Note: The job is a remote job and is open to candidates in USA. Tier4 Group is a rapidly growing healthcare-focused technology organization seeking a Senior Network Security Engineer. The role involves architecting and supporting secure network infrastructures across multi-site healthcare environments, while leading Zero Trust initiatives and representing the engineering team in high-visibility meetings. Responsibilities • 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, SonicWall, Meraki) across diverse environments • Lead Zero Trust initiatives, including: • ZTNA • Network Access Control (NAC) • Micro‑segmentation • VPN reduction & identity‑based access strategies • 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 NetFlow, Auvik, and firewall telemetry • Execute projects ranging from small firewall upgrades to large-scale deployments involving: • 50–70 switches • 400–500 access points • Multiple redundant firewalls • Support technology refreshes across newly onboarded communities with widely varying equipment and configurations • 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 • 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 Skills • 7+ years of senior-level network + security engineering experience • Strong multi-vendor background — Cisco, Meraki, Palo Alto, Fortinet, SonicWall, Ubiquiti, Ruckus, etc • Deep knowledge of: Routing & switching, VLAN segmentation & VRFs, QoS, DNS, NAT, 802.1X, RADIUS, EAP-TLS, 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) • Outstanding communication skills with the ability to converse confidently with senior IT executives • Highly self-managed — able to operate remotely with limited oversight • 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, SonicWall, Meraki) across diverse environments • Lead Zero Trust initiatives, including: ZTNA, Network Access Control (NAC), Micro-segmentation, VPN reduction & identity-based access strategies • 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 NetFlow, Auvik, and firewall telemetry • Execute projects ranging from small firewall upgrades to large-scale deployments involving: 50–70 switches, 400–500 access points, Multiple redundant firewalls • Support technology refreshes across newly onboarded communities with widely varying equipment and configurations • 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 • 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 Company Overview • Tier4 Group is a women-owned and diversity-certified technology Talent, Professional Services, Advisory, and Information Security firm with a national reach. It was founded in 2010, and is headquartered in Alpharetta, Georgia, USA, with a workforce of 201-500 employees. Its website is