A Full Stack Developer is a professional who can handle both front-end and back-end development of web applications. They are proficient in a range of technologies that cover server, network, hosting environment, database, API, user interface, and user experience. Here’s an overview of a typical tech stack for a Full Stack Developer:

Front-End (Client-Side) Technologies

1. HTML/CSS: Building blocks of web development. HTML for structuring content and CSS for styling.
2. JavaScript: Essential for creating interactive and dynamic web pages. Knowledge of ES6+ (modern JavaScript standards) is beneficial.
3. Front-End Frameworks/Libraries:
   1. React.js: A popular JavaScript library for building user interfaces, especially single-page applications.
   2. Angular: A comprehensive framework for dynamic web apps.
   3. Vue.js: A progressive framework for building user interfaces.
4. Responsive Design: Frameworks like Bootstrap or Materialize CSS for creating designs that work on various devices.
5. Version Control/Git: Managing and tracking changes in code, essential for collaboration and deployment.

Back-End (Server-Side) Technologies

1. Server-Side Languages:
   1. Node.js: JavaScript runtime for building scalable network applications.
   2. Python: Widely used, with frameworks like Django and Flask.
   3. Ruby: Known for Ruby on Rails, a full-stack web framework.
   4. PHP: Popular for web development, with frameworks like Laravel.
   5. Java: Used in large-scale enterprise environments, with frameworks like Spring.
   6. C#: With .NET framework, used for a wide range of applications.
2. Databases:
   1. SQL Databases: MySQL, PostgreSQL, SQL Server.
   2. NoSQL Databases: MongoDB, Cassandra, Redis.
3. API Development: RESTful and GraphQL API skills for effective communication between front-end and back-end.