Worked on the envoyproxy/envoy repository to deliver Dynamic Modules SSL Attribute Expansion, enabling dynamic modules to access and expose detailed TLS connection metadata such as TLS version, certificate details, and Subject Alternative Names. This feature required updates to the ABI and the addition of new getters in the filter callback, allowing for more granular inspection and policy-driven control of SSL connections. The work focused on enhancing observability and security policy flexibility for TLS traffic. Implementation involved C++ and C, with an emphasis on API design, dynamic module architecture, and robust handling of SSL/TLS metadata within network programming contexts.