Security Proxy Engineer £500-£600p/day (Inside IR35) 6 months (initially) London (3 days on site) ZScaler/Netskope/BluecoatA client of ours is looking for an experienced Security Proxy Engineer to support and enhance its enterprise proxy and secure egress environment. This will be within a large-scale Modern Desktop transformation, where high-performing internet access is critical to both user productivity and regulatory compliance.You will play a key role in ensuring the proxy layer is aligned to strict security and governance standards, while also providing hands-on operational support.Location: London, 3 days on siteRate: £500-£600p/day (Inside IR35)Contract length: 6 months (very strong possibility of extension due to the length of the project)Key Responsibilities:Provide day-to-day operational support for enterprise web proxy and secure egress platforms, acting as an escalation point for complex issuesTroubleshoot connectivity and performance issues using network tracing and packet-level analysisImplement and manage proxy policies, including traffic steering, access control and inspection rulesWork closely with security, network and infrastructure teamsSkills and Experience:Strong hands-on experience with enterprise proxy or secure web gateway technologies such as Zscaler, Netskope or BluecoatSolid understanding of networking fundamentals including TCP/IP, TLS/SSL and authentication flowsExperience troubleshooting at packet level and resolving complex inspection or routi