IT System Administrator

The I.T. Corporate team at SMS is responsible for supporting multiple areas across different functions and platforms. As the IT System Administrator, you will administer systems across Microsoft 365 (commercial and GCC High), AWS, on-premises infrastructure, and working on our service desk team. The role is well suited to an experienced support professional who takes ownership of issues, communicates clearly with users, and adapts to evolving tools and processes as the business grows.

Work location: Hybrid; This role works a rotating onsite/remote schedule every 2 weeks. Approximately 2 days in office / 3 days remote week 1; 3 days in office / 2 days at remote week 2.

Onsite location: Mclean VA in our HQ office.

Since 1976, SMS has specialized in modernizing legacy IT and sustaining complex enterprise environments for federal agencies. With the goal of building long-term partnerships with our customers, we invest in our employees by providing the training, tools, and support they need to keep critical missions operational, improve performance, and reduce risk. SMS is headquartered in McLean, Virginia, with offices and on-site operations at customer locations throughout the United States. For additional information on SMS, visit www.sms.com.

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Job Responsibilities

• Administer Microsoft 365 across commercial and GCC High tenants, including Entra ID, Exchange, Teams, SharePoint, and Intune.
• Resolve Tier 1 and Tier 2 support requests and assist in building out our new Halo PSA service desk.
• Maintain on-premises and cloud infrastructure, including Proxmox, Windows and Linux servers, backups, and AWS production workloads.
• Manage business platforms such as SharePoint, Fillout and Zite, Notion, and Salesforce.
• Support contract programs, including the lifecycle of contractor-furnished equipment and hands-on support for program teams.
• Build automations and integrations with PowerShell, Python, or low-code tools, and assist in rolling out new AI-enabled to
• Keep systems audit-ready under ISO/IEC 20000-1, ISO/IEC 27001, and CMMC Level 2
• Participates in team initiatives, process improvements, and the rollout of new tools and technologies, adapts to changing responsibilities as the department and business evolve, and follows IT security, compliance, and data-handling policies in the performance of all duties.

Required Qualifications

• 4+ years of IT experience, including at least two years administering systems
• Hands-on experience in at least three of these areas: Microsoft 365 and Entra ID, endpoint management, virtualization and servers, networking, cloud platforms, scripting, or business applications.
• Working knowledge of PowerShell and networking fundamentals (DNS, DHCP, VLANs, VPN, and firewalls).
• Strong customer service skills and clear written communication.
• Must be a U.S Citizen

Preferred Certifications

• CompTIA A+CE, Network+CE, or Security+CE
• ITIL 4 Foundation or newer
• Relevant Microsoft certifications such as MD-102 (Endpoint Administrator).
• Willingness to obtain relevant certifications as needed

Salary Range - $60,000 - $90,000

SMS is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.