walt-id/waltid-identity
Jun 2025 – Oct 2025
5 Months active
Languages Used
JavaKotlinGradleHOCONShellYAMLenvJSON
Technical Skills
API DesignAPI DevelopmentBackend DevelopmentJavaKotlinOpenAPI
Harald Okorn
PROFILE
Harald Okorn
Harald contributed to the walt-id/waltid-identity repository by engineering robust API and wallet management features, focusing on secure data isolation, reliable credential issuance, and streamlined build automation. He standardized OpenAPI metadata to improve Kotlin client generation, enhanced error handling for issuer APIs, and expanded integration test coverage using JUnit and Gradle. Harald addressed Android build dependency issues, migrated Docker image workflows to Gradle, and enabled Maven and NPM publishing for key libraries. His work on wallet and DID management, SD-JWT credential testing, and performance profiling demonstrated depth in Kotlin, Java, and Docker, resulting in more maintainable, secure, and developer-friendly identity services.
Overall Statistics
Feature vs Bugs
61%Features
Repository Contributions
70Total
Bugs
11
Commits
70
Features
17
Lines of code
25,402
Activity Months5
Your Network
25 people
Work History
October 2025
7 Commits • 2 Features
Oct 1, 2025Month: 2025-10 — Focused on strengthening data isolation, improving test reliability, and enhancing observability for wallet-related flows in waltid-identity. Delivered across three areas: 1) Features and bug fixes in Wallet VP flow: enforced account boundaries to fix cross-account data access, improving security and user data isolation. 2) Test suite improvements for credential issuance and wallet isolation: corrected test function typo and simplified credential-related DB query logic to increase test accuracy and reliability. 3) Performance instrumentation and logging: introduced a stopwatch-based profiler for credential matching, refined logging for wallet performance, and updated service/test log configuration; one performance test was disabled during the period to maintain stability.
7 Commits • 2 Features
Oct 1, 2025Month: 2025-10 — Focused on strengthening data isolation, improving test reliability, and enhancing observability for wallet-related flows in waltid-identity. Delivered across three areas: 1) Features and bug fixes in Wallet VP flow: enforced account boundaries to fix cross-account data access, improving security and user data isolation. 2) Test suite improvements for credential issuance and wallet isolation: corrected test function typo and simplified credential-related DB query logic to increase test accuracy and reliability. 3) Performance instrumentation and logging: introduced a stopwatch-based profiler for credential matching, refined logging for wallet performance, and updated service/test log configuration; one performance test was disabled during the period to maintain stability.
October 2025
September 2025
6 Commits • 3 Features
Sep 1, 2025September 2025 (walt-id/waltid-identity): Stabilized and modernized build and release processes, cleaned legacy code, and established publishing workflows to increase reliability, speed, and distribution readiness for identity components.
September 2025
6 Commits • 3 Features
Sep 1, 2025September 2025 (walt-id/waltid-identity): Stabilized and modernized build and release processes, cleaned legacy code, and established publishing workflows to increase reliability, speed, and distribution readiness for identity components.
August 2025
17 Commits • 4 Features
Aug 1, 2025During August 2025, the walt-id/waltid-identity project delivered notable enhancements to wallet and DID management, expanded SD-JWT credential testing coverage, and strengthened test infrastructure and CI stability. Key outcomes include deploying the WalletContainerApi to support multi-wallet workflows, ensuring default DID usage when none is provided, and refining exchange/controller logic to improve wallet usage. Expanded IETF SD-JWT issuance tests with new test classes, provider metadata support, and assertions to validate issuer/subject DIDs and selective disclosure. Refactored test framework to JUnit, introduced VerifierApi, standardized key assertions and default-key helpers, and ported mdoc tests into the main suite. CI/test infra improvements enable parallel test execution, disable unstable HTTPS cert checks in tests, and temporarily bypass problematic CI steps, resulting in faster feedback and higher reliability. Collectively, these changes reduce configuration errors, increase security and interoperability, and accelerate feature delivery with higher confidence.
17 Commits • 4 Features
Aug 1, 2025During August 2025, the walt-id/waltid-identity project delivered notable enhancements to wallet and DID management, expanded SD-JWT credential testing coverage, and strengthened test infrastructure and CI stability. Key outcomes include deploying the WalletContainerApi to support multi-wallet workflows, ensuring default DID usage when none is provided, and refining exchange/controller logic to improve wallet usage. Expanded IETF SD-JWT issuance tests with new test classes, provider metadata support, and assertions to validate issuer/subject DIDs and selective disclosure. Refactored test framework to JUnit, introduced VerifierApi, standardized key assertions and default-key helpers, and ported mdoc tests into the main suite. CI/test infra improvements enable parallel test execution, disable unstable HTTPS cert checks in tests, and temporarily bypass problematic CI steps, resulting in faster feedback and higher reliability. Collectively, these changes reduce configuration errors, increase security and interoperability, and accelerate feature delivery with higher confidence.
August 2025
July 2025
36 Commits • 7 Features
Jul 1, 2025July 2025 monthly summary for waltid-identity focusing on delivering business value through API reliability improvements, expanded test coverage, and tooling enhancements. The team prioritized clear client-facing error handling, OpenAPI accuracy, and robust integration testing to accelerate feedback loops and reduce post-deploy issues.
July 2025
36 Commits • 7 Features
Jul 1, 2025July 2025 monthly summary for waltid-identity focusing on delivering business value through API reliability improvements, expanded test coverage, and tooling enhancements. The team prioritized clear client-facing error handling, OpenAPI accuracy, and robust integration testing to accelerate feedback loops and reduce post-deploy issues.
June 2025
4 Commits • 1 Features
Jun 1, 2025Month: 2025-06 | walt-id/waltid-identity was focused on OpenAPI metadata improvements to enable Kotlin client generation across services (waltid-issuer-api, waltid-verifier-api, waltid-wallet-api) and ExchangeController.kt. Implemented refactors and fixes to standardize OpenAPI metadata, normalize path parameters, and refine response definitions, including correcting parameter descriptions and response typings to ensure accurate Kotlin client generation from Swagger. Four fixes were applied to api.json across services, enhancing API discoverability and client developer experience.
4 Commits • 1 Features
Jun 1, 2025Month: 2025-06 | walt-id/waltid-identity was focused on OpenAPI metadata improvements to enable Kotlin client generation across services (waltid-issuer-api, waltid-verifier-api, waltid-wallet-api) and ExchangeController.kt. Implemented refactors and fixes to standardize OpenAPI metadata, normalize path parameters, and refine response definitions, including correcting parameter descriptions and response typings to ensure accurate Kotlin client generation from Swagger. Four fixes were applied to api.json across services, enhancing API discoverability and client developer experience.
June 2025
Activity
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Quality Metrics
Correctness87.6%
Maintainability87.0%
Architecture81.2%
Performance77.4%
AI Usage20.6%
Skills & Technologies
Programming Languages
DockerfileGradleHOCONJSONJavaKotlinMarkdownShellTypeScriptYAML
Technical Skills
API Client DevelopmentAPI DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI TestingAndroid DevelopmentAssertion LibrariesBackend DevelopmentBuild AutomationBuild ConfigurationBuild Scripting (Gradle)Build System ManagementCI/CDCode Cleanup
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