Senior System Engineer – Windows, Azure & Networking

OculusIT; Hampton (VA); On-site; USD 90,000 - 130,000; Full time

Job summary

OculusIT in the United States is seeking a Level 3 System Engineer with deep expertise across Windows and network technologies. The role serves as final escalation for complex incidents, owns RCA, and provides technical leadership across Microsoft and network environments.

You will administer Microsoft 365, Azure Entra ID, Active Directory, Hyper-V, and LAN/WAN infrastructure, with hands-on guidance to L1/L2 teams and collaboration with stakeholders to ensure reliable operations.

Qualifications

• Experience in infrastructure support and operations.
• Experience handling L3 escalations and critical incidents.
• Experience in enterprise or MSP environments.
• Strong communication and documentation skills.

Responsibilities

• Act as the L3 escalation point for infrastructure incidents and service requests.
• Administer and troubleshoot Microsoft 365 services including Exchange Online, Teams, OneDrive, and SharePoint.
• Manage Azure Entra ID (Azure AD), hybrid identity, SSO, MFA, and Conditional Access.
• Administer Active Directory, Group Policy, DNS, DHCP, and Windows Server environments.
• Manage and troubleshoot Hyper‑V virtualization platforms.
• Perform server patching, upgrades, security hardening, and vulnerability remediation.
• Design, implement, and support LAN/WAN infrastructure.
• Manage switches, routers, firewalls, VPNs, and wireless controller environments.
• Support firewall technologies such as Palo Alto, Fortinet, and Cisco FTD.
• Perform RCA for recurring incidents and infrastructure outages.
• Create SOPs, architecture documentation, and operational procedures.
• Mentor L1/L2 engineers and provide technical leadership Coordinate with stakeholders, consultants, and technical teams for successful project delivery.

Skills

Microsoft 365 administration

Azure Entra ID (Azure AD)

Hybrid identity / SSO

Active Directory administration

Windows Server 2016/2019/2022

Hyper-V administration

Networking fundamentals (TCP/IP, VLANs

LAN/WAN infrastructure troubleshooting

Incident management and RCA

Tools

Microsoft 365

Azure AD

Palo Alto firewalls

Fortinet

Cisco FTD

Hyper-V

DNS/DHCP

VPNs

Job description

OculusIT in the United States is seeking a Level 3 System Engineer with deep expertise across Windows and network technologies. The role serves as final escalation for complex incidents, owns RCA, and provides technical leadership across Microsoft and network environments.

You will administer Microsoft 365, Azure Entra ID, Active Directory, Hyper-V, and LAN/WAN infrastructure, with hands-on guidance to L1/L2 teams and collaboration with stakeholders to ensure reliable operations.