Network Engineer

ManTech; Florida; On-site; USD 110,000 - 140,000; Full time

Job summary

ManTech seeks a motivated Network Engineer, Centrix, to join our team in Doral, FL. You will design, deploy, and maintain CENTRIXS enterprise network infrastructure and support Combined Federated Server/Combined capabilities.

The role requires a Bachelor’s or higher in a related field and 5+ years of enterprise experience, with strong routing/switching, VPNs, firewalls, and DoD STIG familiarity. Top secret clearance preferred or required.

Qualifications

• Minimum 5+ years in enterprise network engineering with related degree.
• Proven CENTRIXS network systems experience and cross-domain networks.
• Strong routing/switching background with VPNs and firewalls.
• Experience maintaining baselines and security patch schedules.
• Ability to communicate complex topology with documentation.

Responsibilities

• Design, deploy, configure, and maintain CENTRIXS enterprise network infrastructure.
• Manage routers, switches, firewalls, network crypto devices and cross-domain networks.
• Troubleshoot complex routing, switching, coalition data flows, and connectivity issues.
• Collaborate with cross-functional teams and coalition partners for secure interoperability.
• Perform routine maintenance, firmware upgrades, vulnerability patching, and configuration management.
• Maintain baselines and engineering documentation across CENTRIXS nodes.
• Recommend engineering improvements to enhance performance and security.

Skills

CENTRIXS networks

BGP/OSPF/EIGRP

VPNs

Firewall administration

Documentation management

Security patching

Education

Bachelor's degree in Network Engineering / CS / IT

Master's degree

Associate's degree

High school diploma

Tools

Cisco CCNA

CCNP Enterprise/Security

CompTIA Security+

Job description

MANTECH seeks a motivated, career and customer-oriented Network Engineer, Centrix to join our team in Doral, FL .

Responsibilities include but are not limited to:

• Designing, deploying, configuring, and maintaining enterprise network infrastructure supporting CENTRIXS Combined Federated Server/Combined (CFS/C) capabilities.

• Managing enterprise routers, switches, firewalls, network crypto devices, and cross-domain coalition network architectures.

• Troubleshooting complex network routing, switching protocols, coalition data flows, and hardware connectivity issues.

• Collaborating with cross-functional technical teams, coalition partners, and leadership to ensure secure multinational network interoperability.

• Conducting routine network maintenance, firmware upgrades, vulnerability patching, and configuration management controls.

• Maintaining system baselines, configuration management records, and engineering documentation across CENTRIXS network nodes.

• Recommending and implementing continuous engineering process improvements to enhance coalition network performance and security compliance.

Minimum Qualifications:

• Bachelor’s degree in Network Engineering, Computer Science, Information Technology, or a related field with 5+ years of experience in enterprise network engineering.

• OR a master’s degree and 3+ or more years of relevant experience

• OR an associate’s degree and 7+ or more years of relevant experience

• OR a high school diploma and 9+ or more years of relevant experience

• Proven experience configuring, administering, and troubleshooting CENTRIXS network systems, coalition WAN/LAN environments, or cross-domain networks.

• Strong background in enterprise routing/switching protocols (BGP, OSPF, EIGRP), VPNs, firewalls, and network access control.

• Experience maintaining network baselines, baseline documentation controls, and security patch deployment schedules.

• Experience creating, maintaining, and communicating complex technical engineering documentation and coalition network topology diagrams.

Preferred Qualifications:

• Relevant professional certifications such as Cisco Certified Network Associate (CCNA), Cisco Certified Network Professional (CCNP Enterprise/Security), or CompTIA Security+.

• Prior experience supporting U.S. Military Command operations, Combatant Command environments, or multinational coalition networks.

• Familiarity with DoD STIG compliance, automated vulnerability scanning tools (ACAS), and crypto key management (HAIPE/TACLANE).

• Demonstrated ability to collaborate effectively across multi-disciplinary engineering teams in fast-paced operational environments.

Clearance Requirements:

• Must hold a current/active top secret security clearance.

Physical Requirements:

• Must be able to remain in a stationary position 50%.

• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.