Network Security Administrator – Full-Time (Remote, USA Shift)

Location:

Department:

Reports To:

Experience Required:

Position Summary

Network Security Administrator

The ideal candidate brings strong operational discipline, deep technical expertise, and a proactive mindset for preventing, detecting, and responding to threats.

Key Responsibilities

Network & Security Operations

• Administer and maintain Cisco firewalls, switches, and VPN gateways.
• Manage and monitor

  Cisco MXDR

  for real-time threat detection and response.
• Configure and maintain

  Cisco Email Threat Defense

  policies (phishing, spam, DLP).
• Manage

  Cisco Duo

  for MFA and identity-based access control.
• Administer

  Cisco Umbrella

  for secure web/DNS-layer protection and threat intelligence.
• Operate and maintain

  Cisco ISE

  for NAC, endpoint posture assessment, and policy enforcement.
• Implement and support

  Cisco SASE

  architecture for secure user-to-cloud connectivity.
• Conduct network and security audits, identify vulnerabilities, and implement corrective measures.
• Manage incident response and coordinate remediation steps.

Monitoring & Reporting

• Maintain and fine-tune security monitoring and alerting tools.
• Generate periodic reports on incidents, performance, and compliance.
• Liaise with Cisco TAC and service providers for escalations and resolutions.

Policies & Compliance

• Implement security controls aligned with

  NIST CSF

  and

  NIS 2.0

  .
• Support internal/external audits and maintain compliance documentation.
• Maintain detailed documentation for configurations, incidents, and SOPs.

Collaboration

• Partner with Infrastructure, Cloud, and Application teams for consistent security enforcement.
• Provide user awareness training and secure-practice guidance.

Required Qualifications

• Bachelor’s degree in IT, Computer Science, or equivalent experience.
• Minimum

  5 years

  of hands-on experience in network and security administration.
• Strong expertise with:
• Cisco MXDR, Cisco Email Threat Defense, Cisco Duo, Cisco SASE, Cisco ISE, Cisco Umbrella
• Cisco ASA / Firepower / Meraki devices
• Deep understanding of

  TCP/IP, VLANs, VPNs, DNS, DHCP, routing protocols

  .
• Familiarity with

  Microsoft 365

  and

  Azure AD

  integration with Cisco tools.
• Excellent troubleshooting, documentation, and communication skills.

Preferred Qualifications

• Cisco certifications (

  CCNP Security

  ,

  CCNA Security

  , or equivalent).
• Experience with

  SIEM tools

  and

  incident response

  .
• Knowledge of

  endpoint protection

  and

  cloud security platforms

  .
• Exposure to

  multi-site hybrid network

  environments.

Personal Attributes

• Highly detail-oriented and accountable.
• Calm and decisive during incident response.
• Passionate about learning and staying ahead of emerging threats.