Cisilion has the exciting opportunity for a Cisco focused Senior Technical Consultant to join them on a permanent basis. Cisilion strive to consistently deliver beyond our client’s and employee’s expectations, providing world-class service and market leading technology solutions. We have combined our collective expertise over … practices. KNOWLEDGE & EXPERIENCE - 5+ years of hands-on SMB and Enterprise wired campus consultative design and deployment. - Demonstrate extensive experience of designing and deploying: Cisco Catalyst and Nexus routing and switching, including traditional (C/D/A, 2/3 tier, collapsed core etc) deployments and software … defined solutions (Cisco Software Defined Access (SDA), Catalyst Center/DNAC etc.) Cisco Catalyst SD-WAN and associated services Cisco Secure Firewall and associated components (Management, Secure Client, Policy, NAT, AMP, URL Filtering, TLS Offload, IDS/IPS etc.) Cisco Identity Services Engine (ISE) and associated More ❯
end customers. This role involves working with cutting-edge technology on National Critical Infrastructure projects of national importance. The environment is mainly Juniper, with Cisco experience being advantageous but not essential; Cisco engineers eager to learn can be trained. Required Skills and Experience: Hands-on troubleshooting experience with … routing, HSRP, VRF, tunneling protocols). Strong knowledge of Layer 2 technologies (VLANs, port-security, 802.1X, spanning-tree). Experience with firewalls such as Cisco Firepower, Cisco ASA, including features like ASDM, ACLs, IPSEC VPNs. Experience working with Cisco Catalyst switches, CiscoNexus switches, Cisco ISR and ASR routers, and Cisco ISE. Understanding of network-level encryption. Strong experience with Juniper leaves, spines, and switches. F5 Load Balancers knowledge. Knowledge of Cisco ISE Appliance. Desirable Skills: Core routing and switching knowledge at CCNP level. Experience with Catapans. Knowledge of Juniper Apstra. If More ❯
edge technology on National Critical Infrastructure on projects of national importance. Mainly a Juniper environment, pre-existing experience isn't essential but rather advantageous. Cisco Engineers can be trained if eager and willing. Your transferable skills and experience: Hands-on experience in troubleshooting enterprise networks Solid understanding of IP … routing (BGP, OSPF, static routing, HSRP, VRF, tunneling protocols) Solid understanding of Layer 2 technologies (VLANs, port-security, 802.1X, spanning-tree) Experience with firewalls - Cisco Firepower, Cisco ASA and related features (ASDM, ACLs, IPSEC VPNs) Experience working with Cisco Catalyst switches, CiscoNexus switches, Cisco ISR and ASR routers, and Cisco ISE Understanding of network-level encryption Strong experience with Juniper leaves spines and switches F5 Load Balancers Cisco ISE Appliance Desirable: Solid understanding and working knowledge of core routing and switching at CCNP level Catapans Juniper Apstra If you are interested More ❯
routing (BGP, OSPF, static routing, HSRP, VRF, tunneling protocols) Solid understanding of Layer 2 technologies (VLANs, port-security, 802.1X, spanning-tree) Experience with firewalls - Cisco Firepower, Cisco ASA and related features (ASDM, ACLs, IPSEC VPNs) Experience working with Cisco Catalyst switches, CiscoNexus switches, Cisco ISR and ASR routers, and Cisco ISE Understanding of network-level encryption Strong experience with Juniper leaves spines and switches F5 Load Balancers Cisco ISE Appliance Catapans If you'd like to discuss this 3rd line Network Engineer role in more detail, please send your updated CV More ❯
routing (BGP, OSPF, static routing, HSRP, VRF, tunneling protocols) Solid understanding of Layer 2 technologies (VLANs, port-security, 802.1X, spanning-tree) Experience with firewalls - Cisco Firepower, Cisco ASA and related features (ASDM, ACLs, IPSEC VPNs) Experience working with Cisco Catalyst switches, CiscoNexus switches, Cisco ISR and ASR routers, and Cisco ISE Understanding of network-level encryption Strong experience with Juniper leaves spines and switches F5 Load Balancers Cisco ISE Appliance Catapans Company Benefits: 25 Days annual leave plus public holidays (3 flexible) Pension - Double matching contributions of up to 10% Life More ❯
OSPF, static routing, HSRP, VRF, tunneling protocols). Solid understanding of Layer 2 technologies (VLANs, port-security, 802.1X, spanning-tree). Experience with firewalls - Cisco Firepower, Cisco ASA and related features (ASDM, ACLs, IPSEC VPNs). Experience working with Cisco Catalyst switches, CiscoNexus switches … Cisco ISR and ASR routers, and Cisco ISE. Understanding of network-level encryption. Strong experience with Juniper leaves spines and switches. F5 Load Balancers. Cisco ISE Appliance. Catapans. Company Benefits: 25 Days annual leave plus public holidays (3 flexible). Pension - Double matching contributions of up to More ❯
CIS) team within Network Operations The team is responsible for providing 3rd Line support for the platforms within our control with a focus on Cisco, Fortinet and F5 technologies . (We are looking for candidates with at least 2 of these core technologies) You will be responsible and accountable … encourage you to be your authentic self throughout your application journey with us. The must haves Extensive experience in supporting Data Centre network infrastructure, Cisco (Nexus Fixed and Modular , ASR, ASA, Firepower, ISR, Catalyst), F5 (LTM, GTM, AFM, AWAF) and Fortinet. Operating, configuring and troubleshooting NXOS, IOS XE … IP, Routing, L2/L3 Switching and the OSI model. Certifications or suitable real-world experience to cover one or more of the below: Cisco, CCNP Data Centre , Cisco CCNP Security F5 Technical Certified Technical Specialist in one or more tracks, LTM, DNS, ASM or APM Fortinet NSE More ❯
role, you will design, implement, and maintain critical networking infrastructure while driving automation and efficiency. Key Responsibilities: Oversee the design, implementation, and maintenance of Cisco ACI infrastructure. Develop automation solutions for network tasks using Python, Ansible, and Terraform. Engineer and support enterprise-grade network systems, including Cisco routers … Nexus data centre switches, and wireless LAN controllers. Configure and manage Palo Alto firewalls, ensuring adherence to security standards. Deploy and administer network access control solutions with Cisco ISE (802.1x and TACACS). Optimize uptime and performance using F5 Big-IP load balancers. Design and manage advanced routing … global, 24/7 enterprise environment while mentoring junior team members. Provide occasional weekend and on-call support. What You Bring: Extensive experience with Cisco networking, including routers, switches, and wireless infrastructure. Deep understanding of Palo Alto firewalls, Panorama, and security tools such as Cisco ISE. Hands-on More ❯
role, you’ll design, implement, and maintain critical networking infrastructure while driving automation and efficiency. Key Responsibilities: Oversee the design, implementation, and maintenance of Cisco ACI infrastructure. Develop automation solutions for network tasks using Python, Ansible, and Terraform. Engineer and support enterprise-grade network systems, including Cisco routers … Nexus data centre switches, and wireless LAN controllers. Configure and manage Palo Alto firewalls, ensuring adherence to robust security standards. Deploy and administer network access control solutions with Cisco ISE (802.1x and TACACS). Optimise uptime and performance using F5 Big-IP load balancers. Design and manage advanced … global, 24/7 enterprise environment while mentoring junior team members. Provide occasional weekend and on-call support. What You Bring: Extensive experience with Cisco networking, including routers, switches, and wireless infrastructure. Deep understanding of Palo Alto firewalls, Panorama, and security tools such as Cisco ISE. Hands-on More ❯
role, you’ll design, implement, and maintain critical networking infrastructure while driving automation and efficiency. Key Responsibilities: Oversee the design, implementation, and maintenance of Cisco ACI infrastructure. Develop automation solutions for network tasks using Python, Ansible, and Terraform. Engineer and support enterprise-grade network systems, including Cisco routers … Nexus data centre switches, and wireless LAN controllers. Configure and manage Palo Alto firewalls, ensuring adherence to robust security standards. Deploy and administer network access control solutions with Cisco ISE (802.1x and TACACS). Optimise uptime and performance using F5 Big-IP load balancers. Design and manage advanced … global, 24/7 enterprise environment while mentoring junior team members. Provide occasional weekend and on-call support. What You Bring: Extensive experience with Cisco networking, including routers, switches, and wireless infrastructure. Deep understanding of Palo Alto firewalls, Panorama, and security tools such as Cisco ISE. Hands-on More ❯
Job Overview: We are seeking an experienced Senior Network Engineer with deep expertise in Cisco ACI, SDN technologies, and broader traditional networking and security solutions. The successful candidate will be responsible for the design, implementation, automation, and operational support of complex network infrastructures, ensuring high availability and performance across … candidates with active SC Clearance will be considered. This role is Inside IR35. Key Responsibilities: Lead and support the deployment, configuration, and management of Cisco ACI SDN and MSO environments. Provide operational support and troubleshooting for Cisco networking and security appliances including Nexus, Catalyst switches, and Firepower … initiatives. Collaborate cross-functionally with infrastructure, security, and application teams. Minimum Qualifications: Active SC Clearance (mandatory). Deep knowledge and hands-on experience with Cisco ACI SDN and MSO (development and operations). Certification in Cisco networking (minimum CCNP level) or equivalent industry experience. Proven experience with traditional More ❯
Science, Engineering, or related field Certifications such as CCNA, CCNP required; Cloud (AWS, Azure), ITIL, or Project Management certifications preferred Technical Skills: Expertise with Cisco (Routing, Switching, Nexus, ACI, Firepower), Zscaler, Checkpoint, Brocade, and Tufin Familiarity with SDN, SD-WAN, and SASE architectures Strong scripting and automation skills … e.g., Python, Ansible) Experience with Windows and Linux-based environments Professional Experience: Proven experience supporting and implementing network infrastructure using Cisco and Checkpoint technologies Hands-on troubleshooting of complex network issues, including collaboration with cross-functional and vendor teams Experience designing and deploying Tufin-based network access controls More ❯
Minimum Criteria • Deep knowledge of Cisco ACI SDN and MSO, across development and operations • Certification in Cisco networking to CCNP level, or with equivalent industry experience • Experience of traditional Cisco networking and security appliances – Nexus, Catalyst, ACI, Firepower/ASA, etc. Good knowledge of at least … of these areas: 1. Cisco ACI 2. Wireless networking 3. F5 load balancing (BigIP, BigIQ) 4. Cisco campus networking 5. Firewalls and Flow Analyzers – Checkpoint, Cisco Firepower, Algosec 6. Infoblox Suite (IPAM, DNS, DHCP) 7. Network Monitoring/Management Tools such as Entuity, PRTG More ❯
reliability, and accelerating deployment. You’ll diagnose complex WAN issues, automate deployments, and manage next-gen data centre environments built on VXLAN-EVPN fabrics (Cisco & Arista), all while collaborating in an agile, highly technical environment. ⚙️ Tech You’ll Be Working With VXLAN-EVPN (Cisco & Arista) Nexus Dashboard More ❯
london (west drayton), south east england, United Kingdom
Hamilton Barnes 🌳
plus 1-hour break - Flexible starts between 8–11am Key Responsibilities: Design, implement, and manage networking solutions (routing, switching, firewalls) Support core network infrastructure: Cisco Catalyst 9200/9300 , Nexus 5000 , FTD under FMC , FortiGate Participate in Weekend support (1 in 5 weekends) with time-off in lieu … across live broadcast studios and data centres Experience Required: Must-Haves: CCNP-level knowledge or equivalent 5–10 years of hands-on experience with Cisco routers, switches, firewalls Strong background in network design Extensive BGP Experience Nice-to-Haves: Basic Linux CLI Network automation experience Multicast/Production/ More ❯