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Senior Network Security Engineer

  • Senior Network Security Engineer job type Posted on: Nov 04, 2026
  • Senior Network Security Engineer experience level ZipStaff Inc.
  • Senior Network Security Engineer employment type Washington, District of Columbia
  • Senior Network Security Engineer employment type Onsite
  • Senior Network Security Engineer salary Full-time
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Job Title :

Senior Network Security Engineer

Job Type :

Full-Time

Job Location :

Washington District of Columbia United States

Remote :

No

Jobcon Logo Job Description :

View Full Description

Job Description

Job Description
Job Title: Senior Network Security Engineer
Location: Washington, DC (Onsite)
Employment Type: W2 Contract
Duration: 11 months

About the Opportunity:
ZipStaff is hiring a Senior Network Security Engineer for our client, a major U.S. passenger rail transportation organization based in Washington, DC. As a technical leader, you will design, implement and optimize perimeter and infrastructure security controls across on-premises networks and AWS/Azure, with a heavy focus on Palo Alto Networks firewalls.

What You'll Do:
  • Lead design, configuration, rule maintenance and optimization of enterprise Palo Alto firewalls and perimeter platforms.
  • Maintain WAF, IDS/IPS, VPN and NAC technologies.
  • Partner with cloud, network and application teams on secure AWS and Azure architectures.
  • Respond to network security incidents, monitor via SIEM, perform threat hunting and root-cause investigations.
  • Conduct security reviews and risk assessments aligned with NIST, CIS, PCI-DSS, HIPAA and ISO.
  • Automate security tasks with Python, PowerShell or Bash.
  • Maintain runbooks, network diagrams and SOPs.
  • Mentor junior engineers and support maintenance windows, after-hours work and emergency response.

Required Qualifications:
  • Bachelor's in Cybersecurity, Computer Science, IT, Engineering or related field.
  • 11+ years of cybersecurity engineering focused on enterprise network and firewall security.
  • Advanced hands-on Palo Alto Networks firewall administration.
  • Deep knowledge of TCP/IP, routing, switching, VPNs, WAN/LAN and perimeter defense.
  • Experience with IDS/IPS, SIEM, EDR, DLP, CASB and WAF.
  • Securing AWS and Azure cloud infrastructure.
  • Scripting in Python, PowerShell or Bash.
  • Understanding of NIST, CIS Controls, PCI-DSS, HIPAA and ISO 27001.
  • Strong problem-solving, communication and stakeholder skills.

Nice to Have:
  • Master's degree in Cybersecurity or IT.
  • PCNSE, CISSP, CCNP Security, GIAC, CEH or Security+.
  • SOC experience.
  • Zero Trust architectures and cloud-native security tools.

Benefits:
  • Health Insurance.
  • Dental Insurance.
  • Vision Insurance.
  • 401(k) + 401(k) matching.
  • Paid time off.
  • Referral Program.

About ZipStaff:
ZipStaff connects skilled technology professionals with leading organizations across the United States, matching top talent with impactful contract and full-time opportunities. To apply, submit your resume through this posting. Qualified candidates will be contacted by a ZipStaff recruiter.

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Jobcon Logo Position Details

Posted:

Nov 04, 2026

Reference Number:

e04ae905

Employment:

Full-time

City:

Washington

Job Origin:

ziprecruiter

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Job Description

Job Description
Job Title: Senior Network Security Engineer
Location: Washington, DC (Onsite)
Employment Type: W2 Contract
Duration: 11 months

About the Opportunity:
ZipStaff is hiring a Senior Network Security Engineer for our client, a major U.S. passenger rail transportation organization based in Washington, DC. As a technical leader, you will design, implement and optimize perimeter and infrastructure security controls across on-premises networks and AWS/Azure, with a heavy focus on Palo Alto Networks firewalls.

What You'll Do:
  • Lead design, configuration, rule maintenance and optimization of enterprise Palo Alto firewalls and perimeter platforms.
  • Maintain WAF, IDS/IPS, VPN and NAC technologies.
  • Partner with cloud, network and application teams on secure AWS and Azure architectures.
  • Respond to network security incidents, monitor via SIEM, perform threat hunting and root-cause investigations.
  • Conduct security reviews and risk assessments aligned with NIST, CIS, PCI-DSS, HIPAA and ISO.
  • Automate security tasks with Python, PowerShell or Bash.
  • Maintain runbooks, network diagrams and SOPs.
  • Mentor junior engineers and support maintenance windows, after-hours work and emergency response.

Required Qualifications:
  • Bachelor's in Cybersecurity, Computer Science, IT, Engineering or related field.
  • 11+ years of cybersecurity engineering focused on enterprise network and firewall security.
  • Advanced hands-on Palo Alto Networks firewall administration.
  • Deep knowledge of TCP/IP, routing, switching, VPNs, WAN/LAN and perimeter defense.
  • Experience with IDS/IPS, SIEM, EDR, DLP, CASB and WAF.
  • Securing AWS and Azure cloud infrastructure.
  • Scripting in Python, PowerShell or Bash.
  • Understanding of NIST, CIS Controls, PCI-DSS, HIPAA and ISO 27001.
  • Strong problem-solving, communication and stakeholder skills.

Nice to Have:
  • Master's degree in Cybersecurity or IT.
  • PCNSE, CISSP, CCNP Security, GIAC, CEH or Security+.
  • SOC experience.
  • Zero Trust architectures and cloud-native security tools.

Benefits:
  • Health Insurance.
  • Dental Insurance.
  • Vision Insurance.
  • 401(k) + 401(k) matching.
  • Paid time off.
  • Referral Program.

About ZipStaff:
ZipStaff connects skilled technology professionals with leading organizations across the United States, matching top talent with impactful contract and full-time opportunities. To apply, submit your resume through this posting. Qualified candidates will be contacted by a ZipStaff recruiter.

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