Essential competencies required for an advanced cross-platform IT support professional. This includes proficiency across multiple operating systems, specifically Windows, macOS, and Linux, and the ability to assist both technical and non-technical staff. Key technical skills involve a strong grasp of networking concepts like TCP/IP and troubleshooting VPNs, alongside the practical ability to perform hardware-level tasks such as installing operating systems and cable management. Furthermore, the role necessitates competence in managing user lifecycle tasks (onboarding and off-boarding), handling access control via technologies like SSO and Active Directory, and troubleshooting common infrastructure components such as WAPs and VoIP phones. Finally, the professional must be adept at application-level support and maintaining thorough documentation, knowledge bases, and asset inventories.