System Administrator

T12 Technologies•Baltimore City, MD

37d•Onsite

About The Position

T12 Technologies is seeking a skilled and service-driven System Administrator to manage and maintain our on-premises and cloud systems on-site at our Waldorf, Maryland office. This is a fully on-site role supporting an on-premises-inclusive environment—physical workstations and office IT, an on-premises Windows Server and Active Directory footprint, and the company network—alongside cloud workloads in Microsoft 365, Microsoft Azure, and Amazon Web Services (AWS), serving diverse federal, state, and healthcare clients. This is a hands-on, player-coach role: roughly 60% systems and cloud administration and 40% Tier 1–2 end-user support. You’ll keep mission-critical systems available, secure, and compliant while serving as a trusted technical resource to internal teams and client stakeholders.

Requirements

Hands-on administration experience across both AWS and Microsoft environments, including: AWS core services (EC2, S3, IAM, VPC, RDS, CloudWatch).
Microsoft 365, Microsoft Entra ID (formerly Azure AD), and hybrid identity environments.
Microsoft Intune and device compliance management.
Windows Server 2016–2022 and Windows 10/11.
Strong understanding of networking fundamentals (DNS, DHCP, VPN, firewalls, TCP/IP).
Familiarity with backup, monitoring, endpoint protection, and email security tools.
Proficiency with PowerShell and/or Bash scripting and automation.
Experience providing end-user help desk support and working within a ticketing/ITSM system.
Strong client communication skills and a professional, solutions-focused demeanor.
3+ years of experience in a system administration role supporting cloud and on-premises infrastructure.
Associate’s or Bachelor’s degree in Information Technology or a related field, or equivalent practical experience.
U.S. citizenship required.

Nice To Haves

Experience supporting federal, state, or healthcare clients and associated compliance frameworks.
Familiarity with Microsoft Defender for Endpoint, Entra Conditional Access, and Purview compliance tools.
Experience with infrastructure-as-code (Terraform, CloudFormation) and ITSM platforms (e.g., ServiceNow).
Eligibility for a Public Trust or government security clearance is preferred; clearance sponsorship may be available depending on client assignment.
Proactive, detail-oriented, and able to manage multiple priorities with minimal supervision.
Microsoft 365 Certified: Administrator Expert (MS-102).
Microsoft Certified: Azure Administrator Associate (AZ-104).
Microsoft Certified: Identity & Access Administrator Associate (SC-300).
Microsoft 365 Certified: Modern Desktop Administrator Associate (MD-102).
CompTIA Security+.
AWS Certified SysOps Administrator – Associate (or Cloud Practitioner).

Responsibilities

Provision, monitor, and maintain AWS services (EC2, S3, IAM, VPC, RDS, CloudWatch), including patching, backups, cost optimization, and security configuration.
Administer Microsoft 365 (Exchange Online, Teams, SharePoint, OneDrive), Microsoft Entra ID (Azure AD), Conditional Access, MFA, and Active Directory (users, groups, GPOs).
Manage device compliance, configuration, and application deployment through Microsoft Intune; support onboarding and offboarding of users and hardware.
Monitor system health, capacity, and performance; respond to alerts and resolve incidents to meet SLA commitments.
Perform routine patching, updates, backups, and disaster recovery testing across cloud and on-premises systems.
Implement and enforce access controls, configuration baselines, and security hardening aligned with frameworks such as NIST 800-171, HIPAA, and CIS (depending on client vertical).
Build and maintain PowerShell and/or Bash scripts to automate recurring administrative tasks and reporting.
Maintain system diagrams, SOPs, runbooks, and asset inventories; contribute to internal knowledge bases.
Serve as the primary point of contact for end-user issues; triage and resolve requests received by phone, email, ticketing system, and in person.
Diagnose and resolve issues with desktops, laptops, printers, peripherals, and mobile devices; image, configure, and deploy new equipment.
Troubleshoot phone systems (VoIP/softphone), conferencing, and Microsoft Teams calling—including handset setup, call routing, and voicemail issues.
Resolve local network problems such as Wi-Fi, LAN, VPN, DNS/DHCP, and router/switch/ISP connectivity; coordinate with carriers or vendors to escalate as needed.
Handle password resets, account lockouts, mailbox and shared-drive permissions, and software installation and licensing requests.
Log, track, and document all support activity in the ticketing system; follow up to ensure timely resolution and clear communication with users.
Set up and decommission user accounts, equipment, and access as employees join or leave the company.