Tier4 Group · 7 hours ago
Sr. Network Security Engineer (Onsite/Direct Hire) - 4757 ATL
Alpharetta, GA
Full-time
Onsite
Mid, Senior Level
$90K/yr - $115K/yr
7+ years expTier4 Group is a rapidly growing healthcare-focused technology organization, and they are seeking a Senior Network Security Engineer who thrives in complex, multi-vendor environments. The role involves architecting and supporting secure network infrastructures, leading Zero Trust initiatives, and interacting with senior IT executives.
Enterprise SoftwareSoftwareAppsInformation TechnologyCRMVirtual Reality
Hiring Manager
Vince Godfrey
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
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
Qualification
Required
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
Company
Tier4 Group
Tier4 Group is a women-owned and diversity-certified technology Talent, Professional Services, Advisory, and Information Security firm with a national reach.
201-500 employees
Funding
Current Stage
Growth StageLeadership Team
Betsy Robinson
Founder + CEO
Jake Sherrill
Partner
Recent News
2025-05-17
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