[Remote] Sr. Microsoft 365 Administrator (L2/L3)

Note: The job is a remote job and is open to candidates in USA. iSoftStone, Inc. is seeking a Senior M365 System Administrator (L2/L3) to join our Team. This role involves supporting the design, implementation, and ongoing operations of enterprise Microsoft 365 environments, focusing on solution architecture, system engineering, and advanced administration.

Responsibilities

• Lead solution design and technical architecture for Microsoft 365 and related services
• Translate business and security requirements into scalable, secure, and supportable solutions
• Define architecture patterns across: Identity & access (SSO, Conditional Access, Zero Trust), Endpoint management (Intune / UEM), Collaboration & messaging (Exchange, Teams, SharePoint)
• Produce high-level and low-level design (HLD/LLD) documentation
• Evaluate new features and technologies, and provide design recommendations and roadmaps
• Ensure solutions align with enterprise standards for security, compliance, and performance
• Provide L2/L3 support for Microsoft 365 services, including escalation handling and root cause analysis
• Administer: Exchange Online, Teams, SharePoint Online, OneDrive, Azure AD / Entra ID
• Troubleshoot complex issues across identity, messaging, collaboration, and endpoint environments
• Administer Microsoft Intune and UEM platforms
• Manage device compliance, configuration profiles, and application deployment
• Operate and optimize EDR solutions such as Microsoft Defender for Endpoint
• Design and implement endpoint security baselines and compliance policies
• Support enterprise endpoint strategy across Windows, macOS, and mobile devices
• Design and implement SSO, MFA, and Conditional Access architectures
• Integrate enterprise applications using SAML, OAuth, and OpenID Connect
• Support hybrid identity (on-prem AD + cloud) and identity lifecycle management
• Contribute to identity governance and Zero Trust initiatives
• Develop and maintain automation using PowerShell
• Build reusable scripts and tooling for provisioning, reporting, and compliance
• Improve operational efficiency through automation and standardization
• Troubleshoot and design solutions related to DNS, authentication, and connectivity
• Work with network teams on secure access (proxy, firewall, conditional access integration)
• Ensure reliable service integration across cloud and on-prem environments
• Implement Microsoft 365 security controls and policies aligned with best practices
• Support audit, compliance, and eDiscovery requirements
• Collaborate with security teams on monitoring, alerting, and incident response

Skills

• Five to eight+ years of Microsoft 365 administration and engineering experience
• Proven experience in solution design/architecture for Microsoft 365 environments
• Strong hands-on expertise in: Microsoft 365 core services (Exchange Online, Teams, SharePoint)
• Intune / UEM / EDR
• Azure AD (Entra ID), SSO, Conditional Access
• Advanced PowerShell scripting skills
• Solid understanding of: Identity protocols (SAML, OAuth, OpenID Connect)
• DNS, networking, and security fundamentals
• Experience with hybrid environments (on-prem and cloud)
• Strong architecture thinking with hands-on execution ability
• Ability to translate requirements into practical technical designs
• Strong troubleshooting and problem-solving skills
• Effective communication with cross-functional stakeholders
• Proactive, automation-driven mindset
• Ability to design solutions and contribute to architecture decisions, implement and optimize systems end-to-end, and provide advanced L2/L3 operational support
• Microsoft certifications (MS-102, SC-300, MD-102)
• Experience with Zero Trust architecture design
• Familiarity with SIEM tools such as Microsoft Sentinel
• Experience in enterprise or global environments

Benefits

• W2 CONTRACT POSITION (JUNE 2026 THROUGH FEBRUARY 2027)

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