Infrastructure Administrator

3X Trifecta Growth•Allentown, PA

3d•Hybrid

About The Position

We are seeking a highly motivated and detail-oriented Infrastructure Administrator to manage and support Trifecta and client on-prem and cloud-based infrastructure. This role is responsible for maintaining secure, reliable, and scalable systems across physical, virtual, and cloud environments. The ideal candidate is proactive, solutions-focused, and comfortable working in a fast-paced environment with multiple priorities. This is a hybrid role.

Requirements

Primary residence within 2 hours of Allentown, PA
Bachelor’s degree in Information Technology, Computer Science, or related field
7+ years of Network or Systems Administration experience
7+ years of Microsoft 365 and/or Azure administration
Advanced networking certifications such as CCNA, CCNP, Fortinet NSE, or equivalent
Microsoft certifications (AZ-104, MS-102, etc.)
Experience in a Managed Services (MSP) environment
Excellent troubleshooting and problem-solving skills

Responsibilities

Administer Windows Server environments (Active Directory, DNS, DHCP, GPO)
Manage multi-site virtualization platforms (VMware / Hyper-V / ProxMox)
Maintain file servers, print services, and core routing services
Provide technical administration of enterprise switches (Aruba, Fortinet, Unifi, Dell)
Provide technical support and maintenance of campus fiber (single and multi-mode), Cat6, etc.
Advanced knowledge of TCP/IP, SNMP, 802.11, VoIP, and PoE, DNS, DHCP, VLANs, and routing protocols (BGP, OSPF, RIP, etc.)
Expert knowledge of SAN technologies (Dell, Synology, etc.)
Monitor system performance, availability, and capacity
Perform patch management and system upgrades
Manage backups and disaster recovery processes
Experience with backup solutions and disaster recovery
Knowledge of network automation and scripting (PowerShell, Python, etc.)
Familiarity with Jira or Freshdesk ticketing systems, and IT documentation platforms
Administer Microsoft 365 (Exchange Online, SharePoint, Teams, OneDrive)
Manage hybrid Microsoft environments (Azure AD, Entra ID, Intune, VMs, storage)
Support hybrid hosting environments and cloud connectivity (site-to-site VPN, SD-WAN, direct connections)
Configure and monitor cloud security and compliance controls
Experience with Intune or similar MDM management platforms for Apple and Windows devices
Implement CrowdStrike and ESET endpoint protection and security best practices
Maintain DUO and Microsoft MFA, conditional access policies, and role-based access control
Conduct regular CrowdStrike and Nessus vulnerability remediation
Ensure systems meet internal and regulatory compliance requirements
Knowledge of monitoring tools (Zabbix, Nagios, SolarWinds, PRTG, etc.)
Experience with enterprise firewalls and security technologies
Knowledge of cybersecurity frameworks and best practices
Provide Tier 2/3 technical support
Troubleshoot complex infrastructure and cloud-related issues
Document systems, processes, and procedures
Collaborate with vendors and internal stakeholders