Note: The job is a remote job and is open to candidates in USA. Dexian is a leading provider of staffing, IT, and workforce solutions with over 12,000 employees and 70 locations worldwide. They are seeking an experienced Senior Microsoft Systems Administrator to lead the administration, security, and optimization of enterprise Microsoft cloud infrastructure in a fast-paced, highly regulated remote environment.

Responsibilities

• Administer and maintain enterprise Microsoft 365, Azure, Entra ID, Intune, Exchange Online, and Microsoft security platforms
• Manage Zoom enterprise environment , including Zoom Phone, AI capabilities, SMS, and collaboration tools
• Lead vulnerability management, system patching, endpoint security, and security hardening initiatives
• Support tenant migrations, Microsoft environment integrations, and onboarding of newly acquired business entities
• Execute data migration activities using tools such as BitTitan, ShareGate, and related migration platforms
• Monitor and optimize identity access management, authentication policies, conditional access, and endpoint compliance
• Partner with external managed service providers to support escalations, infrastructure maintenance, and operational excellence
• Provide responsive technical support within a fully remote business environment requiring high-touch customer service
• Ensure infrastructure aligns with security best practices, compliance standards, and operational requirements
• Develop documentation, system procedures, and technical recommendations for continuous improvement

Skills

• 5+ years of hands-on experience administering Microsoft 365 and Azure enterprise environments
• Strong expertise with Entra ID (Azure AD), Intune, Exchange Online, Microsoft Defender, and endpoint management
• Experience managing enterprise Zoom environments, including telephony solutions
• Proven background in vulnerability remediation, patch management, and security administration
• Experience supporting Microsoft tenant migrations, system integrations, or acquisition onboarding projects
• Strong knowledge of identity management, MFA, access controls, endpoint security, and cloud governance
• Experience working with MSPs, third-party infrastructure teams, or managed services environments
• Excellent communication, presentation, and stakeholder management skills
• Experience in financial services, wealth management, banking, or other regulated industries

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