F5 Network Engineer

Peraton; United States; On-site; USD 80,000 - 128,000; Full time

Benefits offered by this job

Medical, Dental, Vision

401(k)

Paid time off

Parental leave

EAP

Short/Long term disability

Paid holidays

Job summary

Peraton is seeking an experienced F5 Engineer to implement, configure, and optimize F5 technologies across multi-site data centers and MAN/WAN networks. You will manage SSL offloading, iRules, and certificate lifecycles, while troubleshooting complex delivery issues and ensuring high availability.

Ideal candidates bring hands-on BIG-IP, Cisco/Juniper hands-on networking, DNS/IP infrastructure experience, and the ability to work across LAN/WAN environments.

Qualifications

• 5+ years with a Bachelor's degree or 9+ years with a HS Diploma (experience requirement).
• Hands-on experience with F5 BIG-IP LTM in complex environments.
• Experience administering Cisco routers/switches (Nexus, Catalyst, ONS, DNA Center).
• Experience with DNS and IP infrastructure in data center environments.
• Ability to troubleshoot complex application delivery issues and optimize performance.

Responsibilities

• Deploy, license, and configure F5 BIG-IP LTM hardware.
• Maintain virtual servers, pools, nodes, monitors and persistence profiles.
• Manage SSL offloading, SSL bridging, and cipher suites.
• Write, optimize and troubleshoot iRules for traffic steering and security workarounds.
• Manage SSL/TLS certificates lifecycles and renewal processes on BIG-IP devices.
• Perform deep-packet and L3-L7 diagnostics for latency, routing, and SSL issues.
• Use tools like Wireshark, tcpdump, F5 iQuery, and F5 Analytics.
• Execute TMOS upgrades, hotfixes, and backups via UCS/SCF archives.
• Design failover in HA topologies (DSC, Active/Standby).
• Use F5 iControl REST APIs for programmatic control and monitoring.
• Recommend enhancements to improve availability and performance.
• Provide network administration for campus LAN infrastructure.
• Maintain knowledge of TCP/IP, subnets, routing protocols.
• Work in LAN/WAN environments; configure routing and switching systems (Cisco).
• Participate in on-call and off-hours maintenance windows.
• Maintain IPAM and related network documentation.

Skills

US Citizenship

Agency clearance eligibility

Detail-oriented

Troubleshooting

Multiple priorities

Security compliance

LAN/WAN design

Education

Bachelor's degree

HS Diploma

Tools

F5 Load Balancers

Cisco routers & switches

Juniper MX

Infoblox DDI

Wireshark

tcpdump

F5 iQuery

F5 Analytics

F5 iControl REST APIs

Job description

About Peraton

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 solve the most daunting challenges that our customers face. Visit peraton.com to learn how we're keeping people around the world safe and secure.

About The Role

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.

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 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

Details

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.

• Benefits Statement: Peraton offers eligible employees a variety of benefits including medical, dental, vision, life, health savings account, short/long term disability, EAP, parental leave, 401(k), paid time off (PTO) for vacation, and company paid holidays. A full listing of available benefits can be viewed at https://www.careers.peraton.com/benefits.

EEO

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