An "IT guy" is a colloquial term for a person who works in information technology (IT) support or IT services. The more formal job titles for IT professionals may vary depending on their specific roles and responsibilities, but some common job titles in the IT field include:
IT Support Specialist
Help Desk Technician
Network Administrator
Systems Administrator
Database Administrator
IT Consultant
Software Developer
Web Developer
Cybersecurity Analyst
IT Manager
These job titles may be used to describe individuals who work in different areas of IT, such as hardware, software, networking, security, or project management.