Sr. Network Security Engineer III (6852)

MetroStar, Washington, DC

What you will do

Design, implement, and manage firewalls, VPNs, IPS, and NAC solutions in mission-critical environments
Secure network perimeters and internal network segments using defense-in-depth strategies
Respond rapidly to security incidents, vulnerabilities, and operational needs with urgency and discipline
Support continuous security hardening and improvement of network infrastructure
Participate in Agile execution, technical planning, and security risk discussions
Communicate security impacts, risks, and mitigation strategies clearly to technical and non-technical stakeholders
Recommend and implement security architecture and operational improvements
Serve as a hands-on technical SME, contributing immediately with minimal ramp-up
Establish and maintain a high level of customer trust and confidence through reliable, secure delivery

All jobs

Sr. Network Security Engineer III (6852)

MetroStar, Washington, DC

Posted pay

$207K–$320K

a year

Compared with similar jobs

This base pay is above the median for senior security engineering jobs in other US places.

Median: $188K a year
Other jobs in the group: 333

We compare the middle of each posted range. This is base pay as posted. The group does not include this job.

Location: Washington, DC
Work type: Not given
Level: Senior
Experience: 10+ years
Posted: Sep 29, 2026
Last check: 6 h ago
Job type: Security engineering, Infra, platform & SRE

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MetroStar

Open tech jobs: 38
With posted pay: 100%
Median posted base: $166K–$202K

About MetroStar: funding, hiring and pay

MetroStar

About MetroStar: funding, hiring and pay

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What you will do

Design, implement, and manage firewalls, VPNs, IPS, and NAC solutions in mission-critical environments
Secure network perimeters and internal network segments using defense-in-depth strategies
Respond rapidly to security incidents, vulnerabilities, and operational needs with urgency and discipline
Support continuous security hardening and improvement of network infrastructure
Participate in Agile execution, technical planning, and security risk discussions
Communicate security impacts, risks, and mitigation strategies clearly to technical and non-technical stakeholders
Recommend and implement security architecture and operational improvements
Serve as a hands-on technical SME, contributing immediately with minimal ramp-up
Establish and maintain a high level of customer trust and confidence through reliable, secure delivery

What you need

What you’ll need to succeed

Active U.S. Government Issued Top Secret security clearance (or higher level classification).
Required technical certifications include Security+ and at least one platform-specific security certification, such as PCNSE/Network Security Professional or a Cisco security certification.
Possess DoD 8140 certification aligned to the 441 Network Operations Specialist work role, such as Network+, Security+, Cloud+, SSCP, CASP+, CISSP, or CCNP Security.
10+ years of experience in network engineering with a primary focus on enterprise network security infrastructure.
Demonstrated subject matter expertise designing, implementing, and managing next-generation firewalls, VPN solutions, intrusion prevention systems, and network access control platforms.
Hands-on experience securing network perimeters and internal network segments, including policy design, segmentation, and threat mitigation.
Operational experience deploying, managing, maintaining, and upgrading firewall rule sets, VPN tunnels, and security policies in mission-critical environments.
Deep hands-on experience managing, maintaining, and upgrading Palo Alto Networks enterprise security platforms, as well as working with Cisco security technologies.
Hands-on experience with Cisco ISE and Cisco ASA environments.
Hands-on experience with IDS and IPS solutions and endpoint configuration hardening in secure environments.
Experience supporting Zero Trust architectures and identity-centric network security patterns.
Bachelor’s degree in a technical field is preferred. Relevant experience may substitute for education requirements.
Ability to contribute immediately with minimal ramp-up in a mission-critical operational environment.

This position is designated as essential personnel supporting continuity of operations and may require work during government shutdowns, emergencies, or other critical situations.

What we want you to know

In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.

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Sr. Network Security Engineer III (6852)

What you will do

Sr. Network Security Engineer III (6852)

What you will do

What you need

What you’ll need to succeed

What we want you to know

Pay and benefits

Salary range: $207,000 - $320,000

Benefits: All full-time employees are eligible to participate in our benefits programs

About MetroStar

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Interview questions

MetroStar

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