A Behaviour Driven Development (BDD) developer uses a software development process that promotes collaboration between developers, QA and non-technical participants in a software project. The developer writes code based on user behavior from the software's perspective. They use simple, domain-specific scripting language to create executable specifications. They focus on where to start the story, how to write a good scenario and how to automate them. The developer uses BDD principles to ensure that the developed feature meets business expectations and can be understood by all stakeholders, fostering better communication, fewer misunderstandings, faster development cycles, and higher customer satisfaction.