During April 2026, this developer enhanced the nerves_hub_web repository by implementing self-signed database certificate verification to support DBaaS environments that rely on self-signed certificates. The solution introduced an environment-driven toggle, DATABASE_CERT_SELF_SIGNED, which, when enabled, bypasses standard SSL peer verification and applies a custom function to pin the provided PEM certificate directly to the database. This approach streamlines secure connections in scenarios where traditional certificate authorities are not used, reducing deployment friction. The work demonstrated expertise in backend development, security, and Elixir, with a focus on TLS configuration and environment-based behavior, while prioritizing robust, secure-by-default engineering practices.