A Lotus Script developer designs, tests, deploys, and maintains applications for IBM's Lotus Notes software. They write Lotus Script codes to automate tasks, manage data, and interact with users or other systems. They ensure the applications meet user requirements and adhere to software development standards. They also debug and troubleshoot applications to resolve issues and enhance performance. Additionally, they might provide technical support, train users, and document their work. Their role requires a good understanding of Lotus Script, JavaScript, HTML, and XML, as well as strong problem-solving skills and attention to detail.