# Frontend Developer Profile: Frontend Developer # Get Certified as a Squirro Frontend Developer! [](https://learn.squirro.com/learn/public/learning_plan/view/5/squirro-front-end-developer-training-certification) Sign up for the [Front End Developer](https://learn.squirro.com/learn/public/learning_plan/view/5/squirro-front-end-developer-training-certification) course at the Squirro Academy! Frontend developers are software engineers trained in JavaScript, CSS, React, and HTML technologies. In the context of Squirro, frontend developers can extend the user interface by creating custom dashboard widgets using [React](https://reactjs.org/). For a step-by-step guide to creating custom widgets, see [How to Create a Squirro Custom Widget](../technical/widgets/how-custom.md#widgets-custom-how). For more information on the framework used by Squirro, refer to the [React Custom Widgets](../technical/widgets/react/index.md#widgets-react) page.