A Dart developer designs, builds, and maintains applications using Dart programming language. They often focus on creating fluid user interfaces for web, mobile, and desktop platforms, leveraging Dart's capabilities with frameworks like Flutter. Their responsibilities include writing clean, testable, and efficient code, debugging to optimize performance, and ensuring software meets design requirements. They collaborate with cross-functional teams, translating UI/UX designs into code. Additionally, they may be involved in updating and improving existing applications, staying updated with Dart developments, and documenting software specifications. Their goal is to create high-quality, intuitive, and responsive applications for users.