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F5 Systems Engineer – TS​/SCI w​/Polygraph

Job in Sterling, Loudoun County, Virginia, 22170, USA
Listing for: General Dynamics Information Technology
Full Time position
Listed on 2026-06-17
Job specializations:
  • IT/Tech
    Systems Engineer, Cybersecurity, Network Engineer, Cloud Computing: Infrastructure & Operations
Salary/Wage Range or Industry Benchmark: 128039 - 173229 USD Yearly USD 128039.00 173229.00 YEAR
Job Description & How to Apply Below

Job Information

Req : RQ217296

Type of Requisition: Regular

Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph

Public Trust/Other

Required:

None

Job Family: IT Infrastructure and Operations

Skills: Complex Systems, Information Technology (IT), Systems Design

Experience: 8 + years of related experience

US Citizenship

Required:

Yes

Job Description

GDIT is your place. Make it your own by discovering new ways to apply the latest technologies securely and expertly. By owning your opportunity at GDIT, you’ll become a critical part in how we successfully solve our clients’ biggest challenges, deliver on promise, and innovate the client’s physical/virtual infrastructure for the future. Our work depends on an F5 Engineer joining our team to support Government activities in Sterling, VA or Annapolis Junction, MD.

At GDIT, we foster a people-focused and customer-centric environment in delivering Network Engineering Services. As an F5 Engineer supporting the Government, you will be responsible for traffic management, F5 Local Traffic Manager, F5 Global Traffic, Tool Command Language (TcL), and more.

In this role, a typical day will include:

  • Manages the configuration on multiple physical and virtual F5 across multiple data centers
  • Participates in the development and support of customer technical requirements
  • Plans, designs, develops, implements, and operates F5 products such as LTM, ASM, BIG-IQ, and APM
  • Provides clear technical documentation and written procedures for issues identified and addressed
  • Proposes and implements system enhancements that improves the performance and reliability of the network security infrastructure
  • Monitors and troubleshoots platform and OS based problems: network security infrastructure, and connectivity issues
  • Performs launch testing for new software releases and the introduction of new features
  • Collaborates with different technology towers to achieve common goals
  • Applies capacity planning configuration changes as needed
  • Addresses performance, scalability, and service architecture administration issues
  • Coordinates equipment orders including physical or virtual appliances, as well as upgrading, monitoring, testing, and servicing the systems as needed
Qualifications

Active TS/SCI clearance with CI polygraph

Education: Bachelor of Science Degree, or a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience.

Must have the F5 201 certification or obtain the certification within 3 months of hire date

Must meet DoD 8570 IAT Level II requirements including one of the following:
Security+ CE, CND, SSCP, GSEC, GICSP, CySA+, or CCNA Security.

7+ years of relevant F5 experience with F5 LTM, ASM, BIG-IQ, and/or APM administration and life cycle management including experience with advanced iRule creation and troubleshooting

Demonstrates knowledge of a broad range of technology towers i.e.:
Storage, Virtualization, Intel, Networking, Data Center Migration and Disaster Recovery

Experience deploying, managing, and troubleshooting network systems, switching, and routing protocol standards such as: TCP/IP, MPLS, OSPF, BGP, SDN, and 802.1x.

Experience managing and troubleshooting DNS, DHCP, IPAM, and NTP in a large multi-site environment

Knowledge of risk and controls landscape, ensuring company-wide standards are met

Benefits

GDIT offers a variety of medical plan options, including health savings accounts, dental and vision plans, a 401(k) plan with company match and paid time off including vacation, sick, personal, holidays, parental, military, bereavement and jury duty leave. Other benefits include short and long-term disability, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance.

Full flex work weeks where possible and a variety of paid time off plans.

Salary

The likely salary range for this position is $128,039 - $173,229. 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.

Equal Opportunity

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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