Senior Cybersecurity Engineer; Firewall & Network Security

What is the Mission?

MAJUS Consulting is seeking a Senior Cybersecurity Engineer to lead firewall and network security troubleshooting and optimization efforts. Following a critical 24-hour outage caused by a firewall misconfiguration, this role is essential to identifying vulnerabilities, strengthening network resilience, and aligning security architecture with Zero Trust principles. The mission is to secure and optimize infrastructure through proactive threat detection, policy refinement, and adherence to federal compliance standards.

• Troubleshoot firewall and network switch conflicts, identifying and resolving root causes of outages.
• Optimize firewall policies and access control lists (ACLs) to enforce Zero Trust Architecture.
• Implement and fine-tune Endpoint Detection and Response (EDR) solutions such as Crowd Strike, Sentinel One, or Microsoft Defender for Endpoint.
• Evaluate and integrate cloud security tools, including iBoss, Harmony Checkpoint, and Palo Alto Prisma Access.
• Ensure network security policies align with NIST, FedRAMP, and DHS CDM compliance frameworks.
• Conduct penetration tests and vulnerability assessments using tools such as Tenable, Qualys, or Splunk.
• Provide strategic recommendations and hands-on expertise for firewall configuration, intrusion prevention, and secure network design.

• Advanced knowledge of firewalls, network security, and intrusion prevention systems.
• Strong troubleshooting skills, particularly in resolving network switch and firewall conflicts.
• Proficiency in EDR tools and vulnerability management platforms.
• Familiarity with cloud security integrations and Zero Trust Architecture.
• In-depth understanding of certificate management and secure access control.
• Ability to interpret and apply federal cybersecurity frameworks to real-world environments.

• 8+ years of experience in cybersecurity, with a strong focus on firewall and network security.
• Hands-on experience with firewalls such as Palo Alto, Cisco ASA, and Fortinet.
• Proven experience in VLAN segmentation, secure switch configuration, and firewall hardening.
• Experience with misconfigured or expired certificates and secure remediation practices.
• Expertise in cloud security platforms including iBoss, Prisma Access, and Harmony Checkpoint.
• Familiarity with NIST, FedRAMP, and DHS CDM compliance.

• CISSP – Highly desirable due to the strategic level of responsibility.
• Additional certifications such as CEH, PCNSE, or CCSP are a plus.

• Must be eligible to work in secure federal environments.

Salary:TBD, based on experience.
Benefits:

• 401(k)
• Health, dental, and vision insurance
• Health savings account
• Paid time off
• Professional development support