F5 Network Engineer

Peraton; Herndon (VA); On-site; USD 80,000 - 128,000; Full time

Job summary

Peraton seeks a skilled F5 Network Engineer to implement, configure, and optimize F5 technologies across data centers and WAN sites. You will ensure reliable application delivery and security while collaborating with network and infrastructure teams.

The ideal candidate has hands-on F5 BIG-IP experience, strong troubleshooting skills, and an ability to manage multiple priorities in a complex environment. U.S. citizenship and clearance eligibility are required.

Qualifications

• 5 years with a Bachelor's degree or 9 years with a HS Diploma.
• 5 years of hands-on experience in implementing and administering complex, multi-location networks.
• Hands-on experience on F5 Load Balancers in real world complex environments.
• Experience with Cisco routers & switches including Nexus, Catalyst, ONS, DNA Center and Infoblox DDI.
• Must be a US Citizen and able to obtain agency clearance.

Responsibilities

• Deploy, license, and configure F5 BIG-IP LTM hardware.
• Maintain Virtual servers, Pools, Nodes, Custom monitors and Persistence profiles.
• Manage SSL offloading, SSL bridging, and secure cipher configurations.
• Develop and troubleshoot iRules for advanced traffic steering and security workarounds.
• Manage SSL/TLS certificates lifecycle (CSR, deployment, renewal).
• Perform deep-packet diagnostics for complex delivery issues and latency.

Skills

F5 Load Balancers

Network Troubleshooting

TCP/IP Networking

Cisco Nexus/ASA

Security best practices

Education

Bachelor's degree in related field

11+ years equivalent experience

Tools

Nexus

Cisco IOS/ASA

Infoblox

Wireshark

tcpdump

Job description

F5 Network Engineer

Job Locations

US

Requisition ID

2026-170761

Position Category

Information Technology

Clearance

Agency Clearance

Responsibilities

Peraton is seeking an F5 Engineer to join our team. In this role, you will be responsible for the implementation, configuration, maintenance, troubleshooting, and optimization of F5 technologies supporting our network infrastructure. You will work closely with network and infrastructure teams to ensure reliable and secure application delivery across the Customer's Data Centers and MAN/WAN sites. The ideal candidate is a detail-oriented engineer with strong troubleshooting skills, the ability to manage multiple priorities, and a commitment to maintaining the performance, availability, and security of the network environment.

• Deploy, license, and configure F5 BIG-IP LTM hardware.
• Maintain Virtual servers, Pools, Nodes, Custom monitors and Persistence profiles
• Manage SSL offloading, SSL bridging, and secure cipher suite configurations.
• Author, optimize, and troubleshoot custom iRules (TCL-based) to handle:
  • Advanced traffic steering
  • URI redirects
  • Header manipulation
  • Specialized security workarounds
• Manage the lifecycle of SSL/TLS certificates, including:
  • CSR generation
  • Certificate deployment
  • Automated renewal cycles on BIG-IP devices
• Perform deep-packet and L3-L7 diagnostics for:
  • Complex application delivery issues
  • High latency
  • Routing issues
  • SSL handshake failures
• Utilize advanced tools such as:
  • Wireshark
  • tcpdump
  • F5 iQuery
  • F5 Analytics
• Execute TMOS operating system upgrades, hotfixes, and backup restorations using UCS/SCF configuration archives.
• Design and test failover mechanics in High Availability (HA) topologies, including:
  • Device Service Clustering (DSC)
  • Active/Standby setups
• Utilize F5 iControl REST APIs for programmatic control and monitoring.
• Recommend enhancements to improve systems availability and performance.
• Offer recommendations for procedural upgrades.
• Provide network administration and support for a campus-wide area network infrastructure.
• Maintain experience with:
  • TCP/IP protocol suite
  • IP subnets and masking
  • Routing protocols
• Work in Local Area Network (LAN) and Wide Area Network (WAN) environments.
• Design, configure, and troubleshoot Routing and Switching systems.
  • Cisco expertise required.
• Maintain security and ensure compliance with security policies and procedures.
• Provide on-call support for off-hours data center escalations.
• Perform regular scheduled out-of-hours maintenance window support.
• Maintain and manage network IP address management (IPAM)

Qualifications

Required Qualifications:

• 5 years with a Bachelor's degree or 9 years with a HS Diploma
• 5 years of hands‑on experience in the implementation and administration of complex, multi‑location, multi‑vendor, converged voice/data networks in a geographically distributed environment
• Must have in-depth hands‑on experience on F5 Load Balancers in real world complex environments
• Hands‑on experience in administering Cisco routers & switches including but not limited to Nexus 9xxx, Catalyst 9000, Cisco ONS, Cisco ACI and DNA Center. Juniper MX routers and EX switches. Infoblox DDI appliances
• Good understanding of network principles and the OSI model
• Experience managing networks, internal and external DNS, and the associated IP infrastructure
• Experience working in a Data Center
• Experience administering and configuring monitoring tools for proactive alerting and trends analysis
• Experience in working with support ticketing systems, managing assigned tickets, as well as providing appropriate follow‑up
• Experience with creating and maintaining documentation
• Experience with the use of Data Center inventory management tools
• Must be a US Citizen
• Must be able to obtain and maintain the required agency clearance

Peraton Overview

Peraton is a next‑generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can't be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we're keeping people around the world safe and secure.

Target Salary Range

$80,000 - $128,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual's experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

EEO

EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.