IT Systems Engineer (L2/L3) – Backend Systems Support

Work Time PST Hours California Time Zone from India Work from home.

Position Overview

We are seeking an experienced IT Systems Engineer to provide remote backend systems and infrastructure support across Windows Server, cloud, identity, virtualization, networking, and security environments. The role focuses on systems administration, advanced troubleshooting, security remediation, and infrastructure projects, with independent problem-solving and collaboration with U.S.-based engineering teams.

Experience: Minimum 7+ years of hands-on IT experience

Work Type: Remote Support

Job Responsibilities

- Administer, maintain, and troubleshoot Windows Server environments, Active Directory, Group Policy, DNS, DHCP, domain controllers, permissions, and authentication.
- Manage Microsoft Entra ID, including user accounts, MFA, Conditional Access, and hybrid identity configurations.
- Support Microsoft Azure infrastructure, including virtual machines, networking, storage, and associated cloud services.
- Administer Microsoft 365 services such as Exchange Online, Teams, SharePoint, and OneDrive.
- Maintain VMware ESXi and Microsoft Hyper-V virtualization environments.
- Troubleshoot TCP/IP connectivity, VLANs, VPNs, firewalls, and related network infrastructure.
- Monitor backup operations, investigate backup failures, and perform data restoration and disaster recovery activities.
- Perform server and workstation patching, vulnerability assessment, security hardening, and remediation.
- Investigate security events and coordinate incident response and threat remediation with security teams.
- Implement infrastructure upgrades, migrations, new system deployments,



and on-premises/cloud changes.
- Resolve complex L2/L3 incidents, perform root cause analysis, and document findings and corrective actions.
- Use PowerShell for systems administration, troubleshooting, and task automation.
- Coordinate with hardware, software, and cloud vendors to resolve technical issues; maintain accurate technical documentation.

Requirements (Competence, Experience and Education)
- Minimum 7 years of hands-on experience in IT infrastructure, systems administration, or equivalent technical support roles.
- Strong practical knowledge of Windows Server, Active Directory, Microsoft Entra ID, Azure, and Microsoft 365.
- Hands-on experience with VMware ESXi, Hyper-V, network troubleshooting, and backup/disaster recovery.
- Experience in patch management, vulnerability remediation, endpoint security, and security incident investigation.
- Familiarity with EDR and SIEM technologies and coordination with security operations teams.
- Ability to independently diagnose complex L2/L3 issues and conduct root cause analysis.
- Working knowledge of PowerShell scripting and automation.
- Experience with infrastructure implementations, upgrades, and cloud/on-premises migrations.
- Strong written and verbal English communication, documentation, prioritization, and remote collaboration skills.

Preferred Qualifications
- Previous experience providing remote technical support across multiple IT environments.
- Familiarity with ConnectWise RMM, ScreenConnect, and PSA or ticketing platforms.
- Experience with SentinelOne, Microsoft Defender, infrastructure monitoring, and automation tools.
- Relevant Microsoft certifications in Azure, Microsoft 365, or Windows Server.

📌 IT Systems Engineer/– Backend Systems Support (India)
🏢 Rexus Group
📍 India