Network Security Engineer - F5/DNS/iRules
Description
Role: F5 SME IR35: Inside - £550.00 - £575.00 per day Duration: 12 months
World Wide Technology (WWT) is a global technology integrator and supply chain solutions provider. Through our culture of innovation, we inspire, build, and deliver business results, from idea to outcome.
World Wide Technology EMEA. has an opportunity available for an F5 SME to support our client, a leading Global Financial Services provider with a security infrastructure uplift program. The successful candidate will have deep knowledge in F5 internals, traffic management, iRule and DNS architecture, please see requirements below:
Key Responsibilities:
Design, implement, and maintain complex F5 BIG-IP solutions across LTM and F5 DNS/GTM
Develop and manage advanced iRules for traffic steering, security, and application logic
Own and configure DNS and global traffic management, including Wide IPs, health monitors, and failover strategies
Provide deep-level troubleshooting across network, DNS, TLS, and application layers
Act as an F5 subject matter expert for architecture decisions, incidents, and optimisation
Required Skills & Experience:
Strong hands-on experience with F5 BIG-IP (TMOS, LTM, DNS/GTM)
Advanced iRules development and traffic management expertise
Solid understanding of DNS infrastructure (authoritative vs recursive DNS, Anycast, TTLs, split DNS)
Experience deg highly available, resilient application delivery architectures
Ability to troubleshoot complex issues across TCP/IP, HTTP/S, TLS, and DNS
Candidates will be required to go through background checks before commencing contract.
Must be an EU Citizen. Some occasional travel maybe required. Only successful candidates will be contacted.
EQUAL OPPORTUNITIES World Wide Technology is committed to equal opportunities and actively seeks applications from all sectors of the community irrespective of sex, race, colour, nationality, ethnic or national origin, disability, marital status, sexual orientation, having responsibility for dependents, age, religion/beliefs, or any other reason which cannot be shown to be justified.