A “Stack Developer” typically refers to someone who is skilled in a specific set of technologies or layers of a software stack. There are various kinds of stack developers depending on the technologies they specialize in. Here are a few common examples:

1. Full Stack Developer: Skilled in both front-end and back-end development. They are capable of working on the server side (like handling database, server, and application logic) as well as the client side (like implementing the user interface of a web application).

2. MEAN Stack Developer: Specializes in MongoDB, Express.js, AngularJS, and Node.js. These technologies represent a specific grouping of software used for full-stack development.

3. MERN Stack Developer: Similar to MEAN, but uses React.js instead of AngularJS.

4. LAMP Stack Developer: Specializes in Linux, Apache, MySQL, and PHP/Perl/Python.

5. Front-End Developer: Focuses on the user interface and user experience part of an application using technologies like HTML, CSS, and JavaScript along with frameworks like React, Vue.js, or Angular.

6. Back-End Developer: Works on the server side, dealing with database interactions, server logic, APIs, and architecture using languages like Java, Python, Ruby, or PHP.

7. DevOps Engineer: Although not always grouped under stack developers, they work on technologies across stacks focusing on automation, orchestration, deployment, and operation of applications and infrastructure.