Network Engineer - F5 / DDI (BlueCat)

Network Engineer - F5 / DDI (BlueCat) | £64/hour (Inside IR35) | 9-12 months | Large enterprise client We're looking for an experienced network engineer to join the operations team. This is day to day incident response and production support, not a project/build role. You'll be the technical SME for DDI/DNS and load balancing infrastructure, owning incidents through to resolution and keeping the environment running. BlueCat is essential - candidates without hands-on BlueCat experience will not be considered for this role. Key details: Rate: £64/hour (Inside IR35) Contract length: 9-12 months, likely to extend Working pattern: 4 days/week, 40 hours, rota covering 07:00-18:00 What You'll Be Doing BAU operational support and incident triage for BlueCat DDI (DNS, DHCP, IPAM - on-prem and Cloud Resolver), F5 (LTM/GTM/APM), and VMware Advanced Load Balancer (Avi) Acting as the technical escalation point for business-impacting network incidents, working the problem until it's resolved Proactive reviews - DR testing, vulnerability checks, identifying gaps in observability Keeping runbooks, wikis, and documentation current so triage is fast and repeatable Secondary support on adjacent security infrastructure - firewalls, proxy, content inspection Enforcing production governance during triage, testing, and fixes What You'll Bring BlueCat DNS/DHCP/IPAM, including Cloud Resolver - hands-on and essential 7+ years in network operations/support (not project/design-only), with strong DNS/DHCP, SSL/TLS, HTTP/S, SNMP knowledge, plus layers 1-4 (TCP/IP, Ethernet, ARP) F5 load balancing (LTM/GTM/APM) and VMware Advanced Load Balancer Confidence troubleshooting complex problems independently, using tools like Wireshark, Splunk, NetScout, SevOne If this sounds like a good fit, apply now! Network Engineer - F5 / DDI (BlueCat) | £64/hour (Inside IR35) | 9-12 months | Large enterprise client Oscar Associates (UK) Limited is acting as an Employment Business in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.