F5 Network Engineer - TS/SCI with Polygraph
About The Position
Own your opportunity to support national defense. Your work will help keep critical operations secure and connected across the global enterprise directly, contributing to a mission that protects our nation every day. CIS is growing, and we invite both our experienced incumbents and new team members to be part of what’s next. Incumbents bring invaluable mission insight, while new talent adds fresh ideas and energy. Together, we’ll strengthen continuity and drive the next generation of innovation. As an F5 Network Engineer supporting CIS, you will design, secure, and sustain advanced application delivery and traffic management services across multiple enterprise networks. You will maintain highly available F5 load balancing environments, enforce secure configuration baselines, and deliver resilient access to mission critical applications. Your expertise directly enhances network performance, strengthens cybersecurity posture, and ensures the reliable delivery of core IT capabilities.
Requirements
- Bachelor’s degree in an IT-related field, 12+ years of relevant IT experience in lieu of a degree
- Meet DoD 8140 Information Assurance Workforce certification requirements (e.g. Security+ CE, etc.)
- Vendor-Specific (e.g. DDI certifications)
- Active TS/SCI clearance with a favorable polygraph
- Hands-on experience administering and supporting F5 BIG-IP platforms in an enterprise environment (LTM, GTM/DNS, ASM, APM)
- Strong understanding of TCP/IP networking, SSL/TLS, load balancing methodologies, traffic management concepts, and secure network design principles
- Experience with patch management, system hardening, vulnerability remediation, and compliance reporting for network infrastructure or security appliances
- Strong analytical, documentation, and cross team communication skills
- US citizenship required
Responsibilities
- Administer, configure, and optimize F5 BIG-IP platforms including LTM, GTM/DNS, ASM, APM, and VIPRION/VE components to support scalable and resilient application delivery
- Develop and tune traffic management profiles, SSL/TLS offload configurations, iRules/iApps, and advanced routing policies to ensure consistent service performance
- Monitor health, performance, and capacity of F5 appliances and virtual editions, proactively identifying opportunities to enhance throughput, resilience, and efficiency
- Implement secure configuration baselines, system hardening, and STIG aligned controls across all F5 devices and supporting infrastructure
- Execute timely patching, firmware updates, and security fixes for F5 platforms through approved deployment and compliance technologies
- Review weekly compliance and vulnerability scan results, identify noncompliant configurations, determine root causes, and drive remediation actions
- Track and apply approved security directives, task orders, and vulnerability notifications affecting load balancers, proxies, SSL/TLS services, and related network security functions
- Provide Tier 3 escalation support for complex application delivery issues including SSL negotiation, traffic flow, availability failures, and performance bottlenecks
- Collaborate with engineering, cybersecurity, networking, and operations teams to integrate new applications, validate secure designs, and support accreditation activities
- Maintain accurate documentation of configurations, patch schedules, certificates, iRules, and operational procedures to support audit readiness and change control
Benefits
- Variety of medical plan options
- Dental plan options
- Vision plan
- 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
- Full flex work weeks where possible
- Variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave
- Short and long-term disability benefits
- Life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance
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What This Job Offers
Job Type
Full-time
Career Level
Senior
