Senior IT​/System Administrator

Position Overview

Our Senior IT / System Administrators & Network Engineers hold a wealth of knowledge regarding complex LAN and WAN network infrastructure. They are able to provide the highest level of network system maintenance and support and are expected to have leading-class knowledge of hardware, software, networking, and security. A Senior Systems & Network Engineer should have years of experience working in the field and should have a strong background in customer service and team leadership.

Individuals must possess excellent technical and troubleshooting skills and must also have outstanding personal skills as working closely with customers is imperative.

Note: This position is an on-site position. We may consider qualified candidates who are located within Iowa for a flexible work setup. Candidates outside of Iowa will be required to relocate to the Iowa Great Lakes region.

• Communicate effectively with customers on both a technical and non-technical level.
• Work as part of a team as well as work unsupervised.
• Strive to constantly learn new technology and devices.
• Be motivated and self‑managed.
• Often travel to customer locations to directly work with customers and resolve issues on‑site.

• Identify, propose, design, and deliver appropriate infrastructure upgrades/projects for customers to enable a more productive, secure, and stable environment in line with best‑in‑class IT practices.
• Meet with new customers to discuss their challenges and goals, and work with them to develop plans to address those challenges and to reach their goals, while still maintaining secure baselines and adhering to best practices.
• Design complex LAN and WAN infrastructure.
• Install, configure, repair, maintain, troubleshoot, and diagnose PCs, servers, virtualization infrastructure, network switches, routers, firewalls, wireless access points, network software, VLANs, VPNs, and nearly any high‑level issue that may occur in the enterprise.
• Respond to network alerts and customer issues to remediate issues in an efficient manner.
• Expediently answer customer calls, diagnose issues, respond quickly, and complete the service loop.
• Work with Level 2 Computer Network Technician to determine server and other equipment specifications for customer projects.
• Specify accurate time and material requirements for large‑scale customer projects such as facility expansions and virtualization implementations.
• Design and implementation of new Windows Server‑based infrastructure.
• Management, deployment, and troubleshooting of Active Directory and Group Policies.
• Management, deployment, and troubleshooting of varied email systems, such as Office 365.
• Detailed troubleshooting of email flow issues, where a strong knowledge of DNS is required.
• Carefully organize customer documentation through project life cycles.
• Service auditing, for example:
• Periodically validate backups are configured to back up all data on all volumes, at specified intervals, and to all appropriate media.
• Periodically validate firewall rules do not allow unnecessary traffic inbound or outbound.
• Periodically validate that all machines on the network meet the specified baseline security settings.
• Test and implement new technologies for in‑house as well as customer facilities.
• Implement monitoring and automation for various systems using in‑house and third‑party platforms.
• LAN and WAN design, including implementation of VLANs and VPNs.

• Server operating systems, up to Windows Server 2025
• Microsoft Active Directory, including group policies
• DNS, HTTP, HTTPS, SNMP, SMTP, POP3, IMAP, as well as other protocols
• DNSSEC, SPF, DMARC, DKIM
• Ethernet, VLANs, VPNs, switching, and routing
• Wireless networking 802.11ac/ax/be
• Server virtualization using VMWare, vCenter, and ESXi
• NAS devices, security, and configuration
• Physical network infrastructure, including cabling standards

• Thorough understanding of Microsoft SQL, Microsoft Exchange / Office 365, Microsoft Teams
• SAN (Storage Area Networks), iSCSI, SAN management, LUN configuration & management (Dell Power Store / HPE Alletra)
• Scripting for the purposes of automation, such as…