Network & Infrastructure Administror

Engineered Seal Products•Cedar Rapids, IA

11d•Onsite

About The Position

The Network & Infrastructure Administrator is responsible for supporting, maintaining, securing, and continuously improving Engineered Seal Products’ global network and infrastructure environment. This role helps ensure reliable connectivity, secure access, and high availability across branch locations, cloud environments, remote users, and business-critical systems. This is a hands-on technical position with a primary emphasis on network administration, including Azure cloud networking, SD-WAN, WAN and LAN connectivity, Azure ExpressRoute, client VPN, firewalls, wireless infrastructure, routing, switching, network segmentation, and provider-managed network services. The position also contributes to shared infrastructure responsibilities, including Microsoft 365, Microsoft Azure, identity systems, endpoint connectivity, monitoring, documentation, and operational troubleshooting. The Network & Infrastructure Administrator works closely with systems administrators, support personnel, service providers, and other stakeholders to support infrastructure, security, compliance, and operational initiatives.

Requirements

Strong WAN and LAN networking fundamentals, including routing, switching, VLANs, subnetting, segmentation, DNS, DHCP, IP addressing, and L2/L3 troubleshooting
Hands-on experience administering and troubleshooting firewalls, NAT, access policies, security zones, site-to-site VPNs, and client VPN technologies
Experience supporting wireless infrastructure, remote access, branch connectivity, and multi-site network availability
Working knowledge of Azure networking, including virtual networks, subnets, route tables, network security groups, cloud connectivity, and hybrid access patterns
Ability to monitor network performance, respond to alerts, troubleshoot packet flow and latency issues, identify root causes, and implement corrective actions
Familiarity with Microsoft 365, Active Directory, Microsoft Entra ID, multifactor authentication, Conditional Access, and secure remote-access concepts
Understanding of secure administration practices, including hardened configurations, logging, vulnerability remediation, and incident response support
Strong technical documentation skills, including network diagrams, configuration records, standards, procedures, and troubleshooting notes
Experience supporting and troubleshooting end-user connectivity, Microsoft 365, authentication, remote access, and infrastructure-related service requests
Bachelor’s degree in Information Systems, Computer Science, Information Technology, Network Administration, Cybersecurity, or a related field; or an equivalent combination of education, certifications, and relevant professional experience
Five or more years of progressive experience in network administration, infrastructure support, systems administration, cybersecurity operations, or a related information technology role

Nice To Haves

Experience supporting or administering SD-WAN in a production business environment
Experience with Azure ExpressRoute, hybrid networking, cloud-to-site connectivity, or segmented cloud network design
Experience supporting a multi-branch, distributed, or international organization
Experience with enterprise firewall platforms, centralized firewall management, security policy reviews, and firewall-rule cleanup
Experience with infrastructure monitoring, centralized logging, vulnerability management, or alert-tuning platforms
Exposure to NIST SP 800-171, CMMC, CUI handling requirements, customer security requirements, or comparable cybersecurity frameworks
Experience coordinating with ISPs, telecommunications carriers, managed service providers, consultants, or cybersecurity vendors
Experience with PowerShell, scripting, automation, or infrastructure as code
Relevant certifications, such as CCNA, Network+, Security+, Microsoft Azure certifications, firewall vendor certifications, or equivalent practical experience

Responsibilities

Administer, monitor, and troubleshoot ESP’s WAN, LAN, SD-WAN, wireless, routing, switching, VLAN, subnetting, segmentation, and remote-access infrastructure across branch locations, cloud environments, and remote users
Manage secure network connectivity and access controls, including firewalls, NAT, site-to-site VPNs, client VPNs, security zones, wireless security, administrative access, and least-privilege access practices
Support Azure networking and hybrid connectivity, including virtual networks, subnets, route tables, network security groups, Azure ExpressRoute, cloud-to-site connectivity, and access to Microsoft 365 and other cloud services
Maintain reliable access to business-critical systems, including ERP platforms, Microsoft cloud services, branch systems, third-party connections, and remote-user resources.
Monitor network availability, performance, latency, capacity, and alerts
Investigate recurring incidents, perform root-cause analysis, and implement durable corrective actions
Maintain accurate network diagrams, IP address records, firewall and VPN documentation, circuit and provider information, configuration standards, troubleshooting notes, and operational procedures
Plan and implement network changes using appropriate testing, documentation, communication, and change-management practices
Collaborate with MIS team members, ISPs, carriers, vendors, consultants, and managed service providers on support escalations, outages, infrastructure changes, security improvements, compliance activities, and project work
Provide Tier 2 technical support for network, connectivity, Microsoft 365, identity, and infrastructure-related issues; collaborate with support personnel on escalations, root-cause analysis, and issue resolution
Support end-user technology initiatives including office moves, onboarding activities, connectivity troubleshooting, and operational support efforts as required
Participate in scheduled maintenance activities that may occasionally occur outside normal business hours