System Administrator - Cloud, Security & IT Ops

STraffic; Fairfax (VA); On-site; USD 70,000 - 95,000; Full time

Job summary

STraffic in Vienna, Virginia is seeking a Mid-level System Administrator to maintain and optimize IT infrastructure, networks, and security. You will support employees with day-to-day technical needs and manage on-premises and cloud environments, including Microsoft 365 and Azure AD.

The ideal candidate has hands-on system administration experience, cybersecurity fundamentals, and the ability to troubleshoot in a small-to-mid-sized enterprise.

Qualifications

• 3+ years hands-on system administration or IT infrastructure experience.
• Experience with Microsoft 365, Azure AD, or similar platforms.
• Knowledge of networking fundamentals (TCP/IP, DNS, DHCP, VPN, firewalls).
• Experience with endpoint protection and basic cybersecurity practices.
• Strong troubleshooting and problem-solving skills.
• Ability to manage multiple priorities in a fast-paced environment.

Responsibilities

• Manage on-premises and cloud-based server environments to ensure stable operation.
• Configure and support network equipment including routers, switches, firewalls, VPNs, and Wi‑Fi systems.
• Administer desktops, laptops, mobile devices, printers, and IT peripherals.
• Maintain Microsoft 365, Azure AD, Google Workspace, or equivalent cloud platforms.
• Perform system updates, patch management, and configuration improvements.

Skills

System administration

Microsoft 365

Azure AD

Networking fundamentals

Endpoint protection

Troubleshooting

Scripting (PowerShell/Bash/Python)

Job description

STraffic in Vienna, Virginia is seeking a Mid-level System Administrator to maintain and optimize IT infrastructure, networks, and security. You will support employees with day-to-day technical needs and manage on-premises and cloud environments, including Microsoft 365 and Azure AD.

The ideal candidate has hands-on system administration experience, cybersecurity fundamentals, and the ability to troubleshoot in a small-to-mid-sized enterprise.