Senior Infrastructure Engineer (Wintel, Messaging & Cloud Ops)

Senior Infrastructure Engineer (Wintel, Messaging & Cloud Ops) Location: Client Premises, Dubai, UAE Salary: AED 11,000 to 14,000 per month Benefits: Work visa, air tickets, medical insurance, gratuity, paid time off Experience Required: Minimum 5 years of relevant work experience As a Senior Infrastructure Engineer, you will be responsible for the stability, integrity, and seamless operation of our airline client's core Wintel and Messaging platforms. In this enterprise-grade role, you will manage a complex hybrid environment, bridging on-premise legacy systems with public cloud infrastructure (AWS/Azure). Your mission is to optimize and secure the digital workspace for a global workforce, ensuring high availability of communication and identity services around the clock. Key Responsibilities Messaging & Collaboration: Act as the Subject Matter Expert for Exchange Hybrid environments, managing Exchange Online and on-premise servers. Oversee OneDrive, SharePoint, and the broader Office 365 suite. Identity & Security: Lead Windows Active Directory (AD) administration and manage Azure Enterprise Applications, including permission reviews and service principal governance. Implement and maintain Privileged Access Management (PAM/CyberArk). Infrastructure Services: Provide expert-level administration for Infoblox (DNS/DHCP), SFTP, and complex File Server environments (AWS FSx, DFSR, and SMB shares). Cloud & Virtualization: Deploy and manage cloud resources within AWS (EC2, RDS, S3, VPC) and optimize virtual desktops via Citrix DaaS. Systems Administration: Execute L3 support for Windows and RHEL OS, including patching, system hardening, and upgrades in compliance with global aviation security standards. Hardware Oversight: Support physical compute infrastructure, specifically Cisco UCS, ensuring hardware health and performance. Operational Excellence: Set standards for monitoring and maintenance within a 24/7 rotational shift model, ensuring zero downtime for mission-critical airline operations. Required Skills & Experience Wintel & Directory Services: 5–8 years of expert experience in Windows AD, DNS, DHCP, and Windows Server technologies. Messaging Expert: Proven track record in managing Exchange Hybrid and Office 365 migrations/operations at scale. Networking & Storage: Advanced proficiency in Infoblox, SFTP, and distributed file systems (DFSR/AWS FSx). Cloud & Security: Expertise in Azure AD (Entra ID) App registrations and permissions; hands-on experience with AWS Cloud Operations and PAM (CyberArk preferred). Modern Workspace: Proficiency in Citrix DaaS and RHEL IDAM solutions. Technical Breadth: Knowledge of Cisco UCS hardware and general cloud infrastructure (AWS/OCI).