A Génie logiciel developer, also known as a software engineer, designs, develops, maintains, tests, and evaluates computer software. They apply engineering principles to create software solutions that meet the needs of businesses or individuals. They may be involved in the creation of various types of software, including operating systems, network control systems, middleware, and applications. Their work often includes coding, debugging, performing software analysis, and integrating new technologies. They may also participate in software modelling and simulation, as well as quality assurance. Their goal is to ensure that the software is efficient, effective, and user-friendly.