Over a two-month period, this developer enhanced security and configurability across multiple WSO2 repositories, focusing on OAuth2 and Open Banking integrations. In wso2-extensions/identity-inbound-auth-oauth, they implemented ES256 and RS384 JWS algorithm support for OAuth token handling using Java, adding robust unit tests to ensure correct cryptographic mappings. They also upgraded dependencies and improved test reliability in wso2/product-is. Later, in wso2/reference-implementation-consumerdatastandards-au, they enabled client-controlled authorization response signing and enforced a PS256-only policy through TOML configuration, strengthening compliance for Open Banking. Their work demonstrates depth in backend development, cryptography, and configuration management.