walt-id/waltid-identity
Apr 2026 – Apr 2026
1 Month active
Languages Used
Kotlin
Technical Skills
KotlinUnit Testingbackend developmentunit testing
Andy Xiang
PROFILE
Andy Xiang
Worked on backend stability and reliability for the waltid-identity repositories, focusing on bug fixes and validation improvements rather than new feature development. Addressed startup validation issues by aligning certificate validity checks in the OpenAPI example, reducing onboarding failures and minimizing post-deployment incidents. Enhanced the PresentationDefinitionParser to correctly handle optional fields in constraint evaluation, ensuring compliance with DIF Presentation Exchange v2.0.0. Improved code maintainability by removing unused imports and clarifying test documentation. Utilized Kotlin, API development, and unit testing to deliver targeted solutions that strengthened onboarding flows and improved code quality, supporting long-term maintainability and operational reliability.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
3Total
Bugs
3
Commits
3
Features
0
Lines of code
189
Activity Months2
Your Network
30 peopleShared Repositories
30
SuperBatataMember
Severin StamplerMember
mikeploteanMember
Philipp PotiskMember
Harald OkornMember
chsavvaidisMember
cpatsonakisMember
DinkarMember
KBurgmannMember
Work History
April 2026
2 Commits
Apr 1, 20262026-04 Monthly Summary for walt-id/waltid-identity. Focused on correctness, reliability, and maintainability of the PresentationDefinitionParser and surrounding test/docs; no new features delivered this month, but substantial quality improvements with clear business value. - Bug fixes and alignment with DIF: PresentationDefinitionParser now correctly handles optional fields in constraint evaluation for unresolved paths, per DIF Presentation Exchange v2.0.0. Commit: d4455a5144d763e992e2c3e2758b85d2d7e81625. - Code quality and documentation: Removed unused imports and corrected a reference in test documentation to improve clarity and maintainability. Commit: 912914f01e398384e61d38613c5fe1b3e95006c1.
2 Commits
Apr 1, 20262026-04 Monthly Summary for walt-id/waltid-identity. Focused on correctness, reliability, and maintainability of the PresentationDefinitionParser and surrounding test/docs; no new features delivered this month, but substantial quality improvements with clear business value. - Bug fixes and alignment with DIF: PresentationDefinitionParser now correctly handles optional fields in constraint evaluation for unresolved paths, per DIF Presentation Exchange v2.0.0. Commit: d4455a5144d763e992e2c3e2758b85d2d7e81625. - Code quality and documentation: Removed unused imports and corrected a reference in test documentation to improve clarity and maintainability. Commit: 912914f01e398384e61d38613c5fe1b3e95006c1.
April 2026
January 2026
1 Commits
Jan 1, 2026January 2026 monthly wrap-up for Orange-OpenSource/waltid-identity. Focused on stabilizing startup validation by aligning certificate validity checks in the OpenAPI example, preventing startup-time validation failures, and reinforcing cross-certificate validation integrity. Delivered a targeted fix addressing IACA.notBefore vs DS.notBefore to satisfy DocumentSignerOnboardingRequest validation after 2026-01-01. This reduces startup risk, improves reliability for onboarding flows, and minimizes post-deployment incidents.
January 2026
1 Commits
Jan 1, 2026January 2026 monthly wrap-up for Orange-OpenSource/waltid-identity. Focused on stabilizing startup validation by aligning certificate validity checks in the OpenAPI example, preventing startup-time validation failures, and reinforcing cross-certificate validation integrity. Delivered a targeted fix addressing IACA.notBefore vs DS.notBefore to satisfy DocumentSignerOnboardingRequest validation after 2026-01-01. This reduces startup risk, improves reliability for onboarding flows, and minimizes post-deployment incidents.
Activity
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Quality Metrics
Correctness100.0%
Maintainability93.4%
Architecture93.4%
Performance93.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
Kotlin
Technical Skills
API developmentKotlinUnit Testingbackend developmentunit testing
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
Orange-OpenSource/waltid-identity
Jan 2026 – Jan 2026
1 Month active
Languages Used
Kotlin
Technical Skills
API developmentKotlinbackend development