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MANTECH

Security Engineer

MANTECH Doral, Florida, United States

IT System Data Services · 5,001-10,000 employees

1 h ago
security Senior (5-10 yrs) Full-time United States
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About the role

Design, deploy, configure, and maintain F5 BIG-IP appliances, RSA SecurID authentication infrastructure, and Infoblox DNS, DHCP, and IPAM services. Maintain secure system access, system baselines, patches, and engineering documentation while troubleshooting systems and improving security, redundancy, and traffic performance.

What they look for

F5 BIG-IP Administration Network Security Engineering RSA SecurID Multifactor Authentication Infoblox DNS, DHCP, and IPAM SSL/TLS Offloading Access Management Traffic Management Security Patch Management Configuration Management Technical Documentation DoD STIG Compliance Vulnerability Management System Troubleshooting

Requirements

Requires a relevant degree and 5 or more years of network security engineering experience, with alternative education and experience combinations accepted. Candidates must have hands-on experience with F5 BIG-IP, RSA SecurID, and Infoblox, strong network security and documentation skills, and an active TS/SCI clearance.

Full description

Description & Requirements

Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now—protect and innovate with MANTECH!

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

Responsibilities include but are not limited to:

  • Designing, deploying, configuring, and administering F5 BIG-IP Local Traffic Managers (LTM), Access Policy Managers (APM), and Application Security Managers (ASM).
  • Managing, configuring, and maintaining RSA SecurID Authentication Manager infrastructure and multifactor authentication (MFA) token deployments across mission networks.
  • Administering, optimizing, and troubleshooting Infoblox Grid enterprise DNS, DHCP, and IP Address Management (IPAM) core network services.
  • Collaborating with cross-functional technical teams, network engineers, and system administrators to maintain secure system access control and traffic management.
  • Conducting routine system patch management, security upgrades, baseline configuration management, and diagnostic troubleshooting for specialized security appliances.
  • Maintaining system baselines, configuration management records, and engineering documentation across physical and virtual network environments.
  • Recommending and implementing continuous engineering process improvements to enhance system redundancy, security compliance, and traffic performance.

Minimum Qualifications:

  • Bachelor’s degree in Systems Engineering, Computer Science, Information Technology, or a related field with 5+ years of experience in network security 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 F5 BIG-IP appliances (LTM, APM, ASM), RSA SecurID systems, and Infoblox DDI infrastructure.
  • Strong background in network security engineering, SSL/TLS offloading, access management, DNS/DHCP protocol analysis, and traffic management.
  • Experience maintaining system baselines, configuration management controls, and security patch deployment schedules.
  • Experience creating, maintaining, and communicating complex technical engineering documentation and architecture diagrams.

Preferred Qualifications:

  • Relevant professional certifications such as F5 Certified Technology Specialist (F5-CTS), Infoblox Core Certified Administrator (ICCA), RSA Certified Administrator, or CompTIA Security+.
  • Prior experience supporting U.S. Military Command operations, Combatant Command environments, or Department of Defense enterprise technical environments.
  • Familiarity with DoD STIG compliance, automated vulnerability management (ACAS), and secure baseline auditing procedures.
  • Demonstrated ability to collaborate effectively across multi-disciplinary engineering teams in fast-paced operational environments.

Clearance Requirements:

  • Must hold a current/active TS/SCI 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 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.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.

General information

Requisition #

R71408

Locations

USA-FL-Doral

Posting Date

11/10/2026

Security Clearance Required

TS/SCI

Remote Type

Onsite

Time Type

Full time

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