Senior Systems Administrator – Onsite (Somerville, MA)

Alexander Technology Group

Somerville (MA)

On-site

USD 80,000 - 110,000

Full time

2 days ago

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Job summary

Alexander Technology Group is seeking an experienced Systems Administrator to join our client near Boston, MA. This onsite role requires hands-on management of Windows Server, AD, and hybrid infrastructure, with responsibilities spanning identity, security, and cloud services.

The ideal candidate will have strong troubleshooting skills, experience with MSP environments, and a proactive approach to system improvements.

Qualifications

3+ years of professional experience in a Systems Administrator or similar infrastructure-focused role.
Strong hands-on experience with Windows Server, Active Directory, Group Policy, and Microsoft Entra ID.
Experience administering Microsoft 365, Exchange Online, and Azure environments.
Solid understanding of networking fundamentals, including TCP/IP, DNS, DHCP, VPNs, firewalls, and routing.
Experience troubleshooting complex technical issues across servers, endpoints, applications, and network infrastructure.
Familiarity with endpoint management, patching, system monitoring, and backup solutions.
Strong technical documentation, troubleshooting, and problem-solving skills.
Excellent communication and customer service skills, with the ability to manage multiple priorities independently.
Experience supporting multiple environments or working within a Managed Service Provider (MSP) is strongly preferred.
U.S. citizenship is required due to contractual requirements.

Responsibilities

Administer, maintain, and troubleshoot Windows Server environments, including AD, GPO, DNS, DHCP, and file permissions.
Support Microsoft 365 and Azure environments, including Exchange Online, SharePoint, Entra ID, and hybrid identity configurations.
Manage user accounts, permissions, authentication, and access controls across cloud and on-premises systems.
Troubleshoot complex infrastructure, networking, server, and application issues, serving as an escalation point for technical support teams.
Configure, maintain, and troubleshoot networking equipment, firewalls, VPN connections, and wireless infrastructure.
Assist with server upgrades, migrations, patching, system deployments, and infrastructure improvement projects.
Monitor system performance, backups, and security tools to maintain reliable and secure operations.
Support endpoint management, device configurations, software deployments, and system updates.
Identify opportunities to streamline IT operations through PowerShell scripting and automation.
Maintain accurate technical documentation, system configurations, troubleshooting procedures, and support records.
Collaborate with internal teams and external partners to resolve technical issues and implement infrastructure improvements.
Assist with security initiatives, including endpoint protection, multifactor authentication, vulnerability remediation, and access management.