A Kohana Framework developer designs, develops, and maintains web applications using Kohana, a PHP framework. They leverage Kohana's features like HMVC architectural pattern, routing, modules, and authentication to create secure, efficient, and reusable web applications. They also manage databases, troubleshoot and fix bugs, and ensure that the applications are in compliance with the latest web standards. Additionally, they collaborate with other team members and stakeholders, translating their requirements into functional code. Kohana developers also conduct testing to ensure optimal performance and user experience, while constantly updating their skills to stay abreast of evolving web technologies.