A Full Stack Developer is expected to possess a broad range of knowledge and skills to work on both the front-end and back-end of web applications. Here’s a breakdown of the knowledge areas and skills that a Full Stack Developer should typically have:

Front-End Development:

1. HTML/CSS: Proficiency in HTML for structuring web content and CSS for styling web pages is fundamental.
2. JavaScript: Strong knowledge of JavaScript, including ES6+ features, to create interactive and dynamic user interfaces.
3. Front-End Frameworks: Familiarity with popular front-end frameworks/libraries like React, Angular, or Vue.js for building scalable and efficient web applications.
4. Responsive Design: Understanding of responsive web design principles to ensure web applications work well on various devices and screen sizes.
5. Web Performance: Knowledge of techniques and tools for optimizing web performance, including minimizing load times and reducing resource consumption.

Back-End Development:

1. Server-Side Programming: Proficiency in a back-end programming language such as Node.js, Python, Ruby, Java, C#, PHP, etc.
2. Back-End Frameworks: Familiarity with back-end frameworks like Express.js (Node.js), Django (Python), Ruby on Rails (Ruby), Spring Boot (Java), or similar frameworks.
3. Database Management: Understanding of databases, both SQL (e.g., MySQL, PostgreSQL) and NoSQL (e.g., MongoDB, Redis), and the ability to design and manage databases efficiently.
4. API Development: Creating RESTful or GraphQL APIs to facilitate communication between front-end and back-end components.
5. Authentication and Authorization: Implementing user authentication and authorization mechanisms to secure web applications.
6. Server Management: Knowledge of server deployment, configuration, and management using platforms like AWS, Azure, or Google Cloud.

Full Stack Skills:

1. Version Control: Proficiency in using version control systems like Git to manage and collaborate on code.
2. DevOps: Understanding of DevOps principles, including continuous integration/continuous deployment (CI/CD) pipelines and containerization (e.g., Docker).
3. Testing: Ability to write unit tests, integration tests, and end-to-end tests to ensure the reliability of web applications.
4. Security: Awareness of web security best practices, including protection against common vulnerabilities like SQL injection, Cross-Site Scripting (XSS), and Cross-Site Request Forgery (CSRF).
5. Web APIs: Knowledge of consuming third-party APIs and integrating them into web applications.
6. Agile/Scrum: Familiarity with Agile development methodologies and Scrum practices for effective project management.
7. Problem-Solving: Strong problem-solving skills to troubleshoot issues and debug code efficiently.
8. Documentation: Creating clear and concise documentation for code, APIs, and projects.
9. Soft Skills: Effective communication, teamwork, and adaptability to work collaboratively with other developers, designers, and stakeholders.
10. Continuous Learning: A commitment to staying updated with the latest web development trends, technologies, and best practices.