Job Title

Job Summary We are seeking a highly skilled Level 3 MSP Engineerto act as the final escalation point for complex infrastructure, cloud, security, networking, and unified communications issues. The ideal candidate will have deep hands-on experience withCisco collaboration technologies, Microsoft 365, Azure AD, enterprise networking, firewalls, security platforms, and virtualization . This role requires strong troubleshooting expertise, architectural understanding, and the ability to work independently in a fast-paced Managed Services or enterprise IT environment.Key Responsibilities Tier 3 Support & Escalations Act as the highest level of technical escalation for complex infrastructure, network, security, and UC issues. Perform deep root-cause analysis and provide permanent fixes for recurring problems. Work closely with L1/L2 teams, providing guidance, mentoring, and technical direction.Unified Communications & Voice Administer, troubleshoot, and upgradeCisco CUCM, UCCX, CUC , and related collaboration components. ManageWebex Calling , Cisco IP Phones, and Webex soft clients. Troubleshoot SIP call flows, call setup issues, and vendor interoperability problems. UseWiresharkto analyze packets, reconstruct calls, debug SIP sessions, and identify voice quality issues. Manage and upgrade3CX PBXenvironments.Microsoft 365 & Azure AdministerOffice 365 / Microsoft 365tenants at scale. PerformExchange On-Prem to O365 migrations . HandleGoDaddy Office 365 defederationand migration to full Microsoft 365 tenants. Develop and maintainPowerShell scriptsfor large-scale tenant administration and automation. Implement and manageAzure Enterprise Applicationsand SAML integrations (Meraki, Webex, etc.). ManageAzure AD (Entra ID)– cloud-only and hybrid environments. ConfigureAzure AD Join , device policies, and identity integrations. AdministerAzure Endpoint Management (Intune)for device and policy management.Security & Identity Implement and manageDUO MFAand2FA for VPNs(Meraki, Sophos, SonicWALL). Configure and supportDUO RADIUS Authentication Proxy . Manage and troubleshootSentinelOneendpoint protection. Implement secure authentication and access control across cloud and on-prem environments.Networking & Firewalls Manage and troubleshoot: Cisco switches Meraki switches, Wi-Fi, and firewalls Cisco Firepower firewallsandFirepower Management Center Cisco ASA firewalls , including upgrades and migrations (SFR modules) Design, implement, and troubleshootSite-to-Site VPNs . PerformCisco Nexus switchupgrades, configuration, and lifecycle management.Backup, Virtualization & Linux Design and managebackup and recoverysolutions. AdministerLinux systems , with a focus onimmutable backups for VEEAM repositories . ManageVMware vSphere / ESXienvironments, including implementation and upgrades.Required Skills & Expertise Core Technical Skills Cisco Collaboration (CUCM, UCCX, CUC, Webex) Microsoft 365 / Office 365 Azure AD (Entra ID), Intune, Azure Enterprise Apps DUO MFA, VPN security, firewall authentication Cisco, Meraki, ASA, Firepower, Nexus networking SIP, VoIP, packet-level troubleshooting (Wireshark) PowerShell scripting VMware vSphere / ESXi Linux administration (backup-focused) SentinelOne 3CX PBXSoft Skills Strong analytical and problem-solving mindset Excellent documentation and communication skills Ability to work independently on critical issues Experience mentoring L1/L2 engineers Customer-focused approach in high-pressure situationsPreferred Certifications (Nice to Have) CCNP / CCIE (Collaboration, Security, or Enterprise) Microsoft Azure Administrator / Architect VMware VCP Security certifications (DUO, SentinelOne, firewall vendors)