Sr. Network Security Engineer​/Remote​/Local Field Support

Position: Sr. Network Security Engineer – Direct Hire/Remote/Local Field Support 4755 Sr. Network Security Engineer – Direct Hire/Remote/Local Field Support 4755 Healthcare Infrastructure | Zero Trust | Multi‑Vendor | High‑Visibility Role Locations: Des Moines (Executive level local field support will be required) About the Role Tier4 is looking for a Senior Network Security Engineer who thrives in complex, multi‑vendor environments and loves turning chaotic networks into beautifully stable, secure architectures. If you enjoy solving real-world networking challenges, owning high‑impact projects, and representing engineering in executive‑level conversations, this role is for you. This position supports a rapidly growing healthcare‑focused technology organization, where uptime is everything and no two networks look the same. You’ll operate with autonomy, authority, and visibility — especially in Des Moines , home to the organization’s largest and most strategically important client. What You’ll Do Network Engineering & Security Leadership • Architect, deploy, and support LAN/WAN and wireless networks across multi‑site healthcare environments (Ubiquiti, Meraki, Cambium, Aruba, Cisco, Ruckus). • Configure and maintain next‑gen firewalls (Palo Alto, Fortinet, Sonic Wall, Meraki) across diverse environments. • Lead Zero Trust initiatives, including: • ZTNA • Network Access Control (NAC) • VPN reduction & identity‑based access strategies Advanced Troubleshooting & Escalation • Serve as Tier 3 escalation (approx. 70% of workload). • Diagnose and resolve high-impact issues including spanning tree loops, routing anomalies, physical mispatch events, rogue devices, and wireless instability. • Perform deep traffic analysis, packet captures, and threat analytics using Net Flow, Auvik, and firewall telemetry. • Execute projects ranging from small firewall upgrades to large‑scale deployments involving: • 50–70 switches • 400–500 access points • Support technology refreshes across newly onboarded communities with widely varying equipment and configurations. Client Interaction & Executive Presence • Represent the Network Engineering function in high‑visibility meetings , especially at the Des Moines corporate headquarters. • Interface with IT Directors, CIOs, CTOs, and virtual IT leaders — requiring exceptional communication and professionalism. • Partner with community‑level leadership (Chicago) and internal NOC teams (Alpharetta) as needed. Documentation & Standards • Maintain network baselines, configuration repositories, documentation, and disaster‑ready backups. • Contribute to SIEM integrations and ongoing hardening of the security posture. • Mentor L2/L3 engineers and help level up team capability. Technical Expertise • 7+ years of senior‑level network + security engineering experience. • Deep knowledge of: • Routing & switching • QoS, DNS, NAT • IDS/IPS, DNS filtering, gateway security layers • Experience with Auvik or similar monitoring and packet capture tools. • Ability to operate effectively in environments with limited physical control (mispatching, unmanaged local changes, etc.). • Broad familiarization with adjacent IT domains (Windows servers, infrastructure, general enterprise systems). Soft Skills • Outstanding communication skills with the ability to converse confidently with senior IT executives. • Highly self‑managed — able to operate remotely with limited oversight. #J-18808-Ljbffr Apply tot his job

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