An IT Support Engineer is responsible for providing technical support to users within an organization. This can include troubleshooting hardware and software issues, setting up and maintaining computer systems, and assisting with network connectivity problems. They may also be responsible for installing new software or hardware, performing system upgrades, and ensuring that all systems are secure and up-to-date. Additionally, IT Support Engineers may provide training to users on how to use technology effectively and may also be involved in developing and implementing IT policies and procedures.