Senior System Administrator – L3

Marktine; Jaipur; Presencial; INR 900.000 - 1.300.000; Jornada completa

Descripción de la vacante

Marktine is seeking an experienced Senior System Administrator to manage and secure enterprise IT infrastructure across Windows Server, Active Directory, Microsoft 365, Azure, and virtualization. The role requires hands-on expertise in AD/Entra ID, hybrid identity, and cloud integration.

The ideal candidate will monitor performance, handle patching, backup, and incident RCA, and collaborate with vendors and internal teams to resolve complex issues.

Formación

• Bachelor's degree or equivalent in a technical field.
• 6+ years of hands-on IT infra and system administration experience.
• Strong expertise in Active Directory, Azure AD/Entra ID, and Microsoft 365 administration.

Responsabilidades

• Administer and troubleshoot Windows Server and Linux environments.
• Manage server roles, services, storage, permissions, and performance.
• Configure AD, Group Policy, DNS, DHCP and domain services.
• Troubleshoot authentication, access, and MFA/CA/SSO in hybrid identities.
• Monitor server health, perform patching and upgrades, and ensure security.
• Support virtualization platforms and backups in on-premises and cloud.

Conocimientos

Windows Server administration

Active Directory

Azure AD / Entra ID

Microsoft 365 administration

PowerShell scripting

Group Policy management

VMware / virtualization

Backup & recovery

Educación

Bachelor's degree in Computer Science or related field

Herramientas

VMware

Hyper-V

Nutanix

VirtualBox

PowerShell

Descripción del empleo

Job Description

0-15 Days / Currently serving notice period

8 days ago

Key Responsibilities

• Administer and troubleshoot Windows Server and Linux environments.
• Manage server roles, services, processes, storage, permissions, and system performance.
• Configure and manage Active Directory, Group Policy, DNS, DHCP, and domain services .
• Manage user accounts, groups, permissions, authentication, and access.
• Troubleshoot server performance, availability, application, and OS-related issues.
• Perform operating system patching, upgrades, and maintenance.
• Monitor server health, CPU, memory, disk, services, and system logs.
• Perform server installation, configuration, migration, and decommissioning activities.
• Troubleshoot server-client connectivity and application-related issues.
• Strong hands-on experience with Active Directory administration.
• Troubleshoot AD replication, authentication, login, DNS, and Group Policy issues.
• Working knowledge of Microsoft Entra ID / Azure AD .
• Support hybrid identity environments involving Active Directory and Entra ID .
• Manage identity and access-related issues.
• Working knowledge of MFA, Conditional Access, SSO, and identity security.
• Administer and troubleshoot Microsoft 365 environments.
• Troubleshoot user authentication, mailbox, email delivery, permissions, licensing, and Microsoft 365 service issues.
• Support hybrid on-premises and cloud environments.
• Troubleshoot cloud connectivity, authentication, compute, storage, and access issues.
• Monitor Azure resources and identify performance or availability issues.
• Assist with cloud migration and infrastructure improvement projects.
• Manage and troubleshoot enterprise virtualization environments.
• Troubleshoot VM connectivity, resource utilization, storage, and performance issues.
• Manage and monitor enterprise backup solutions.
• Perform backup configuration, monitoring, restore, and recovery activities.
• Perform Root Cause Analysis (RCA) for major incidents.
• Identify recurring issues and recommend permanent corrective actions.
• Work with vendors and internal teams to resolve complex issues.
• Use PowerShell for system administration and automation.

Technical Skills

• Windows Server | Active Directory | Group Policy | DNS | DHCP | File Services | Windows Services | Server Monitoring | Patch Management | Server Hardening | Microsoft 365 | Exchange Online | Teams | SharePoint Online | OneDrive | Microsoft 365 Admin Center | Microsoft Entra ID / Azure AD | Active Directory | MFA | Conditional Access | SSO | RBAC | Authentication | Authorization | Microsoft Intune | Device Enrollment | Configuration Profiles | Compliance Policies | Application Deployment | Windows Update | Endpoint Security | Windows Autopilot | VMware | Hyper‑V | Nutanix | VirtualBox | VM Provisioning | Snapshots | VM Migration | Resource Management

Qualifications

• Bachelor’s degree in computer science, Information Technology, Computer Engineering, or a related technical field, or equivalent industry experience.

Job Highlights

We are looking for an experienced Senior System Administrator with 6+ years of hands‑on experience in IT infrastructure and system administration.

The candidate will be responsible for managing, maintaining, monitoring, troubleshooting, and securing enterprise infrastructure across Windows Server, Active Directory, Microsoft 365, Azure, Intune, virtualization, backup, security, and IT operations.

Key Skills

• hybrid identity environments
• cloud environments
• windows server administration
• server services management
• process management
• storage management
• permissions management
• system performance monitoring
• group policy configuration
• dhcp configuration
• domain services management
• user account management
• group management
• access management
• server availability troubleshooting
• application troubleshooting
• operating system patching
• operating system maintenance
• cpu monitoring
• memory monitoring
• services monitoring
• system logs monitoring
• server configuration
• server-client connectivity troubleshooting
• ad replication troubleshooting
• ad authentication troubleshooting
• ad login troubleshooting
• group policy troubleshooting
• hybrid identity support
• identity and access issue management
• microsoft 365 administration
• user authentication troubleshooting
• mailbox troubleshooting
• microsoft 365 service issue troubleshooting