Cameron Kennedy
Cyber Security Network Engineer
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Cyber Security Network Engineer
Location
London
About the Role
A UK-based bank is looking for a motivated, hands-on and experienced Cyber Security Network Engineer with experience in the banking industry, ideally with Oracle FLEXCUBE and Oracle Banking Digital Experience (OBDX).
This role owns the bank's technical security posture, protects systems from cyber threats, and manages perimeter and application security platforms. It bridges the gap between infrastructure engineering and threat management, ensuring high availability, robust defence-in-depth, and strict regulatory compliance across all banking networks.
Responsibilities
Vulnerability Management
- Run regular vulnerability scans across networks, applications, and endpoints
- Triage findings based on business risk and CVSS scores
- Coordinate rapid remediation with IT operations teams
- Track and report on vulnerability lifecycle KPIs for senior leadership and regulators
- Validate patch effectiveness via follow-up scans
Security Infrastructure Ownership
- Manage and maintain Cisco Firepower next-generation firewalls (rule set architecture, IPS/IDS tuning, URL filtering, malware protection)
- Administer F5 WAF (Advanced WAF/ASM) to protect online banking portals, API endpoints and mobile banking backends against OWASP Top 10, credential stuffing and bot attacks
- Manage Citrix ADC/NetScaler load balancers, including TLS/SSL configuration and secure session management
- Maintain Remote Access VPNs, site-to-site IPsec tunnels and NAC policies to enforce micro-segmentation
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Threat Detection & Response
- Monitor, analyze and triage SIEM alerts as a technical escalation point for the SOC
- Develop and tune detection use cases, correlation rules and alert logic
- Support incident response (containment, eradication, recovery) during active network-level incidents
Security Hardening & Architecture
- Establish and enforce secure configuration baselines (e.g. CIS Benchmarks) across Windows, Linux/Unix and network devices
- Design and audit zone-based network segmentation to isolate critical banking environments (SWIFT, card processing, core banking) from untrusted networks
Change Management Governance & Discipline
- Author detailed change requests with technical steps, impact assessments and zero-downtime execution windows
- Execute rigorous pre-implementation testing, design fail-safe rollback procedures, and lead peer reviews for complex network and security changes
Project Security & Compliance
- Perform security reviews and threat modelling for new infrastructure projects and cloud migrations
- Coordinate annual penetration testing with external vendors and track remediation
- Ensure network security controls align with industry standards and regulatory requirements
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Requirements
- 5+ years of network engineering experience with a heavy focus on cyber security, ideally within a regulated financial institution or enterprise environment
- Proven hands-on experience configuring and troubleshooting Cisco Firepower, F5 ASM/WAF, and Citrix NetScaler
- Strong understanding of core networking protocols (BGP, OSPF, EIGRP), the TCP/IP stack, and cryptographic protocols (TLS 1.3, SSH, IPsec)
- Strong collaborative skills working alongside IT Infrastructure and DevOps teams
- Excellent technical writing skills for clear, compliant security documentation and architecture diagrams
Desired Certifications
- CISSP, CISM, or CEH
- CCNP Security, Cisco Certified Specialist – Network Security Firepower, F5-CA/F5-CTS, or Citrix Certified Professional – Networking (CCP-N)
If you're a security-focused network engineer who thrives at the intersection of infrastructure and threat management, we'd love to hear from you.
Apply now or send a message to find out more.
#CyberSecurity #NetworkSecurity #InfoSec #BankingIT #Firewall #Hiring #LondonJobs
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