designated slots. Includes Widgets module, rendering logic, and robust error handling for widget rendering failures. - No major bugs fixed this month; attention focused on delivering a robust feature with clean integration points and extensible architecture. Overall impact and accomplishments: - Enhanced UI extensibility and modularity, enabling faster and safer addition of dynamic UI components across modules. - Improved resilience by isolating widget rendering with dedicated error handling, reducing risk of full-page failures due to widget issues. - Laid groundwork for a reusable widget ecosystem to accelerate future feature delivery and consistency across the product. Technologies/skills demonstrated: - Modular architecture and extension points for widgets, rendering pipeline, and error handling patterns. - Commit-driven delivery and incremental feature integration (example commit 19120d5a1972858cd01924b2f1d05f44bbdced69 - Introducing widgets (#2853)).
February 2026
January 2026
7 Commits • 4 Features
Jan 1, 2026Month: 2026-01. Key Features Delivered: - Domain Options Control for Hosting Products: UI improvements and safeguards to ensure at least one domain option is enabled. Commit: a443307d8a3965aaa5e3caeac4d6b00cc42c0cf6. - Branding Update: Heart Icon added to Branding module to improve visual engagement. Commit: 07423d6eee6294c9a79d0a20d86c67cf90cddc9d. - Collapse UI Component Integration (Huraga Theme): Bootstrap Collapse added for cleaner UI and content organization. Commit: 446ffbd955c37079bced07f28becdc4cd7ffe8a1. - AGENTS.md Note: Added ddev usage guidance for PHP configuration when PHP is not installed. Commit: 5a6519dd3ce6afee95fa9b8d6d341755ec329ac9. Major Bugs Fixed: - Email Settings UX and Deprecated Config Handling: fixes proper toggling between input boxes and updates deprecated configuration calls to improve user experience in email settings management. Commit: 9ce7ffe4bd5f2f0e0dbed060cc08a1fee5de6b92. - Extension Management Activation Button and Settings: restores activation button and ensures settings buttons are available to enhance interaction in the extension management interface. Commit: b03ceaca563628c87f2c66586f56ed427a4719d1. - Null Refund Handling in Base Currency Conversion: implements null handling for refunds during base currency conversion to prevent errors in invoice processing. Commit: e12280c10fb769c7bc0a9881780ae89ae13c5904. Overall Impact and Accomplishments: Improved admin UX, safer domain/product configuration, stronger branding, and UI cleanliness, contributing to reduced support friction and more reliable billing workflows. Technologies/Skills Demonstrated: UI/UX improvements, Bootstrap components integration, PHP configuration guidance (ddev), currency handling, and configuration deprecation updates.
January 2026
7 Commits • 4 Features
Jan 1, 2026Month: 2026-01. Key Features Delivered: - Domain Options Control for Hosting Products: UI improvements and safeguards to ensure at least one domain option is enabled. Commit: a443307d8a3965aaa5e3caeac4d6b00cc42c0cf6. - Branding Update: Heart Icon added to Branding module to improve visual engagement. Commit: 07423d6eee6294c9a79d0a20d86c67cf90cddc9d. - Collapse UI Component Integration (Huraga Theme): Bootstrap Collapse added for cleaner UI and content organization. Commit: 446ffbd955c37079bced07f28becdc4cd7ffe8a1. - AGENTS.md Note: Added ddev usage guidance for PHP configuration when PHP is not installed. Commit: 5a6519dd3ce6afee95fa9b8d6d341755ec329ac9. Major Bugs Fixed: - Email Settings UX and Deprecated Config Handling: fixes proper toggling between input boxes and updates deprecated configuration calls to improve user experience in email settings management. Commit: 9ce7ffe4bd5f2f0e0dbed060cc08a1fee5de6b92. - Extension Management Activation Button and Settings: restores activation button and ensures settings buttons are available to enhance interaction in the extension management interface. Commit: b03ceaca563628c87f2c66586f56ed427a4719d1. - Null Refund Handling in Base Currency Conversion: implements null handling for refunds during base currency conversion to prevent errors in invoice processing. Commit: e12280c10fb769c7bc0a9881780ae89ae13c5904. Overall Impact and Accomplishments: Improved admin UX, safer domain/product configuration, stronger branding, and UI cleanliness, contributing to reduced support friction and more reliable billing workflows. Technologies/Skills Demonstrated: UI/UX improvements, Bootstrap components integration, PHP configuration guidance (ddev), currency handling, and configuration deprecation updates.
December 2025
9 Commits • 5 Features
Dec 1, 2025December 2025 monthly summary for FOSSBilling: Consolidated security and robustness improvements, major feature deliveries, and architectural enhancements. Delivered hardened security controls, UI improvements for email previews, ORM migration for core modules, richer invoicing communications, and a comprehensive module system overhaul. These efforts reduce security risk, improve maintainability, and enhance user-facing clarity and scalability.
9 Commits • 5 Features
Dec 1, 2025December 2025 monthly summary for FOSSBilling: Consolidated security and robustness improvements, major feature deliveries, and architectural enhancements. Delivered hardened security controls, UI improvements for email previews, ORM migration for core modules, richer invoicing communications, and a comprehensive module system overhaul. These efforts reduce security risk, improve maintainability, and enhance user-facing clarity and scalability.
December 2025
November 2025
4 Commits • 3 Features
Nov 1, 2025Monthly work summary for 2025-11 focusing on delivering stable features, improving security/compliance, enhancing user guidance, and modernizing the testing framework within the FOSSBilling/FOSSBilling repository.
November 2025
4 Commits • 3 Features
Nov 1, 2025Monthly work summary for 2025-11 focusing on delivering stable features, improving security/compliance, enhancing user guidance, and modernizing the testing framework within the FOSSBilling/FOSSBilling repository.
October 2025
8 Commits • 7 Features
Oct 1, 2025Month 2025-10 summary for FOSSBilling/FOSSBilling focusing on delivering business value through data-driven migrations, developer experience improvements, performance optimizations, and robust administration features. Key shifts include migrating modules to Doctrine ORM, consolidating debugging and observability, and enhancing invoice compliance, while maintaining stable operations through targeted fixes and UI refinements.
8 Commits • 7 Features
Oct 1, 2025Month 2025-10 summary for FOSSBilling/FOSSBilling focusing on delivering business value through data-driven migrations, developer experience improvements, performance optimizations, and robust administration features. Key shifts include migrating modules to Doctrine ORM, consolidating debugging and observability, and enhancing invoice compliance, while maintaining stable operations through targeted fixes and UI refinements.
October 2025
September 2025
14 Commits • 3 Features
Sep 1, 2025September 2025 highlights for FOSSBilling/FOSSBilling focused on data correctness, security, UX improvements, and maintainability. Delivered critical hosting data correctness fixes, enhanced invoice filtering and security controls, and refreshed the new client onboarding flow. Implemented centralized CSRF token handling and improved network-related data loading, IP retrieval, and code quality in payment modules. Upgraded dependencies and improved reliability across extensions and UUID generation, contributing to a stronger foundation for future automation and scale.
September 2025
14 Commits • 3 Features
Sep 1, 2025September 2025 highlights for FOSSBilling/FOSSBilling focused on data correctness, security, UX improvements, and maintainability. Delivered critical hosting data correctness fixes, enhanced invoice filtering and security controls, and refreshed the new client onboarding flow. Implemented centralized CSRF token handling and improved network-related data loading, IP retrieval, and code quality in payment modules. Upgraded dependencies and improved reliability across extensions and UUID generation, contributing to a stronger foundation for future automation and scale.
August 2025
1 Commits • 1 Features
Aug 1, 2025Monthly summary (2025-08): Delivered a UI enhancement in FOSSBilling by adding an Enabled Modules accordion to the About tab, listing active modules with names, versions, and status. This improves visibility of current capabilities, speeding onboarding and troubleshooting for admins and support. No major bugs fixed this month for the FOSSBilling repo; focus remained on maintenance and small refinements. Technologies/skills demonstrated include UI/UX refinement, disciplined version control, and clear change traceability.
1 Commits • 1 Features
Aug 1, 2025Monthly summary (2025-08): Delivered a UI enhancement in FOSSBilling by adding an Enabled Modules accordion to the About tab, listing active modules with names, versions, and status. This improves visibility of current capabilities, speeding onboarding and troubleshooting for admins and support. No major bugs fixed this month for the FOSSBilling repo; focus remained on maintenance and small refinements. Technologies/skills demonstrated include UI/UX refinement, disciplined version control, and clear change traceability.
August 2025
June 2025
2 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary — FOSSBilling/FOSSBilling: Key feature delivery and refactor effort driving business value Key features delivered: - Pagination System Upgrade: Introduced new FOSSBilling\Pagination class, deprecated Box_Pagination, updated modules to use the new class, and improved pagination logic and type safety in Twig templates. Commit: f2bb4179d2f5a8f5adee4936952746c6f88d8e9b. - Internationalization and Global Accessibility Improvements: Wrapped static strings with translation functions across modules to enable proper translation of user-facing text and improve global accessibility. Commit: 00b3b97f66f5a9e37be8fbf1f2cf8a97a2869261. Major bugs fixed: - No standalone bug fixes documented for this month; changes are refactor-oriented, delivering stability improvements through pagination modernization and translation readiness. Overall impact and accomplishments: - Improves user experience with consistent pagination across modules and prepares the codebase for multilingual deployments. - Reduces maintenance costs by consolidating pagination logic and enabling centralized translation handling. - Sets foundation for future features that depend on reliable, type-safe pagination and localization. Technologies/skills demonstrated: - PHP OOP and new class design (FOSSBilling\Pagination) - Backward-compatibility and deprecation strategy (Box_Pagination) - Twig template enhancements with improved type safety - Localization/internationalization best practices and translation readiness - Cross-module refactoring and commit-driven development
June 2025
2 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary — FOSSBilling/FOSSBilling: Key feature delivery and refactor effort driving business value Key features delivered: - Pagination System Upgrade: Introduced new FOSSBilling\Pagination class, deprecated Box_Pagination, updated modules to use the new class, and improved pagination logic and type safety in Twig templates. Commit: f2bb4179d2f5a8f5adee4936952746c6f88d8e9b. - Internationalization and Global Accessibility Improvements: Wrapped static strings with translation functions across modules to enable proper translation of user-facing text and improve global accessibility. Commit: 00b3b97f66f5a9e37be8fbf1f2cf8a97a2869261. Major bugs fixed: - No standalone bug fixes documented for this month; changes are refactor-oriented, delivering stability improvements through pagination modernization and translation readiness. Overall impact and accomplishments: - Improves user experience with consistent pagination across modules and prepares the codebase for multilingual deployments. - Reduces maintenance costs by consolidating pagination logic and enabling centralized translation handling. - Sets foundation for future features that depend on reliable, type-safe pagination and localization. Technologies/skills demonstrated: - PHP OOP and new class design (FOSSBilling\Pagination) - Backward-compatibility and deprecation strategy (Box_Pagination) - Twig template enhancements with improved type safety - Localization/internationalization best practices and translation readiness - Cross-module refactoring and commit-driven development
May 2025
7 Commits • 3 Features
May 1, 2025May 2025 achieved a cohesive admin UI refresh, robust data presentation enhancements, and expanded hosting API capabilities, driving clearer data, stronger branding, and better integration points. Key features delivered include UI/UX modernization and branding updates across the admin UI; data presentation and IP address handling improvements; and hosting accounts API enhancements with pagination and tests. Major bugs fixed include branding-related UI gaps (company logo on staff login) and data display issues (bank information in footers), with improved API error visibility for ACL checks. Overall impact: improved admin usability, data clarity, and reliability of hosting-related workflows, enabling faster decision-making and smoother integrations. Technologies/skills demonstrated: frontend UI/UX refinements, data formatting utilities, IP processing, REST API design with pagination, ACL-based error handling, and test coverage.
7 Commits • 3 Features
May 1, 2025May 2025 achieved a cohesive admin UI refresh, robust data presentation enhancements, and expanded hosting API capabilities, driving clearer data, stronger branding, and better integration points. Key features delivered include UI/UX modernization and branding updates across the admin UI; data presentation and IP address handling improvements; and hosting accounts API enhancements with pagination and tests. Major bugs fixed include branding-related UI gaps (company logo on staff login) and data display issues (bank information in footers), with improved API error visibility for ACL checks. Overall impact: improved admin usability, data clarity, and reliability of hosting-related workflows, enabling faster decision-making and smoother integrations. Technologies/skills demonstrated: frontend UI/UX refinements, data formatting utilities, IP processing, REST API design with pagination, ACL-based error handling, and test coverage.
May 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 - FOSSBilling: System Settings Page Enhancements delivered to improve UX and documentation accessibility. Implemented a help link adjacent to the Instance ID label linking to FOSSBilling documentation and ensured the license link opens in a new tab, enhancing discoverability and preventing navigation disruption. No major bugs fixed documented for this period in the provided data. Overall impact: smoother user onboarding, better alignment with documentation, and improved maintainability. Technologies/skills demonstrated: frontend UX refinement, in-code documentation references, and clear commit hygiene with traceable changes.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 - FOSSBilling: System Settings Page Enhancements delivered to improve UX and documentation accessibility. Implemented a help link adjacent to the Instance ID label linking to FOSSBilling documentation and ensured the license link opens in a new tab, enhancing discoverability and preventing navigation disruption. No major bugs fixed documented for this period in the provided data. Overall impact: smoother user onboarding, better alignment with documentation, and improved maintainability. Technologies/skills demonstrated: frontend UX refinement, in-code documentation references, and clear commit hygiene with traceable changes.
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for FOSSBilling/FOSSBilling: Delivered a targeted UI improvement and fixed a visual presentation bug in the support tickets view. The change applies bg-transparent to support ticket messages to remove an unintended background, ensuring content is displayed correctly and improving readability. The fix, tracked under issue #2597, was implemented in commit bb85d517f59bd825df95be6b16a4636d24563cda and validated across the ticket UI. This work enhances user experience for both agents and customers and contributes to a more consistent design language. Technologies demonstrated include CSS/UI templating, Git-based change management, and issue-tracking integration.
1 Commits
Feb 1, 2025February 2025 monthly summary for FOSSBilling/FOSSBilling: Delivered a targeted UI improvement and fixed a visual presentation bug in the support tickets view. The change applies bg-transparent to support ticket messages to remove an unintended background, ensuring content is displayed correctly and improving readability. The fix, tracked under issue #2597, was implemented in commit bb85d517f59bd825df95be6b16a4636d24563cda and validated across the ticket UI. This work enhances user experience for both agents and customers and contributes to a more consistent design language. Technologies demonstrated include CSS/UI templating, Git-based change management, and issue-tracking integration.
February 2025
Activity
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Quality Metrics
Correctness89.8%
Maintainability87.4%
Architecture86.0%
Performance85.0%
AI Usage35.4%
Skills & Technologies
Programming Languages
CSSHTMLJavaScriptMarkdownPHPSQLSVGSassTwightml
Technical Skills
API DevelopmentAPI IntegrationAPI developmentAPI integrationAsset ManagementBack-end DevelopmentBackend DevelopmentCSSCachingCode Quality ImprovementCode RefactoringCommand Line InterfaceCypressData ValidationDatabase
Repositories Contributed To
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