Software engineer focus on applying the principles of engineering to software development.

Their includes analyzing and modifying existing software as well as designing, constructing and testing end-user applications that meet user needs — all through software programming languages.  also focuses on the complex and large software systems that make up the core systems for an organization.

using many roles under the umbrella of software engineering, but the two main ones are Applications Software Developer and Systems Software Developer. Software engineers also tend to specialize in specific areas including databases, cloud, or operating systems such as iOS and Android.