City of London, London, United Kingdom Hybrid / WFH Options
DGH Recruitment
for maintaining the existing LAN/WAN infrastructure as well as working on projects and Changes to the network infrastructure. Responsibilities: - Design, implement and manage complex network infrastructure using Cisco campus networking 9300 series and CiscoNexus switches. - Administer and configure FortiGate Firewalls for advanced security measures and threat management. - Provide technical support and troubleshooting for Fortinet … associated Wi-Fi networks. - Work with the team to implement new services including Palo Alto Prisma Access Firewalls, VeloCloud SD-WAN and Azure cloud networking. Required Skills/Experience: - Cisco campus networking and CiscoNexus switches - Proven experience in supporting network security functions primarily focussing on Cisco ISE. - Experience in the configuration, deployment, and maintenance of … Fortinet and Cisco devices. - Strong understanding of wireless protocols, WLC configurations, and security principles. - Working knowledge of Palo Alto firewalls, Prisma Access and SD-WAN in general will be highly desirable Senior Network Engineer/Lead Network Engineer (12 month Fixed Term Contract) In accordance with the Employment Agencies and Employment Businesses Regulations 2003, this position is advertised based More ❯
Cisilion are looking for a Senior Technical Consultant to join our high-performing Professional Services team. In this role, you'll be responsible for consulting, designing, planning, and implementing Cisco-based technical projects. You'll work closely with Principal Technical Consultants, Presales Architects, and other cross-functional teams to deliver high-impact solutions that meet our clients' needs. As … GDPR best practices. Typical Deliverables Serve as a trusted subject matter expert in relevant technologies, delivering technical presentations, solution demonstrations, and proposal development, with a deep understanding of core Cisco SMB and Enterprise technologies. Function as a mentor and technical escalation point, providing expert-level knowledge, peer-level review, and guidance on issue resolution, standards, design, and best practices. … Professional Services, both internally and externally. Provide technical governance and oversight for one or more teams of consultants and third parties throughout project duration Certifications Essential: Valid and active Cisco Certified Networking Professional (CCNP) - Enterprise Essential: Valid and active Cisco Certified Networking Professional (CCNP) - Security Desirable: Cisco Certified Networking Professional (CCNP) - Data Center Desirable: Cisco Certified More ❯
scale AI and HPC environments. Key Responsibilities: •Design, deploy, and manage VXLAN EVPN-based fabric networks supporting AI and high-performance computing workloads. •Build scalable spine-leaf architectures using CiscoNexus 9000 or Arista switches, ensuring efficient Layer 2/Layer 3 segmentation and workload mobility. •Optimize network performance for RoCEv2, GPUDirect, and low-latency traffic flows, ensuring … and capacity planning for evolving AI workloads and future-proof infrastructure designs. Required Skills & Expertise: •Proven experience designing and operating VXLAN EVPN-based data center networks. •Strong knowledge of Cisco ACI, Nexus 9000, or Arista EOS platforms. •Expertise in data center routing and switching, including BGP, OSPF, IS-IS, multicast, and fabric path. •Deep understanding of AI-specific … Python, Ansible, and Terraform. •Familiarity with GPU-accelerated workloads and distributed systems in AI/ML and HPC environments. Preferred Qualifications & Certifications: •CCNP or CCIE Data Center (highly preferred) •Cisco Certified Specialist – Enterprise Core or Data Center Core •Additional certifications in NVIDIA Networking (Cumulus/Spectrum) or Arista ACE are a plus •Experience with hybrid and multi-cloud networking More ❯
scale AI and HPC environments. Key Responsibilities: •Design, deploy, and manage VXLAN EVPN-based fabric networks supporting AI and high-performance computing workloads. •Build scalable spine-leaf architectures using CiscoNexus 9000 or Arista switches, ensuring efficient Layer 2/Layer 3 segmentation and workload mobility. •Optimize network performance for RoCEv2, GPUDirect, and low-latency traffic flows, ensuring … and capacity planning for evolving AI workloads and future-proof infrastructure designs. Required Skills & Expertise: •Proven experience designing and operating VXLAN EVPN-based data center networks. •Strong knowledge of Cisco ACI, Nexus 9000, or Arista EOS platforms. •Expertise in data center routing and switching, including BGP, OSPF, IS-IS, multicast, and fabric path. •Deep understanding of AI-specific … Python, Ansible, and Terraform. •Familiarity with GPU-accelerated workloads and distributed systems in AI/ML and HPC environments. Preferred Qualifications & Certifications: •CCNP or CCIE Data Center (highly preferred) •Cisco Certified Specialist – Enterprise Core or Data Center Core •Additional certifications in NVIDIA Networking (Cumulus/Spectrum) or Arista ACE are a plus •Experience with hybrid and multi-cloud networking More ❯
and supporting network technologies in enterprise environments, ideally within financial services or regulated sectors. Hands-on experience with automation and monitoring tools. Skilled in configuring, managing, monitoring, and troubleshooting CiscoNexus, firewalls, Meraki switches, and WiFi networks. Knowledge and experience with Zero Trust networking environments. Experience configuring, supporting, and maintaining monitoring solutions such as SolarWinds. Degree or equivalent More ❯
monitor implementation milestones, ensuring adherence to agreed timelines and SLAs. Responsible for logical and physical configuration of network infrastructure hardware including Palo Alto Firewalls, ZPE Out-of-Band devices, Cisco Catalyst/Nexus Switches, and Juniper EX/QFX/MX series devices. Create and maintain network build documents, change management records, and as-built documentation. Provide technical … Scripting, and automation with Ansible/Python. Certifications: JNCIA (Juniper Networks Certified Associate) JNCIS (Specialist) - Enterprise Routing and Switching JNCIP (Professional) - preferred or in progress Hands-on experience with Cisco Catalyst/Nexus Switches, VLAN management, STP, and EtherChannel. Familiarity with ZPE NodeGrid Out-of-Band devices and Palo Alto Firewall configuration. In-depth knowledge of Layer More ❯
on experience configuring and managing IPsec VPNs, including site-to-site and remote access solutions for secure network communication Proficient in deploying, configuring, and maintaining network infrastructure using Juniper, Cisco (including Nexus), MikroTik, and FortiGate devices Detailed understanding of modern router architecture, LAN switching architecture, design and implementation. Understanding diagnostic tools, Tcpdump, Wireshark, NMAP, Netflow. Knowledge of monitoring … management tools (OSS/NMS) such as OpenNMS or similar. Network automation exposure with experience in Python software development and network infrastructure management using CLI, SNMP, NETCONF interfaces. Having Cisco network certifications - CCNA (routing and switching) or equivalent as a minimum. Benefits 25 days holiday which increases after 5 years service (1 day per year until 30 days) Group More ❯
