Senior System Administrator

Shift Ahead requires a capable handson Systems Administrator for its client operations to work independently . Excellent communication is mandatory and immediate joining will be required
Experience - 4 to 8 years (hands on experience)
US shifts (6:30pm IST onwards)
Willing to join immediately

Location :
Remote Working
Department : IT
Reports To :
Systems and End User Support Manager

Position Summary :
The Systems Administrator will manage and maintain the organization's hybrid cloud infrastructure, seamlessly integrating on-premises systems with Microsoft Office 365, Azure, and Microsoft Defender. This role includes managing multiple tenants to ensure smooth operation and security across all environments, understanding and optimizing various billing plans to manage and reduce costs, handling tickets and documentation, and providing Tier 3 support
This role requires someone who can work independently, take ownership of priorities, and stay highly responsive to requests and incidents. The Systems Administrator must communicate clearly, use sound judgment to triage competing demands, and collaborate effectively with others to support a strong team environment
The ideal candidate will have a robust understanding of hybrid cloud systems, strong organizational skills, and the ability to provide high-level technical support and solutions while effectively communicating and collaborating with team members. Preference will be given to candidates who have experience working in middle to large enterprise environments

Key Responsibilities :
Microsoft 365 (Office 365) Administration
Administer Microsoft 365 services (Exchange Online, SharePoint, Teams, One Drive, Intune, and related applications
Provision accounts and manage licenses and group membership
Complete quarterly access and license audits; document findings and follow up on remediation
Configure and enforce Microsoft 365 security settings and policie
Diagnose and resolve service issues; coordinate escalations with vendors as needed
Provide remote administration for Exchange Online, SharePoint Online, and on-prem Active Directory/Azure AD (as applicable)
Support multi-tenant environments, ensuring reliable integration and cross-tenant communication
2.Azure Administration
Deploy, operate, and monitor Azure resources and service
Design and maintain core components (virtual networks, virtual machines, storage, and identity integrations
Maintain high availability and disaster recovery capabilities for critical workload
Track performance and utilization; right-size resources to improve reliability and cost efficient
3.Microsoft Defender
Configure and maintain Microsoft Defender for endpoint protectio
Review alerts, investigate suspicious activity, and drive incident response through closur
Perform vulnerability reviews and coordinate remediation with IT and business stakeholder
Stay current on emerging threats and recommend control improvements and best practices
4.Email Migrations
Plan and execute tenant-to-tenant migrations and mailbox move
Conduct pre-migration discovery and readiness assessments; develop migration runbook
Minimize downtime and data loss; validate cutover and end-user readiness
Provide post-migration support, issue triage, and stabilizatios
Migrate mailboxes, shared mailboxes, public folders, and related user configurations
5.SharePoint Administration
Build and administer SharePoint Online sites, information architecture, and permissions/access control
Resolve SharePoint incidents and service requests; implement preventive improvements where appropriate
Apply governance, security, and compliance controls (retention, sharing, and auditing)
6.Hybrid Environment Management
Operate and improve hybrid connectivity between on-premises systems and Microsoft cloud services
Maintain secure communication and data flow across on-prem and cloud platforms
Support directory synchronization (AD to Azure AD) and identity lifecycle processe
Cost Optimization
Manage and validate Microsoft 365 and Azure licensing/billing plan
Analyze consumption and spend trends; identify anomalies and improvement opportunities
Recommend and implement cost-saving actions (right-sizing, reserved instances, license optimization, etc.
7.Ticketing and Documentation
Track work and outcomes in Jira/Confluence (or equivalent) and keep records current
Maintain clear, accurate documentation for changes, incidents, procedures, and configuration
Update tickets with status, stakeholder communications, and resolution detail
Jira experience is preferred but not require
8.Tier 2/ 3 Support
Handle escalated (Tier
3) requests and complex troubleshooting across the Microsoft stack
Meet SLA commitments and ensure timely updates to customers and internal stakeholder
Own assigned tickets through resolution, including root-cause analysis and prevention recommendations
9.General Responsibilities
Maintain system documentation, standards, and IT policies
Provide technical guidance and occasional training to end users and Tier 1/2 staff
Partner with IT peers to…