Network Security Engineer
US$207,000 – US$320,000 / yr base salary
Posted 29 Sep 2026
Advertised as “Sr. Network Security Engineer III (6852)”
BranchFactor Summary
The original posting with the fluff stripped out
- Level
- III
- Expected experience
- 10+ yrs
- Management level
- Individual contributor
| Base salary | US$207,000 – US$320,000 / yr |
|---|
CertificationsSecurity+, PCNSE, Network Security Professional, Network+, Cloud+, SSCP, CASP+, CISSP, CCNP Security
Field of studyTechnical Field
Study levelBachelor's
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.
We know that you can’t have great technology services without amazing people. At MetroStar, we are obsessed with our people and have led a two-decade legacy of building the best and brightest teams. Because we know our future relies on our deep understanding and relentless focus on our people, we live by our mission: A passion for our people. Value for our customers.
If you think you can see yourself delivering our mission and pursuing our goals with us, then check out the job description below!
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.