F5 Systems Administrator

General Dynamics Information Technology, Inc.; Tampa (FL); On-site; USD 123,000 - 167,000; Full time

Benefits offered by this job

401K with company match

Full-flex work week

Paid vacation

Job summary

General Dynamics Information Technology, Inc. is seeking a seasoned F5 Systems Administrator to configure, deploy, and maintain F5 BIG-IP systems and related traffic-management functions for USCENTCOM on the CITS contract.

The role focuses on high availability, security, and performance, with the use of iRules, TLS offloading, and adaptive load-balancing. Candidates must have TS/SCI and related certifications, with on-site duties at MacDill AFB, FL.

Qualifications

• Minimum five (5) years of hands-on experience with F5 BIG-IP systems, including Load Balancers, ADCs, and SSL offloading.
• Must have deep proficiency in configuring and managing F5 systems for high availability, disaster recovery, and scalability.
• Strong knowledge of networking protocols, including TCP/IP, HTTP, HTTPS, DNS, and SSL/TLS.
• Experience with F5 iRules and traffic management policies for application delivery.
• Ability to troubleshoot complex F5 issues, including performance, connectivity, and security problems.
• Must have experience managing workloads and agile tasking using Azure DevOps (ADO) boards, Scrumban, or related Agile methodologies under tight DoW operational timelines.
• Excellent documentation skills for creating and maintaining configuration guides, troubleshooting steps, and change management records.

Responsibilities

• Configure, deploy, and maintain F5 BIG-IP systems, including Load Balancers, ADCs, and SSL offloading configurations.
• Design and implement traffic management rules, including GSLB and LSLB.
• Manage F5 configurations for SSL/TLS offloading and certificate management.
• Configure and maintain F5 iRules to manage traffic and enhance functionality.
• Assist in F5 system upgrades, patches, and troubleshooting to ensure system functionality.
• Collaborate on new F5 solutions to improve delivery, scalability, and security.
• Execute daily F5-related tasks and track work in ADO boards.
• Participate in Scrumban planning and reviews for mission-driven priorities.
• Ensure compliance with security policies and regulatory requirements for F5 deployments.
• Develop and maintain documentation for F5 configurations and procedures.
• Collaborate with teams to integrate F5 solutions into the broader infrastructure.

Skills

F5 BIG-IP

F5 Load Balancer

IT Troubleshooting

Scrum (Agile)

Tools

Azure DevOps

iRules

tmsh

Job description

General Information

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: F5, F5 Load Balancer, IT Troubleshooting, Scrum (Agile) Certifications: None Experience: 5 + years of related experience US Citizenship Required: Yes Job Description: Transform technology into opportunity as an F5 Systems Administrator at GDIT. You will play a crucial role in configuring, maintaining, and troubleshooting F5 load balancing and traffic management systems to ensure high availability, reliability, and performance of critical applications and services for USCENTCOM on the CITS contract. The F5 Administrator is responsible for the configuration, deployment, and maintenance of F5 BIG‑IP systems, ensuring the optimal performance, security, and availability of critical applications.

Role Overview

F5 Administrator will contribute directly to the mission success of USCENTCOM by maintaining robust and efficient application delivery services.

How F5 Systems Administrator Will Make an Impact

F5 System Configuration & Maintenance

• Configure, deploy, and maintain F5 BIG‑IP systems, including Load Balancers, Application Delivery Controllers (ADCs), and SSL offloading configurations.
• Design and implement traffic management rules, including global server load balancing (GSLB) and local server load balancing (LSLB).
• Manage F5 configurations for SSL/TLS offloading, including key and certificate management for secure communication.
• Configure and maintain F5 iRules to manage application traffic and provide enhanced functionality for specific use cases.
• Assist in performing F5 system upgrades, patches, and troubleshooting tasks to ensure continued system functionality.
• Assist in the design and implementation of new F5 solutions to improve application delivery, scalability, and security.

Troubleshooting & Performance Optimization

• Troubleshoot and resolve F5‑related performance and availability issues, ensuring minimal service disruptions.
• Monitor F5 systems for health and performance, providing proactive recommendations for optimization.
• Support incident response and root cause analysis for any F5‑related issues impacting critical applications or services.
• Participate in capacity planning for F5 devices and the overall infrastructure to meet growing demand and service requirements.
• Continuously evaluate and recommend enhancements to optimize the performance, security, and availability of applications.

Operational & Agile Management

• Execute daily F5‑related tasks, ensuring compliance and meeting deployment deadlines for application delivery services.
• Utilize Azure DevOps (ADO) boards to track active operational tasks, backlog items, and customer requests related to F5 configurations and deployments.
• Participate in Scrumban planning and review sessions to contribute to the prioritization of F5 operational efforts based on mission urgency, USCENTCOM directives, and service level agreements (SLAs).

Security & Compliance

Ensure compliance with security policies, best practices, and regulatory requirements in the deployment and maintenance of F5 systems. Apply knowledge of DNS, HTTP/HTTPS, and security mechanisms in the context of F5 load balancing.

Documentation & Collaboration

• Develop and maintain documentation for F5 configurations, change management, troubleshooting guides, and standard operating procedures.
• Collaborate with network, systems, and security teams to integrate F5 solutions into the broader network and infrastructure environment.
• Provide technical support and guidance to other IT teams and end‑users regarding F5 traffic management solutions.
• Collaborate with vendors to resolve hardware or software‑related issues and escalates problems when necessary.
• Work with multiple teams to design and implement end‑to‑end application delivery solutions.

Operational Readiness & Improvement

• Ensure continuous coverage for critical operations by maintaining an up‑to‑date on‑call roster for personnel assigned to after‑hours or emergency support.
• Identify, evaluate, and recommend opportunities to optimize F5 operational efficiency and application delivery health through automation, custom scripting (e.g., iControl REST, tmsh), and modernized F5 technologies.

What You’ll Need to Succeed

Required Qualifications

• Minimum five (5) years of hands‑on experience with F5 BIG‑IP systems, including Load Balancers, ADCs, and SSL offloading.
• Must have deep proficiency in configuring and managing F5 systems for high availability, disaster recovery, and scalability.
• Strong knowledge of networking protocols, including TCP/IP, HTTP, HTTPS, DNS, and SSL/TLS.
• Experience with F5 iRules and traffic management policies for application delivery.
• Ability to troubleshoot complex F5 issues, including performance, connectivity, and security problems.
• Must have experience managing workloads and agile tasking using Azure DevOps (ADO) boards, Scrumban, or related Agile methodologies under tight DoW operational timelines.
• Excellent documentation skills for creating and maintaining configuration guides, troubleshooting steps, and change management records.

Required Certifications

Applicable DoW 8140 or DoW 8570 Certification (e.g., CompTIA Security+).

Required Security Clearance

Active TS/SCI.

Travel Requirement

Willingness and capable of supporting USCENTCOM exercises or operational requirements, with potential for up to 10% travel to OCONUS locations.

Preferred Qualifications

• F5 Certified Administrator (F5‑CA), F5 Certified Technology Specialist (F5‑CTS), ITIL 4 Foundation Certification.
• Familiarity with monitoring and reporting tools for F5 system performance (e.g., F5 Analytics).
• Experience with F5 integration in hybrid cloud or multi‑cloud environments.
• Familiarity with automation and orchestration tools for F5 management (e.g., Ansible, Terraform).
• Prior experience supporting USCENTCOM and familiarity with its mission and operations.

GDIT Is Your Place

Full‑flex work week to own your priorities at work and at home. 401K with company match. Comprehensive health and wellness packages. Internal mobility team is dedicated to helping you own your career. Professional growth opportunities include paid education and certifications. Cutting‑edge technology you can learn from and apply to solve real‑world problems. Rest and recharge with paid vacation and holidays.

Salary and Work Details

The likely salary range for this position is $123,250 - $166,750. This is not, however, a guarantee of compensation or salary. Rather salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours: 40

Travel Required: Less than 10%

Telecommuting Options: Onsite

Work Location: USA FL MacDill AFB

Additional Work Locations: Total Rewards at GDIT: Our benefits package for all US‑based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post‑tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long‑term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Identity Verification Process

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission‑ready capabilities in AI, cloud, cyber and software development.

Equal Opportunity Employer

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans Opportunity Owned From working with technologies like AI, cyber and cloud to careers in intelligence and health, we offer endless opportunities to apply your expertise to create a safer, smarter world.