gandalan/idas-client-libs
Sep 2025 – Jun 2026
8 Months active
Languages Used
C#
Technical Skills
API DevelopmentAPI IntegrationBackend DevelopmentCode RefactoringData Transfer Objects (DTOs)Interface Design
Konstantin Haupt
PROFILE
Konstantin Haupt
Over eight months, contributed to gandalan/idas-client-libs by building and enhancing backend features focused on API reliability, data modeling, and invoicing compliance. Developed robust API integrations and client libraries in C#, emphasizing maintainability through code refactoring, DTO design, and clear documentation. Introduced rate limiting, multi-tenant support, and opt-in endpoint configuration to improve scalability and deployment flexibility. Enhanced data handling for invoicing by aligning with ZUGFeRD standards and refining error handling and concurrency management. Addressed both feature delivery and bug fixes, demonstrating depth in backend development, API design, and interface management while ensuring forward compatibility and stable client integration experiences.
Overall Statistics
Feature vs Bugs
85%Features
Repository Contributions
32Total
Bugs
2
Commits
32
Features
11
Lines of code
3,067
Activity Months8
Your Network
19 peopleSame Organization
@gandalan.de6
Shared Repositories
13
Work History
June 2026
1 Commits • 1 Features
Jun 1, 2026June 2026 monthly summary for gandalan/idas-client-libs focused on enabling ZUGFeRD compliant invoicing through a targeted DTO refactor and supporting web routines, aligning data handling with international invoicing standards and improving routing reliability.
1 Commits • 1 Features
Jun 1, 2026June 2026 monthly summary for gandalan/idas-client-libs focused on enabling ZUGFeRD compliant invoicing through a targeted DTO refactor and supporting web routines, aligning data handling with international invoicing standards and improving routing reliability.
June 2026
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026 monthly summary for gandalan/idas-client-libs. This period focused on data modeling improvements and API usability enhancements to support invoicing and logistics workflows. Delivered two notable features with strong forward compatibility and traceability; no critical defects fixed this period. Overall impact includes clearer data types for invoicing, safer file retrieval contracts, and improved client integration experience. Demonstrated capabilities include API design, enum modeling, and ReadOnlyList usage in contract definitions.
March 2026
2 Commits • 2 Features
Mar 1, 2026March 2026 monthly summary for gandalan/idas-client-libs. This period focused on data modeling improvements and API usability enhancements to support invoicing and logistics workflows. Delivered two notable features with strong forward compatibility and traceability; no critical defects fixed this period. Overall impact includes clearer data types for invoicing, safer file retrieval contracts, and improved client integration experience. Demonstrated capabilities include API design, enum modeling, and ReadOnlyList usage in contract definitions.
February 2026
10 Commits • 2 Features
Feb 1, 2026February 2026 monthly summary for gandalan/idas-client-libs focusing on reliability, scalability, and maintainability improvements through rate limiting, error handling, and multi-tenant support.
10 Commits • 2 Features
Feb 1, 2026February 2026 monthly summary for gandalan/idas-client-libs focusing on reliability, scalability, and maintainability improvements through rate limiting, error handling, and multi-tenant support.
February 2026
January 2026
4 Commits • 1 Features
Jan 1, 2026January 2026: API reliability and consistency improvements for Gandalan/idas-client-libs. Delivered rate-limiting resilience, unified header validation across request methods, and URI handling consistency, with accompanying developer documentation. These changes reduce transient failures and improve developer experience when integrating with the IDAS API.
January 2026
4 Commits • 1 Features
Jan 1, 2026January 2026: API reliability and consistency improvements for Gandalan/idas-client-libs. Delivered rate-limiting resilience, unified header validation across request methods, and URI handling consistency, with accompanying developer documentation. These changes reduce transient failures and improve developer experience when integrating with the IDAS API.
December 2025
4 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for gandalan/idas-client-libs focused on delivering a centralized API endpoint configuration and opt-in validation feature for the new backend API. The work emphasizes business value by enabling dynamic endpoint behavior, reducing integration risk, and accelerating backend migrations. No major bug fixes were required this month; the emphasis was on robust feature delivery, code quality, and clear documentation. Demonstrated strong skill in .NET API design, configuration management, and maintainability improvements, along with disciplined commit hygiene.
4 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for gandalan/idas-client-libs focused on delivering a centralized API endpoint configuration and opt-in validation feature for the new backend API. The work emphasizes business value by enabling dynamic endpoint behavior, reducing integration risk, and accelerating backend migrations. No major bug fixes were required this month; the emphasis was on robust feature delivery, code quality, and clear documentation. Demonstrated strong skill in .NET API design, configuration management, and maintainability improvements, along with disciplined commit hygiene.
December 2025
November 2025
3 Commits • 1 Features
Nov 1, 2025November 2025 summary for gandalan/idas-client-libs focused on API client reliability and deployment consistency. Delivered a new API capability to retrieve additional properties by introducing includeAdditionalProperties across multiple methods, and fixed URL construction to ensure correct API requests. Standardized the staging environment naming to prevent deployment confusion. These changes enhance data completeness in API responses, improve reliability of client calls, and reduce environment-related errors in CI/CD workflows.
November 2025
3 Commits • 1 Features
Nov 1, 2025November 2025 summary for gandalan/idas-client-libs focused on API client reliability and deployment consistency. Delivered a new API capability to retrieve additional properties by introducing includeAdditionalProperties across multiple methods, and fixed URL construction to ensure correct API requests. Standardized the staging environment naming to prevent deployment confusion. These changes enhance data completeness in API responses, improve reliability of client calls, and reduce environment-related errors in CI/CD workflows.
October 2025
4 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for gandalan/idas-client-libs: Implemented settings categorization to improve organization, UI consistency, and startup reliability. Introduced SettingsCategory enum and Category property on ISettingsModul, reorganized enum order for UI presentation, and fixed a potential null reference by initializing ApplicationSpecificProperties before use. These changes were implemented via targeted commits and enhance configurability, UX, and stability.
4 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary for gandalan/idas-client-libs: Implemented settings categorization to improve organization, UI consistency, and startup reliability. Introduced SettingsCategory enum and Category property on ISettingsModul, reorganized enum order for UI presentation, and fixed a potential null reference by initializing ApplicationSpecificProperties before use. These changes were implemented via targeted commits and enhance configurability, UX, and stability.
October 2025
September 2025
4 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for gandalan/idas-client-libs. Key focus areas were delivering bulk operation capabilities, hardening the DTO/data-model layer, and improving API integration for reliable bulk management of delivery commitments.
September 2025
4 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for gandalan/idas-client-libs. Key focus areas were delivering bulk operation capabilities, hardening the DTO/data-model layer, and improving API integration for reliable bulk management of delivery commitments.
Activity
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Quality Metrics
Correctness91.6%
Maintainability90.4%
Architecture89.8%
Performance90.0%
AI Usage22.6%
Skills & Technologies
Programming Languages
C#
Technical Skills
API Client DevelopmentAPI DevelopmentAPI IntegrationAPI designAPI developmentAPI integrationBackend DevelopmentC#C# ProgrammingC# programmingCode RefactoringConcurrency ManagementDTO designData Transfer Objects (DTOs)Documentation
Repositories Contributed To
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