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Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates expert knowledge in next-generation firewalls, TCP/IP, and complex network environments, with a strong focus on incident management, technical assurance, and vendor engagement. Proven ability to lead investigations, implement changes, and ensure compliance with ISO/IEC 27001 standards.
Highest-signal resume keywords
Next-Generation Firewall ExpertiseTCP/IP And Routing KnowledgeIncident Management And Problem ResolutionVendor Engagement And CoordinationTechnical Writing And Communication Skills
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
Next-Generation FirewallsTCP/IPRouting And SwitchingDNSDHCPLAN/WANSD-WANIPSECSIPIncident Management
Soft Skills
Stakeholder ManagementTechnical Judgement Under PressureCoaching And Knowledge SharingCommunication SkillsDependable On-Call Support
Tools & Technologies
FortinetMerakiCiscoJuniperMPLSCloud ServicesVPNHigh Availability SolutionsManagement PlatformsRunbooks
Certifications & Qualifications
ISO/IEC 27001 Compliance
Industry Keywords
Service ContinuityOperational RiskChange ManagementTechnical AssuranceRemote AccessWeb SecurityNetwork SegmentationVulnerability ManagementPatch ManagementProofs of Concept
Tech Stack
Tools & technologiesCloudDNSFirewallsSwitchingTCP/IP
About the role
Key responsibilities & impact- Act as the third-line authority for Data/Security/Voice Services and the final escalation before vendor engagement
- Resolve complex firewall, VPN, routing, connectivity, high-availability, policy, and management-platform incidents
- Assess incident scope, impact, priority, contributing factors, and the path to service restoration
- Analyse logs, packet captures, sessions, routing, configurations, and device health
- Investigate dependencies across WAN, LAN, DNS, DHCP, authentication, cloud, MPLS, SIP, and remote-access services
- Own complex incidents through investigation, recovery, validation, communication, and closure
- Plan, implement, validate, and document approved firewall changes and deployments
- Review change risk, dependencies, implementation steps, testing, and rollback plans
- Provide escalation support, technical guidance, and knowledge sharing to second-line teams
- Engage vendors with clear evidence and coordinate their activity through resolution
- Maintain investigation records, change outcomes, known errors, runbooks, and technical documentation
- Work with customers, suppliers, stakeholders, and technical teams to coordinate service delivery
- Support reporting, technical assurance, problem investigation, and continuous service improvement
- Support ISO/IEC 27001 compliance through evidence, reviews, and control improvements
- Configure and expand networks, services, and applications
- Lead vulnerability, patch, and release management activities
- Design and develop project-specific network and security architecture solutions
- Deliver security consulting and professional services engagements, including advanced Proofs of Concept (PoCs)
- Participate in the on-call rota for critical incidents and planned changes when required
Requirements
What you’ll need- Expert knowledge of next-generation firewalls, including policies, NAT, VPN, routing, high availability, security profiles, and centralised management
- Advanced knowledge of TCP/IP, routing and switching, DNS, DHCP, LAN/WAN, SD-WAN, IPSEC, SIP, and the OSI model
- Strong understanding of remote access, DMZs, cloud connectivity, authentication, web security, and network segmentation
- Expert diagnostic skills using logs, packet captures, sessions, routing tables, configurations, and device-health data
- Detailed knowledge of incident, problem, and change management
- Strong understanding of operational risk, service continuity, rollback, recovery, and technical assurance
- Significant third-line experience supporting complex next-generation firewall environments, preferably Fortinet and Meraki
- Significant third-line experience supporting complex network/MPLS environments, preferably Cisco and Juniper (JUNOS)
- Proven ownership of high-impact incidents from deep investigation through recovery, root-cause identification, and closure
- Experience planning and deploying complex firewall and network changes with clear validation, risk, and rollback controls
- Ability to analyse issues beyond the firewall and coordinate resolution across network, infrastructure, cloud, and supplier teams
- Sound technical judgement under pressure during critical service incidents
- Experience engaging vendors with complete evidence and driving technical cases through to resolution
- Strong communication, stakeholder management, technical writing, and customer-facing skills
- Proven ability to coach second-line teams, share knowledge, and improve runbooks and operational practices
- Commitment to continuous professional development and maintaining current, expert-level technical knowledge
- Ability to manage competing priorities and provide dependable on-call support for critical incidents and changes
Benefits
Comp & perks- Competitive salary
- Flexible Working
- Rewards & Benefits
- Wellbeing support
- Opportunity to participate in professional development and maintain current technical knowledge
- On-call support compensation is not specified