including IPsec, SSL/TLS, and AAA (RADIUS, TACACS+) Understanding of application layer protocols such as HTTP, DNS, and DHCP Experience with network devices from vendors like Cisco, Juniper, Arista, etc. Knowledge of firewalls, IDS/IPS, and other security appliances Experience with load balancing technologies and strategies Familiarity with wireless networking standards and equipment Understanding of cloud networking More ❯
Sheffield, South Yorkshire, England, United Kingdom
Ninetech
Data Network & Security Specialist within large-scale enterprise networks. Deep technical expertise in networking technologies , especially SDN including Cisco ACI , spine & leaf architectures , and vendors such as Cisco and Arista . Hands-on knowledge in Subnetting , Switching , Routing , VLANs , VRFs , NAT , VXLAN , EVPN , etc. Proficiency in Infrastructure as Code and modern automation/configuration tools like Ansible , Git , GitHub More ❯
Sheffield, South Yorkshire, Yorkshire, United Kingdom Hybrid / WFH Options
WWT EMEA UK LIMITED
Manage vendors across the project delivery and technical matters. Rich experience as a data network and security specialist in a large enterprise network. Strong Technical knowledge in networking (Cisco, Arista, and Others) with an emphasis on software-defined networks (SDN) such as Cisco ACI and leveraging spine & leaf designs. Proficient hands-on experience networking background (Subnetting, Switching, Routing, VLANs More ❯
City of London, London, United Kingdom Hybrid / WFH Options
ECS
Contract Opportunity: Network Engineer (Cisco & Arista) - Hybrid, London - Inside IR35 We're working with a leading tech-driven organisation seeking a Network Engineer to join their high-performing infrastructure team on a contract basis. Location: London (Hybrid) Contract Type: Inside IR35 Key Responsibilities: Design, implement, and support scalable data centre networks Troubleshoot complex enterprise network issues Automate network operations … using tools like Ansible, Python, and Git Collaborate across engineering, security, and DevOps teams Tech Stack: Core: Cisco, Arista (IOS, NX-OS, EOS) Protocols: BGP, OSPF, EVPN, VXLAN, MPLS Tools: Python, Ansible, Jinja2, Git Ideal Candidate: Strong experience in large-scale enterprise or data centre networks Hands-on with Cisco and Arista platforms Comfortable in Agile/DevOps More ❯
edge AI data centres. Key Responsibilities Configure, manage, and troubleshoot Layer 2 and Layer 3 network infrastructure across AI/hyperscale datacentres. Configure and deploy spine-leaf switches (Cisco, Arista, Juniper) Support deployment and scaling of high-speed (10/40/100/400GbE) networks including spine-leaf architectures. Monitor and maintain physical and virtual network environments using … in a hyperscaler or HPC environment Proficient with L2/L3 protocols, automation tools, and AI fabrics Familiarity with NVIDIA Spectrum or similar switches is a plus Certifications: CCNP, Arista ACE, JNCIP What We Offer Competitive salary or daily contract rates Access to cutting-edge AI infrastructure projects Opportunities for growth in next-gen networking technologies Collaborative, innovation-driven More ❯
Network Engineer - Hedge Fund - IP, Arista, Automation, Switching, AWS, Ansible/Python - Contract Network Engineering team based in London Currently our hedge fund client is in the process of getting ready for an office move in London Key requirements Network Automation Experience with IP Connectivity Arista Switches Experience with cloud technologies such as AWS Scripting in either Ansible More ❯