An Atlas.ti developer works on the Atlas.ti software, a qualitative data analysis tool. They may design, code, and debug applications, enhancing the software’s functionality and user experience. Their responsibilities include understanding user requirements, creating software solutions, and testing and troubleshooting the software to ensure smooth operation. They might also develop new features, improve the software's performance, and fix bugs. Developers must stay updated on new technologies and methodologies to improve the software. They also work closely with other team members and stakeholders, ensuring the software meets its objectives and adheres to quality standards.