F5 Resident Engineer

Salary: £76,000 - 97,000 per year

Requirements

• Senior-level experience with F5 BIG-IP LTM
• Strong hands-on experience with BIG-IP DNS/GSLB
• Experience in ASM (WAF) policy management and tuning
• APM/SSL VPN configuration and support
• Ability to read, troubleshoot, and modify iRules
• Experience supporting 24x7 production environments
• Service provider/telco network experience (preferred)
• Knowledge of multi-site, HA and failover architectures (preferred)
• Familiarity with proxy environments (forward and reverse) (preferred)
• Exposure to BIG-IQ and centralized licensing models (preferred)

Responsibilities

• Act as the day-to-day operational owner of the F5 estate
• Provide incident support and troubleshooting (P1-P3)
• Oversee BAU operations and service monitoring
• Implement configuration changes across LTM, DNS, ASM, and APM
• Manage SSL certificate renewals and maintenance
• Tune WAF policies and onboard partner services
• Support DNS/GSLB traffic steering and site failover
• Assist with upgrades, pre-prod testing, and production promotions
• Collaborate with internal customer and vendor teams

Technologies

• Support
• Network
• VPN
• WAF

More

We are a dynamic team looking for a F5 Resident Engineer to support our operations primarily remotely, with some on-site attendance required in southern cities. In this role, you will be the operational owner of our F5 estate, ensuring smooth and efficient running of our services. We value collaboration and offer a supportive environment where your skills can shine. Join us to be part of a team that prioritizes excellence in service delivery.

last updated 16 week of 2026