Lead Network Engineer, Centrix

MANTECH; Miami (FL); On-site; USD 120,000 - 160,000; Full time

Job summary

MANTECH in Doral, FL seeks a motivated Lead Network Engineer for CENTRIXS operations. You will provide technical leadership, mentor staff, and ensure secure multinational interoperability.

The role focuses on deploying and maintaining enterprise CENTRIXS networks, managing routers, switches, firewalls, and crypto devices, with emphasis on security and compliance.

Candidates should have DoD experience, top-secret clearance, and strong knowledge of BGP/OSPF and STIG processes.

Qualifications

• 7+ years of enterprise network engineering with related degree.
• Experience configuring CENTRIXS systems and coalition networks.
• Strong knowledge of BGP/OSPF/EIGRP, VPNs, firewalls, and NAC.
• Ability to document complex network topology and baselines.

Responsibilities

• Provide technical leadership to junior IT staff and help desk technicians.
• Design, deploy, configure, and maintain CENTRIXS network infrastructure.
• Manage enterprise routers, switches, firewalls, and crypto devices.
• Troubleshoot complex routing, switching, and data flows.
• Collaborate with coalition partners and leadership on interoperability.

Skills

CENTRIXS

Network design

Routing protocols

Firewall management

DoD STIG

CCNA

VPNs

Education

Bachelor’s degree in Network Engineering / Computer Science / IT

Master’s degree (advantageous)

Associate degree + significant experience

High school diploma + extensive experience

Tools

ACAS

HAIPE/TACLANE

Job description

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

Responsibilities Include But Are Not Limited To

• Provide technical leadership and mentorship to junior IT staff and help desk technicians, establishing best practices for daily operations.
• 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 7+ years of experience in enterprise network engineering.
  • OR a master’s degree and 5+ or more years of relevant experience
  • OR an associate’s degree and 9+ or more years of relevant experience
  • OR a high school diploma and 11+ 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.