Learn About Being a Software Engineer What does a software engineer do? Software engineers develop systems and software for businesses. These products range from business applications and games to network control systems and operating systems. A software engineer’s responsibilities may also include: Working with users to determine their software needs Designing, developing and testing a system or application according to the users’ specifications Drawing diagrams and models that help developers create the appropriate code for the system or application Documenting the system or application in detail to help those responsible for future maintenance Maintaining the system or application with updates and fixes as necessary Recommending software upgrades for existing systems or applications Collaborating with developers and other engineers to create software Average salary As a software engineer, your salary will vary depending on whether you develop applications or systems. Software ...