MetroStar Systems

Sr. Network Security Engineer III (6852)

MetroStar Systems • $207K — $320K *
Aerospace & Defense
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Active U.S. Government Issued Top Secret security clearance or higher
  • Technical certifications required: Security+ and one platform-specific certification
  • DoD 8140 certification related to Network Operations Specialist work role
  • 10+ years of enterprise network security experience
  • Bachelor's degree in a technical field preferred, experience may substitute

Responsibilities

  • Design, implement, and manage firewall, VPN, IPS, and NAC solutions
  • Secure network perimeters using defense-in-depth strategies
  • Respond quickly to security incidents and vulnerabilities
  • Support continuous security hardening of network infrastructure
  • Communicate security impacts and strategies to stakeholders
  • Participate in Agile technical planning and security discussions
  • Establish high levels of customer trust and confidence

Benefits

  • Health, dental, and vision insurance
  • 401(k) retirement plan with company match
  • Paid time off (PTO) and holidays
  • Parental Leave and dependent care
  • Flexible work arrangements
  • Professional development opportunities
  • Employee assistance and wellness programs
Full Job Description
As a Sr. Network Security Engineer III, you'll provide hands-on expertise securing mission-critical networks for a high-visibility customer with the goal of making an impact across the federal government. Our team is responsible for designing, operating, and hardening complex security environments, and you'll play a critical role in strengthening, scaling, and protecting these environments while enabling secure mission delivery across the organization.

What you'll 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
  • Apply creativity and engineering judgment to deliver practical, mission-focused security solutions
  • 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 and managing firewall rule sets, VPN tunnels, and security policies in mission-critical environments.
  • Hands-on experience with at least one enterprise security platform, such as Palo Alto Networks, Fortinet, or 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.
  • Ability to contribute immediately with minimal ramp-up in a mission-critical operational environment.

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.

SALARY RANGE: $207,000 - $320,000

The salary range for this position is determined based on qualifications, skills, and relevant experience. The final salary offered will be determined based on several factors including:
  • The candidate's professional background and relevant work experience
  • The specific responsibilities of the role and organizational needs
  • Internal equity and alignment with current team compensation
  • This role is also eligible for additional compensation, subject to the terms and policies of MetroStar, which may include:
    • Performance-based bonuses
    • Company-paid training and/or certifications
    • Referral bonuses


Application Deadline: Applications will be accepted on a rolling basis until the position is filled; candidates are encouraged to apply as early as possible for full consideration.

Additional Compensation: This role may also be eligible for bonuses and/or additional incentives based on individual and company performance.

Benefits: All full-time employees are eligible to participate in our benefits programs:
  • Health, dental, and vision insurance
  • 401(k) retirement plan with company match
  • Paid time off (PTO) and holidays
  • Parental Leave and dependent care
  • Flexible work arrangements
  • Professional development opportunities
  • Employee assistance and wellness programs

About MetroStar Systems

MetroStar Systems is a technology services provider specializing in digital transformation, cybersecurity, and customer experience. The company was founded in 1999 and is headquartered in Washington, DC. MetroStar Systems has worked with clients in the public and private sectors, including the Department of Defense, the Department of Homeland Security, and the Federal Aviation Administration. The company has received numerous awards for its work, including being named a Top Workplace by The Washington Post.
Learn more about MetroStar Systems
Size
400 employees
Industry
Net Income
$2 million
Founded
1999
5 Year Trend
+20%
Revenue
$50 million

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