Cyber Security Engineer - Network & Email Defense Lead

Quantum Technologies. LLC; Atlanta (GA); On-site; USD 77,000 - 110,000; Full time

Job summary

Quantum Technologies. LLC is seeking a seasoned Cyber Security Engineer in Atlanta to join a 12-month engagement.

The role focuses on hands-on network security, NGFW management, NDR, NAC, and email security, with responsibilities spanning design, implementation, and incident response. The ideal candidate will lead complex L3 escalations, coordinate with offshore teams, and implement DMARC/DKIM/SPF, alongside firewall policy, VPN, SASE, and high availability configurations in a fast-paced

Qualifications

• Experience with Next-Generation Firewalls and Palo Alto networks.
• Hands-on expertise in Network Detection and Response (NDR) and Network Access Control (NAC).
• Experience implementing and auditing DMARC, DKIM, and SPF configurations.
• Ability to lead Level 3 security escalations and coordinate offshore teams.
• Willingness to work on US-based contract roles and security operations.

Responsibilities

• Manage and troubleshoot Palo Alto Next-Generation Firewalls (NGFW).
• Work with Palo Alto Panorama, GlobalProtect, and Prisma Access.
• Handle firewall policies, VPN, SASE, high availability (HA), patching, and troubleshooting.
• Implement and support NDR solutions such as Darktrace, Gigamon, or equivalent platforms.
• Manage network traffic visibility using SPAN/TAP and investigate potential threats.
• Design, implement, and enforce NAC solutions using Forescout, Cisco ISE, or Aruba ClearPass.
• Manage email security solutions such as Proofpoint or equivalent platforms.
• Investigate phishing and malware incidents and perform email threat remediation.
• Implement and manage DMARC, DKIM, and SPF configurations.
• Independently handle complex Level 3 security escalations.
• Provide technical direction and oversight to offshore teams.
• Identify security gaps and recommend improvements to security infrastructure.

Skills

Network Security

NGFW

NDR

NAC

Email Security

Threat Remediation

L3 Escalations

Offshore Coordination

Tools

Palo Alto NGFW

Panorama

GlobalProtect

Prisma Access

Darktrace

Gigamon

Forescout

Cisco ISE

Aruba ClearPass

Proofpoint

DMARC/DKIM/SPF configurations

SPAN/TAP

Job description

Quantum Technologies. LLC is seeking a seasoned Cyber Security Engineer in Atlanta to join a 12-month engagement.

The role focuses on hands-on network security, NGFW management, NDR, NAC, and email security, with responsibilities spanning design, implementation, and incident response. The ideal candidate will lead complex L3 escalations, coordinate with offshore teams, and implement DMARC/DKIM/SPF, alongside firewall policy, VPN, SASE, and high availability configurations in a fast-paced