A Web designer is someone who prepares content for the Web. This role is mainly related to the styling and layout of pages with content, including text and images.Web designers commonly rely on HTML, CSS and additional Web design tools.
Responsibilities :
- Conceptualizing creative ideas with clients.
- Testing and improving the design of the website.
- Establishing design guidelines, standards, and best practices.

A Web developer is a programmer who specializes in, the development of World Wide Web (WWW) applications using a client–server model. Responsibilities :
- Writing well designed, code.
- Creating website layout/user interfaces by using standard HTML/CSS.
- Integrating data from various back-end services.

Java developers work at all stages of the engineering process, like soliciting requirements, designing prototypes, and configuring products. Responsibilities :
- Designing and developing high-volume, low-latency applications.
- Contributing in all phases of the development lifecycle.
- Writing well designed, testable, efficient code.

Mobile app developer developes the mobile app for mobile devices, such as personal digital assistants, enterprise digital assistants or mobile phones.
Responsibilities :
- Produce fully functional mobile applications writing clean code.
- Gather specific requirements and suggest solutions.
- Write unit and UI tests to identify malfunctions.

Digital marketer markets the products or services using digital technologies, mainly on the Internet, but also including mobile phones, display advertising, and many other digital mediums.
Responsibilities :
- Plan and execute all digital marketing, including SEO/SEM.
- Design, build and maintain our social media presence.
- Brainstorm new and creative growth strategies.