A Full-stack developer is responsible for both the frontend and backend development of web applications. This includes:

• Frontend Development: Creating user interfaces and ensuring a seamless user experience using HTML, CSS, and JavaScript frameworks like React, Angular, or Vue.js.
• Backend Development: Managing server-side logic, databases, and application programming interfaces (APIs) using languages such as Node.js, Python, Ruby, or Java.
• Database Management: Designing, implementing, and maintaining databases using systems like MySQL, PostgreSQL, or MongoDB.
• Version Control: Using version control systems like Git to manage code changes and collaborate with other developers.
• Deployment: Setting up web servers and deploying applications, often using services like AWS, Heroku, or DigitalOcean.
• Problem Solving: Debugging software issues and optimizing performance to ensure applications run smoothly.
• Collaboration: Working closely with designers, product managers, and other stakeholders to build features that meet user needs.

In essence, a Full-stack developer has a versatile skill set that covers all aspects of web development, making them capable of building complete web applications from start to finish.