The Job Opportunity: Senior Network Engineer (Proxy) We are seeking an experienced and security-focused Senior Network Engineer specializing in Proxy technologies to join our team for a 6-month contract. This is a critical project delivery role focused on implementing and maintaining remote network services for a secure UK customer account. You will be instrumental in managing and enhancing a complex, multi-vendor environment, with a strong emphasis on network security, performance, and compliance. Job Title: Senior Network Engineer (Proxy) Required Clearance: SC (Security Check) - Mandatory Dual Nationals: Not Considered Remote role Reason for Engagement: To assist with peak load requirements on UK Secure accounts. Key Responsibilities Core Engineering and Implementation Lead the implementation, configuration, and migration of both forwarding and reverse proxy solutions, including technologies like Broadcom/Symantec and Netskope. Perform configuration changes and deployment tasks on security appliances, notably Checkpoint and Palo Alto Firewalls. Execute project tasks for deployment and integration across Cisco LAN/WAN and Aruba LAN infrastructures. Ensure successful end-to-end application flow by using a deep Layer 7 understanding to configure and troubleshoot networking components. Manage the deployment and configuration of PKI & SSL certificates for secure proxy operations. Troubleshooting and Maintenance Analyze, isolate, and resolve complex network errors and hardware issues across a large-scale, multi-vendor campus environment. Maintain and troubleshoot complex routing using protocols like OSPF, BGP, and iBGP. Conduct regular network testing, maintenance, and perform necessary upgrades to legacy components. Leadership and Documentation Act as a Subject Matter Expert (SME), providing advanced technical support and leading problem escalation. Mentor and guide junior engineering staff. Prepare and maintain comprehensive network diagrams and operational documentation. Collaborate with architects on design implementation and drafting technical proposals. Essential Skills and Experience Experience: 5 to 10 years of proven work experience in data networking and troubleshooting complex LAN/WAN/FW systems. Proxy Expertise: Must have hands-on experience with forwarding and reverse proxy technologies (e.g., Broadcom/Symantec, Netskope). Security: Strong experience with Checkpoint and Palo Alto Firewalls. Networking: Cisco LAN / WAN skills equivalent to CCNP Level. Aruba LAN skills equivalent to Aruba ACP Level. Expertise in OSPF, BGP, and iBGP. Web/Application: Strong Layer 7 understanding; knowledge of Web Servers (HTML, CSS & Java Script). Environment: Experience in a large-scale, multi-vendor complex campus and data centre environment. Qualifications and Requirements Mandatory Clearance: Must have activeSC (Security Check) clearance. Bachelor's degree or equivalent education and experience.Randstad Technologies is acting as an Employment Business in relation to this vacancy