System Administrator II (Big-IP F5)

Sumaria Systems LLC
Montgomery, AL

Job Description

Job Description

Job Title: System Administrator II (Big-IP F5)

Job Description: Information networks are critical to modern warfare. This position plays a critical role in our nation’s defense through the operation, management, and defense of the Air Force portion of the Department of Defense (DoD) Information Network. You will be a key player on our team, helping the Air Force attain the following desired effects in its management of the DoD Information Network (DoDIN):

  • Assured System and Network Availability that ensures uninterrupted availability and protection of system and network resources. This includes providing for graceful degradation, self-healing, fail-over, diversity and elimination of critical failure points.
  • Assured Information Protection of information in storage, at rest, while it is passing over networks, including from the time it is stored and catalogued until it is distributed to users, operators, and decision makers.
  • Assured Information Delivery of information to users, operators, and decision makers in a timely manner.

In this role, you will provide system administration and engineering solutions on all Big-IP F5 load balancing systems. This is expected to include, but will not necessarily be limited to the following activities:

  • Manage application integration designs around application logic and authentication configuration (session management, application redirects, rewrites, migration scenarios, app routing, CAC/PIV authentication).
  • Support, troubleshoot, and configure SSL intercept/inspection, web certificates, certificate management, PKI Certificate Authority (CA) bundles, private/public keys.
  • Install, configure, and administer Big IP F5 Platform Suite referencing Web Applications with Local Traffic Manager (LTM) and Access Policy Manger (APM) services.
  • Install and patch Big IP F5 systems, and document DISA Security Technical Implementation Guidelines (STIGs) checklists.
  • Design and administrator load balancing strategies/ techniques, in application switching / traffic management, knowledge of persistence, and SSL certificates.
  • Create and maintain documentation detailing architecture components, configurations, monitoring & alerting setup, troubleshooting guides, and checklists.
  • Notify appropriate Information Technical Equipment Custodian (ITEC) or Property Custodian (PC), in writing, within 4 hours for all accountable item moves.
  • Neatly bundle and conceal all excess system or peripheral cabling after each installation or repair.
  • Support the development, testing, and implementation of solutions and best practice methodologies that enable the prioritization of uptime by implementing failover and high availability configurations with two-person integrity (TPI) ensuring maximum amount of uninterrupted network operations.
  • Support the essential tasks, Situational Awareness (SA), and Command and Control (C2) that comprise the operational framework that comprises NetOps.
  • Support the following essential NetOps tasks: DoDIN Enterprise Management (EM), DoDIN Network Defense (DoDNetD), and DoDIN Web Content Management.
  • Other system administration related tasks, as assigned.

Required Skills/Education:

Education: High School Diploma or GED.

Certification Requirements: Security+ or DoDD 8140 IAT-II equivalent and one of the following certifications: F5 Certified Technology Specialist (F5-CTS) – Local Traffic Manager (LTM) or F5-CTS- Access Policy Manager (APM) or F5 BIG-IP Certified Administrator.

Years of Experience: 5+ years of professional experience with Big IP F5 products performing systems administration, of all Big-IP F5 Manage application integration designs around application logic and authentication configuration (session management, application redirects, rewrites, migration scenarios, app routing, CAC/PIV authentication).

Travel: Yes (less than 10%)

Security Clearance Required: Secret

Position Type: Full Time

Work Location: Montgomery, AL (Gunter Annex)

Expected salary range is $75,0000 to $82,500.

Agency submissions are not being accepted at this time.

For more information on Sumaria Systems, please visit our website at

Sumaria is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity and expression, age, disability, or protected veteran status.

Sumaria is a Full Lifecycle Engineering, Technical Services and Professional Solutions company in support of the Warfighter, supporting modernization, high end services and next generation capabilities in contested domains. Sumaria has been a trusted partner to U. S. Department of Defense for more than 40 years, providing Lifecycle Systems Engineering, Advisory & Analysis/SETA, C5ISR and Enterprise Information Technology solutions. With expertise to lead, insight to deliver and commitment to succeed; we staff each mission with a carefully selected team of seasoned professionals. We're Headquartered in Peabody, MA, and have regional offices across the nation.

Sumaria Systems only provides engineering services to the federal government and does not provide professional engineering or surveying services to the public within the meaning of Ohio Revised Code Section 4733.16.

Posted 2026-03-01

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