Your role as a full-stack web developer includes designing, developing, and maintaining both front-end and back-end web applications. You should have knowledge and experience in technologies such as HTML, CSS, JavaScript, as well as back-end programming languages like Python, Java, Ruby. Experience working with web frameworks such as React, Angular, Vue.js, Express, Django, Next.js, Flask, or Ruby on Rails is required. Experience with databases, application architecture, security, best performance practices, debugging, troubleshooting, and automated testing is also important. Collaboration with other developers, designers, and stakeholders is essential to create user-friendly web applications.