A Crazyegg developer works on designing and developing software solutions to enhance user experience analytics. They work on the platform which visualizes user activity on a website such as clicks, scrolls, and mouse movements. Their tasks involve back-end coding, testing, debugging, and software integration. They also ensure the platform's usability and stability across different browsers and devices. They collaborate with UX researchers and data analysts to interpret user behavior data and transform it into actionable insights. They continuously innovate and improve the platform's features, ensuring it remains at the forefront of user experience analytics technology.