ITTConnect is seeking a Senior Infrastructure Engineer - Cisco CUCM expert to work remotely from anywhere in Brazil for a client in the US.MUST BE fluent in English.Requirements- 8+ years of IT Infrastructure experience.- MUST BE fluent in English.- Deep, hands-on experience with Cisco Unified Communications Manager (CUCM) and enterprise voice/unified communications infrastructure.- Deep experience with VMware vCenter and vSphere — including ESXi administration, vMotion, HA/DRS, distributed virtual switches, and VM lifecycle management.- Deep experience with Citrix Virtual Apps and Desktops (CVAD) or Citrix DaaS — including Delivery Controllers, StoreFront, NetScaler/ADC, machine catalogs, and VDA troubleshooting.- Strong experience troubleshooting complex multi-system infrastructure issues.- Experience designing and implementing infrastructure solutions.Preferred- Experience working in a Managed Service Provider (MSP) environment with exposure to ITIL-based service deliverymodels.- Experience delivering customer-facing IT infrastructure projects.- Experience with enterprise storage platforms.- Familiarity with identity platforms (Active Directory, Okta), firewalls (Palo Alto, Cisco FTD), and backup/disaster recovery solutions isa plus.