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Senior Network Security Engineer

Company:
3B Staffing LLC
Location:
Cumming, GA
Posted:
April 27, 2026
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Description:

Senior Network Security Engineer

Cumming, GA (Hybrid)

Contract

Category: IT Infrastructure - Security

GC, USC

Onsite Interview

Network security architecture, firewalls (20+), IDS/IPS, VPN, SIEM, IAM & authentication, TCP/IP, BGP, OSPF, LAN/WAN/WLAN, Azure & AWS cloud security, vulnerability management, domain controllers & DHCP, SaaS security (O365, Salesforce, Workday), zero-trust architecture.

Seeking a highly skilled Senior Network Security Engineer to support and strengthen our client's enterprise security environment. This role is responsible for driving network security strategy, implementing advanced security solutions, and ensuring a secure, scalable, and compliant infrastructure.

Responsibilities

Lead the design and implementation of network security architecture and long-term security roadmap

Manage and enhance enterprise security technologies including firewalls, IDS/IPS, VPNs, and cloud security platforms

Act as a Subject Matter Expert (SME) for deployment and configuration of new security solutions

Monitor network activity, systems, and logs using SIEM and vulnerability management tools

Support compliance initiatives, risk assessments, and enforcement of security policies

Oversee core network services such as domain controllers and DHCP

Contribute to system upgrades, integrations, and security-focused projects

Maintain clear documentation of configurations and procedures

Mentor junior engineers and provide technical guidance

Participate in on-call rotation as required Required Qualifications

Bachelor's degree in IT, Information Systems, Computer Science, or related field (Master's preferred)

10+ years of overall IT experience, with at least 5+ years in network security

Hands-on experience with firewalls, IDS/IPS, endpoint security, IAM, and authentication protocols

Strong understanding of networking protocols including TCP/IP, BGP, OSPF, VPN, LAN/WAN/WLAN

Experience managing large-scale environments with 20+ enterprise firewalls

Proficiency in cloud platforms such as Azure and AWS

Experience with SaaS platforms like Salesforce, Workday, and Office 365 Preferred

Expertise in cloud security and zero-trust architecture

Strong analytical and problem-solving abilities

Ability to work independently as well as in a team environment

Excellent communication skills with both technical and non-technical stakeholders

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