An Amazon Web Service (AWS) developer designs, deploys, and manages applications on the AWS cloud platform. They are responsible for setting up, configuring, and maintaining scalable and secure systems. Their duties include writing code, optimizing performance, troubleshooting software, and ensuring data integrity and security. They work with AWS tools and services like , , and RDS, and use coding languages like Python, Java or Node.js. They also design and implement AWS architectures, automate processes, and collaborate with other team members to develop and improve cloud solutions. They need to stay updated with AWS updates and innovations.