During December 2024, contributed backend development work to the laurent22/joplin repository by implementing LDAP TLS CA File support for LDAP authentication. This feature introduced a new configuration option, LDAP_TLS_CA_FILE, enabling the use of self-signed or custom TLS certificates to enhance security and deployment flexibility for enterprise environments. The work involved updating environment variable definitions, refining configuration parsing, and modifying the LDAP login utility to accept a CA file path. Utilizing Node.js, JavaScript, and TypeScript, the changes streamlined LDAP integration and improved security configuration, addressing common friction points in deploying LDAP-backed authentication for Joplin server installations.