Terafina | 2,714 followers on LinkedIn. Terafina is a software-as-a-service product company providing digital account opening services on a single platform that seamlessly unifies the experience across the online, branch and call center channels for mid market community banks and credit unions. Its unique approach from the start has been to underpin a modern digital account opening solution with a comprehensive sales platform. This combination allows its customers to bring branches and call centers into the digital account opening process whereby digital leads can be initiated in one channel and seamlessly followed through and completed on another channel.