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)
Company Overview
iSoftStone is a global IT service and consulting company that creates value and drives success through technology solutions, service excellence, and digital innovation. It was founded in 2005, and is headquartered in Bellevue, Washington, USA, with a workforce of 10001+ employees. Its website is https://www.isoftstoneinc.com.