Network Security SME - Juniper , Cisco , Zscaler Fortinet
Posted Today by Lakarya
Negotiable
Undetermined
Hybrid
London Area, United Kingdom
Summary: The Network Security Engineer role in London focuses on maintaining the operational stability, resilience, security, and compliance of enterprise network services within a highly regulated environment. The position requires hands-on expertise in enterprise networking, incident management, and network automation. The engineer will serve as a senior technical authority for critical incidents and collaborate with various teams to ensure reliable network services. This contract position demands strong technical skills and experience in managing complex network infrastructures.
Key Responsibilities:
- Own operational stability, resilience, and compliance of enterprise network services in a global regulated environment
- Configure, deploy, and support enterprise network hardware including Infoblox and core network platforms
- Act as senior technical authority and escalation point for critical network incidents and service issues
- Perform root cause analysis, permanent remediation, and measurable reduction of repeat incidents
- Ensure safe, production-ready network changes through strong governance, risk control, and change discipline
- Embed design-for-run and reliability engineering standards into network services from inception
- Lead automation and standardization initiatives to improve resilience, recovery times, and operational efficiency
- Partner with Product, Architecture, Security, and Service Management teams to deliver scalable and reliable network services
- Support enterprise network technologies across Cisco, Juniper, Infoblox, Zscaler, and Fortinet platforms
- Maintain documentation, operational procedures, and technical standards for network services
Key Skills:
- Strong experience in enterprise network engineering and operations within large-scale environments
- Deep expertise in routing, switching, DNS/DHCP/IPAM, and network infrastructure management
- Hands-on experience with Cisco, Juniper, Infoblox, Zscaler, and Fortinet technologies
- Strong understanding of incident management, problem management, and production support processes
- Experience in regulated enterprise environments with strong compliance and governance requirements
- Knowledge of network automation, standardization, and service reliability engineering
- Ability to troubleshoot complex network issues and drive long-term remediation
- Strong stakeholder management and cross-functional collaboration skills
Salary (Rate): undetermined
City: London
Country: United Kingdom
Working Arrangements: hybrid
IR35 Status: undetermined
Seniority Level: undetermined
Industry: IT
Job Description Title: Network Security Engineer
Location: London, UK (Hybrid)
Employment Type: Contract
Position Overview
We are seeking experienced Network Security Engineer to join the enterprise network services team in London. The selected professionals will be responsible for ensuring operational stability, resilience, security, and compliance of enterprise network services within a global, highly regulated environment. This role requires strong hands-on expertise in enterprise networking, incident management, root cause analysis, network automation, and production-grade infrastructure support. The engineers will act as senior technical authorities and escalation points for critical incidents while partnering with architecture, security, and service management teams to deliver reliable and scalable network services.
Key Responsibilities
- Own operational stability, resilience, and compliance of enterprise network services in a global regulated environment
- Configure, deploy, and support enterprise network hardware including Infoblox and core network platforms
- Act as senior technical authority and escalation point for critical network incidents and service issues
- Perform root cause analysis, permanent remediation, and measurable reduction of repeat incidents
- Ensure safe, production-ready network changes through strong governance, risk control, and change discipline
- Embed design-for-run and reliability engineering standards into network services from inception
- Lead automation and standardization initiatives to improve resilience, recovery times, and operational efficiency
- Partner with Product, Architecture, Security, and Service Management teams to deliver scalable and reliable network services
- Support enterprise network technologies across Cisco, Juniper, Infoblox, Zscaler, and Fortinet platforms
- Maintain documentation, operational procedures, and technical standards for network services
Required Skills & Experience
- Strong experience in enterprise network engineering and operations within large-scale environments
- Deep expertise in routing, switching, DNS/DHCP/IPAM, and network infrastructure management
- Hands-on experience with Cisco, Juniper, Infoblox, Zscaler, and Fortinet technologies
- Strong understanding of incident management, problem management, and production support processes
- Experience in regulated enterprise environments with strong compliance and governance requirements
- Knowledge of network automation, standardization, and service reliability engineering
- Ability to troubleshoot complex network issues and drive long-term remediation
- Strong stakeholder management and cross-functional collaboration skills
Preferred Qualifications
- Experience working in banking, financial services, or other highly regulated industries
- Exposure to hybrid enterprise environments and global network operations
- Relevant certifications such as CCNA, CCNP, JNCIA, JNCIP, Fortinet NSE, or equivalent are desirable but not mandatory where hands-on experience is strong