System Administrator

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

Job Title: System Administrator
Department: Management
Reports To: Head of Corporate Services
Location: Vienna, Virginia
FLSA Status: Exempt
Employment Type: Full-time
Experience Level: Mid-level (3-5 years)

Position Summary

The System Administrator is responsible for maintaining, monitoring, and optimizing the company's IT infrastructure, systems, networks, and security environment. This role ensures stable system performance, secure access, and efficient IT operations while supporting employees with day-to-day technical needs. The ideal candidate has hands-on experience in system administration, cloud platforms, cybersecurity fundamentals, and troubleshooting within a small-to-mid-size enterprise environment.

Responsibilities

Infrastructure & Systems Management

• Manage, monitor, and maintain on-premises and cloud-based server environments.
• Support and configure network equipment including routers, switches, firewalls, VPNs, and Wi-Fi systems.
• Install, configure, and maintain desktops, laptops, mobile devices, printers, and IT peripherals.
• Administer Microsoft 365, Azure AD, Google Workspace, or equivalent cloud platforms.
• Perform system updates, patch management, and configuration improvements.

Cybersecurity & Compliance

• Monitor and respond to security incidents, alerts, and vulnerabilities.
• Manage endpoint protection, email security solutions, MFA, and firewall policies.
• Conduct security assessments, enforce security standards, and support compliance frameworks (SOC, NIST, ISO preferred but not required).
• Maintain backup, disaster recovery, and business continuity procedures.
• Manage identity and access control including user provisioning and permission reviews.

IT Support & Operations

• Provide Tier 1/2 technical support for hardware, software, and network-related issues.
• Manage IT asset inventory, software licensing, hardware procurement, and vendor coordination.
• Document IT procedures, troubleshooting steps, and user guides.
• Support onboarding/offboarding processes including account setup, access management, and device preparation.

Project & Cross-Functional Support

• Support IT infrastructure upgrades, cloud migration initiatives, and security enhancement projects.
• Collaborate with headquarters and cross-border IT teams to align global standards and best practices.
• Assist with technical documentation for RFP/RFI submissions related to IT or security requirements.

Basic Qualifications

• 3+ years of hands-on experience in system administration or IT infrastructure
• 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

Preferred Qualifications

• Experience with scripting (PowerShell, Bash, Python)
• Certifications: CompTIA Network+, Security+, Microsoft, or equivalent
• Experience in small-to-mid enterprise environments or multi-site organizations