Senior Security Engineer

The Advertising Checking Bureau (ACB) is a powerhouse in channel marketing, managing over $6B in annual reward programs for 200+ leading brands. We specialize in Co-op Advertising, MDF Programs, Consumer Rebates, and Channel Spiff Programs across consumer and B2B markets. Our award-winning team of full‑time, U.S.

-based professionals delivers exceptional results through decades of experience and cutting‑edge analytics.

Defend the digital fortress that protects billions in channel marketing. As a Senior Network Security Engineer, you'll serve as ACB's primary technical authority for network defense and security operations. You'll design cutting‑edge security infrastructure, hunt threats before they strike, lead incident response, and ensure the integrity of systems serving 200+ leading brands. This is a hands‑on security expert role—not people management—allowing you to do what you do best: protect, detect, and respond.

• Design and deploy firewalls, VPNs, IDS/IPS, and zero‑trust architecture
• Monitor and analyze network traffic in real‑time to detect anomalies and breaches
• Conduct packet‑level analysis to investigate suspicious activity
• Hunt for threats proactively
• Serve as 24/7 escalation point for critical security alerts

• Execute monthly vulnerability scans using Nessus; prioritize remediation based on CVSS scoring
• Lead technical investigation and containment of security incidents as SME
• Execute containment, eradication, and recovery procedures during active breaches
• Conduct root cause analysis and maintain incident response playbooks
• Implement CIS Benchmark security configurations for Windows Server and network infrastructure
• Configure multi‑factor authentication for VPN, privileged access, and cloud services
• Manage privileged account access using PAM solutions with time‑limited access
• Deploy and maintain endpoint protection and EDR capabilities

• Collect and provide technical evidence for SOC 1, SOC 2, and compliance audits
• Document technical controls
• Provide expert guidance and technical mentorship to junior IT staff

• Bachelor's degree in Cybersecurity, Information Security, Computer Science, or related field (or equivalent experience)
• Certifications: CISSP, CCNP Security, CEH, or CompTIA Security+ (one or more required)
• 5+ years in network security with hands‑on experience designing enterprise security solutions
• Firewall Expertise: Forti Gate (strongly preferred), Palo Alto, Cisco ASA/Firepower
• Packet Analysis: Wireshark, tcpdump, network protocol analysis
• Vulnerability Management: Nessus, Qualys, Rapid7, or OpenVAS
• Endpoint Security: EDR platforms (Crowd Strike, Carbon Black, Defender ATP, Cortex XDR)
• Cloud Security: AWS, Azure, O365 security controls
• Identity & Access: Active Directory, LDAP, MFA solutions (Duo, Okta, Azure MFA), PAM
• Security Frameworks: NIST 800-53, ISO 27001/27002, CIS Controls, MITRE ATT&CK
• Scripting: Power Shell, Python, or Bash for security automation

• Experience with penetration testing or red team operations
• Prior experience in regulated or audited environments (SOC 2, PCI, ISO)
• SIEM platform and log analysis experience

• Security‑first mindset—you think like an attacker
• Proactive threat hunter who doesn't wait for alerts
• Continuous learner who stays current with emerging threats

Join a pivotal role where your security expertise directly protects how 200+ Fortune 500 brands manage billions in channel marketing programs. Report directly to the IT Network and Infrastructure Manager and enjoy hybrid flexibility in Memphis, TN
. Participate in on‑call rotation as the primary technical responder for security incidents, with the authority to immediately block malicious traffic and implement emergency security measures during active attacks.

• Ready to defend the infrastructure that powers channel marketing's biggest programs? Apply today and become ACB's security guardian.