Senior F5 BIG-IP Engineer - Hybrid/Remote, Data Center

PlanIT Group; Reston (VA); On-site; USD 90,000 - 130,000; Full time

Job summary

PlanIT Group is seeking a skilled F5 BIG-IP LTM administrator in Reston, VA. The role covers deployment, licensing, configuration, and ongoing optimization of multi-location networks with a focus on application delivery and security.

The candidate will manage SSL offload, iRules, and certificate lifecycles in a data-center environment. The position requires strong experience with Cisco/Nexus/Juniper devices, DNS/IP management, and proactive monitoring.

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 with F5 Load Balancers in real environments
• Experience administering Cisco/Nexus routers and switches and other listed vendors
• Good understanding of network principles and OSI model
• Experience managing DNS and IP infrastructure
• Data Center experience
• Experience with monitoring tools and proactive alerting
• Experience with ticketing systems and documentation
• Must be a US Citizen and able to obtain clearance

Responsibilities

• Deploy, license, and configure F5 BIG-IP LTM hardware
• Maintain Virtual servers, Pools, Nodes, and monitors
• Manage SSL offloading and cipher suites
• Develop and troubleshoot iRules (TCL) for traffic steering and security workarounds
• Manage SSL/TLS certificates lifecycle and automated renewals
• Perform deep packet and L3-L7 diagnostics for complex app issues
• Utilize tools like Wireshark, tcpdump, F5 iQuery, F5 Analytics
• Execute TMOS upgrades and backups
• Test failover in HA topologies (DSC, Active/Standby)
• Use F5 iControl REST APIs for programmatic control
• Recommend improvements for availability and performance
• Provide network administration for campus LAN/WAN
• Maintain IP addressing and subnetting knowledge
• On-call and after-hours maintenance

Skills

F5 BIG-IP

TCP/IP

DNS

Network troubleshooting

Security best practices

Education

Bachelor's degree

Tools

F5 LTM hardware

Cisco routers/switches

Nexus 9xxx

Catalyst 9000

Juniper MX

Infoblox DDI

Job description

PlanIT Group is seeking a skilled F5 BIG-IP LTM administrator in Reston, VA. The role covers deployment, licensing, configuration, and ongoing optimization of multi-location networks with a focus on application delivery and security.

The candidate will manage SSL offload, iRules, and certificate lifecycles in a data-center environment. The position requires strong experience with Cisco/Nexus/Juniper devices, DNS/IP management, and proactive monitoring.