Software engineers are computer science professionals who use engineering principles and programming languages to design, develop, test, and maintain software applications. They create computer systems and applications to solve real-world problems, and they apply engineering principles and knowledge of programming languages to build software solutions for end-users. Software engineers design and develop computer games, business applications, operating systems, network control systems, and middleware, among other things. They also test, improve, and maintain software built by other engineers. Successful software engineers use programming languages, platforms, and architectures to develop everything from computer games to network control systems. They analyze user needs, provide consultation services to discuss design elements, and coordinate software installation. They also maintain existing software and create new software, making updates to align with the latest industry and company standards, troubleshooting problems, and brainstorming future improvements. In summary, software engineers are responsible for creating software solutions that meet their companies needs and expectations, and they work in many different industries and fields, as nearly all businesses use software.