Networking Security Engineer (R-00236)

Truezerotech; Ashburn (VA); On-site; USD 130,000 - 195,000; Full time

Benefits offered by this job

Competitive salary

Best medical coverage

100% medical premiums covered

401k with company match

PTO 3 weeks + 11 holidays

Cell phone and home internet reimburse

Paternity/Maternity Leave

Training and certifications

Job summary

True Zero Technologies is seeking a Senior Network Security Engineer to lead architectural reviews, oversee LAN/WAN security, and guide the deployment of cloud-network and SD-WAN security standards. You will administer security tools, assist in investigations, and drive policy development across the organization.

The role requires 7+ years of experience, advanced firewall/IDS/IPS expertise, and a track record of technical leadership in security projects.

Qualifications

• Minimum 7 years of relevant network security, network engineering, cybersecurity engineering, or security-tool administration experience.
• Advanced experience with LAN and WAN security, cloud networking, firewall architecture, IDS and IPS, SIEM integrations, CDM tools, network sensors, and security investigations.
• Active certifications listed (CompTIA Security+ and Network+; Cisco CCST Networking or Cybersecurity or CCENT; Palo Alto PCCSA; Juniper JNCIA-Junos; AWS Cloud Practitioner). Preferred: CCNA/CCNP and AWS Advanced Networking Specialty.

Responsibilities

• Lead reviews of network security architectures, designs, firewall requests, trust-zone transfers, and security controls for least privilege and policy compliance.
• Lead development and maintenance of LAN, WAN, cloud-network, SD-WAN, and ACI security standards, diagrams, designs, and transition documentation.
• Administer, configure, tune, secure, and sustain network security tools, devices, sensors, IDS/IPS, SIEM feeds, firewalls, proxies, and CDM capabilities.
• Support security investigations, incident containment and recovery, troubleshooting, and root-cause analysis for network-related issues.
• Identify network security and performance gaps, recommend corrective action, and conduct alternatives analyses, trade studies, and technology evaluations.
• Develop network security policies, awareness materials, training, signature-management records, maintenance reports, and performance reports.

Skills

LAN/WAN security

Cloud networking

Firewall architecture

IDS/IPS

SIEM integrations

Network security tools

Education

CompTIA Security+

CompTIA Network+

Cisco CCST Networking or Cybersecurity or CCENT

Palo Alto PCCSA

Juniper JNCIA-Junos

AWS Cloud Practitioner

Tools

CDM tools

Network sensors

IDS/IPS devices

Job description

True Zero Technologies, a veteran-owned small business, was founded on the principle that the purposeful enablement of people and technology in an organization directly ties to the quality of its outcomes. True Zero recognizes that those outcomes begin and end with our people, and that is what we have built a community of like-minded, driven, and passionate individuals and innovators who are aligned in a common goal of delivering top-tier services to our customers. Our culture and commitment have been recognized through numerous accolades, including being named one of the Best Places to Work in 2023 in two categories ("Prosperous and Thriving" ($5MM–$50MM in gross revenue) and "Mid-Atlantic Region" (DC, DE, MD, NC, VA, WV)), and again in 2025 as a Best Places to Work honoree. In addition, True Zero earned coveted spots on the Inc. 5000 list of fastest-growing companies in America in 2022, 2023, and 2025, a testament to our sustained growth driven by our people-first approach and unwavering dedication to excellence.

The Network Security Engineer Senior leads complex network security architecture, engineering, tool sustainment, and analysis for CBP. The engineer provides senior review of network and firewall designs, directs resolution of security and performance issues, and develops technology recommendations for Government leadership.

• Lead reviews of network security architectures, designs, firewall requests, trust-zone transfers, and security controls for least privilege and policy compliance.
• Lead development and maintenance of LAN, WAN, cloud-network, SD-WAN, and ACI security standards, diagrams, designs, and transition documentation.
• Administer, configure, tune, secure, and sustain network security tools, devices, sensors, IDS/IPS, SIEM feeds, firewalls, proxies, and CDM capabilities.
• Support security investigations, incident containment and recovery, troubleshooting, and root-cause analysis for network-related issues.
• Identify network security and performance gaps, recommend corrective action, and conduct alternatives analyses, trade studies, and technology evaluations.
• Develop network security policies, awareness materials, training, signature-management records, maintenance reports, and performance reports.

• Minimum 7 years of relevant network security, network engineering, cybersecurity engineering, or security-tool administration experience.
• Advanced experience with LAN and WAN security, cloud networking, firewall architecture, IDS and IPS, SIEM integrations, CDM tools, network sensors, and security investigations.
• PWS minimum certifications: CompTIA Security+ and Network+; Cisco CCST Networking or Cybersecurity or CCENT; Palo Alto PCCSA; Juniper JNCIA-Junos; and AWS Cloud Practitioner. Active higher-level certifications may support a waiver.
• Preferred certifications include Cisco CCNA or CCNP and AWS Advanced Networking Specialty.
• Demonstrated ability to lead architecture reviews, alternatives analyses, trade studies, root-cause investigations, technology insertion recommendations, policy development, and technical reporting.

We’re actively searching for talented security and technology practitioners who are ready to experience the True Zero difference. As a True Zero team member, you'll enjoy:

• Competitive salary, paid twice per month
• Best in class medical coverage
• 100% of medical premiums covered by True Zero
• Company wide new business incentive programs
• Contribution Incentives (i.e. white papers, blog posts, internal webinars, etc.)
• 3 weeks of PTO starting + 11 Paid Holidays Annually
• 401k Program with 100% company match on the first 4%
• Monthly reimbursement of Cell Phone and Home Internet costs
• Paternity/Maternity Leave
• Investment in training and certifications to broaden and deepen your technical skills