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- Tasks: Manage and troubleshoot advanced network security systems to protect vital data.
- Company: Join N Consulting Ltd, a leader in innovative network security solutions.
- Benefits: Competitive salary, onsite work, and opportunities for professional growth.
- Why this job: Make a real difference in securing networks while working with cutting-edge technology.
- Qualifications: 7+ years in network security with expertise in Cisco and Check Point technologies.
- Other info: Dynamic team environment with opportunities to mentor and lead projects.
The predicted salary is between 48000 - 72000 £ per year.
Role: Senior Network Security Engineer (L4)
Experience: 7 years
Location: Guildford, UK
Work mode: Onsite
Key Responsibilities
- Security Infrastructure Operations & Engineering: Manage, configure, and troubleshoot Cisco ISE (TACACS+, RADIUS, Dot1X, CoA, Profiling). Administer and support Cisco ASA/FTD firewalls including ACLs, NAT, VPN, failover, clustering, and upgrades. Manage Check Point firewalls (R80.x) - policy management, clustering, VPN, logging, and health checks. Handle F5 APM for remote access VPN, SSO, authentication policies, and application access. Support data centre network security architecture (firewalls, segmentation, VRF, routing, switching security).
- Implementation, Installations & Decommissioning: Perform installation, configuration, and deployment of security devices (ASA/FTD, Check Point, ISE nodes, F5 APM). Lead hardware refresh, firewall replacement, and migration projects. Execute device decommissioning, ensuring proper cleanup of configs, rule removal, rack removal, and documentation. Conduct cutover activities, change execution, and post‐implementation validation.
- Project & Architecture Support: Participate in designing secure network architectures for enterprise and data centre environments. Work with cross‐functional teams to review network and security requirements. Create and maintain HLDs/LLDs, network diagrams, migration plans, and SOPs.
- Security Operations & Troubleshooting: Act as L4 SME for escalations related to network security issues. Troubleshoot identity/authentication failures, VPN issues, firewall packet drops, routing conflicts. Perform root‐cause analysis (RCA), remediation plans, and long‐term fixes. Monitor system health, logs, and alerts across multiple platforms.
- Governance, Compliance & Best Practices: Ensure compliance with security standards (ISO 27001, NIST, PCI‐DSS, CIS benchmarks). Conduct periodic rule/policy optimisation, cleanup, and audits. Maintain device firmware/software to secure and supported versions. Document operational procedures and provide knowledge transfer to L1/L2 teams.
Required Skills & Experience
- Technical Skills: Cisco ISE (expert level) - Authentication policies, authorization profiles, profiling, certificates, device onboarding. Cisco ASA/FTD - VPN, NAT, ACL, clustering, routing, packet tracer, Firepower Management Center (FMC). Check Point R80.x - SmartConsole, VPN, IPS, rule optimisation, HA/cluster. F5 APM - Access policy creation, VPN configuration, SAML/OAuth integration. Cisco Switching/Routing in DC environment - Nexus (5k/7k/9k), VLANs, VPC, OSPF/BGP basics. Packet capture tools: Wireshark, tcpdump. Cloud networking (AWS/Azure) is a plus. Automation/Scripting knowledge (Python, Ansible) preferred but not mandatory.
- Experience: 6-10+ years of strong experience in enterprise Network Security. Experience working in large, distributed, high‐availability environments. Proven track record of leading install, upgrade, migration, and decommission projects. Experience in handling major incidents and RCA documentation.
- Soft Skills: Excellent communication and documentation skills. Strong analytical and troubleshooting capability. Ability to lead changes independently and collaborate with global teams. Ability to mentor junior engineers.
Senior Network Security Engineer at N Consulting Ltd in London employer: N Consulting Ltd
Contact Detail:
N Consulting Ltd Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Network Security Engineer at N Consulting Ltd in London
✨Tip Number 1
Network, network, network! Get out there and connect with people in the industry. Attend meetups, webinars, or even just grab a coffee with someone who works in network security. You never know who might have a lead on your dream job!
✨Tip Number 2
Show off your skills! Create a portfolio or a personal project that highlights your expertise in Cisco ISE, ASA/FTD, or Check Point firewalls. This can really set you apart from other candidates when you’re chatting with potential employers.
✨Tip Number 3
Don’t just apply for jobs; tailor your approach! When you find a role that excites you, make sure to research the company and mention specific projects or values that resonate with you during interviews. It shows you’re genuinely interested and not just sending out cookie-cutter applications.
✨Tip Number 4
Use our website to apply! We’ve got loads of resources to help you prepare for interviews and showcase your skills effectively. Plus, applying through us means you’ll be in the loop for any updates or tips we share along the way!
We think you need these skills to ace Senior Network Security Engineer at N Consulting Ltd in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Senior Network Security Engineer role. Highlight your experience with Cisco ISE, ASA/FTD firewalls, and any relevant projects you've led. We want to see how your skills match up with what we're looking for!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about network security and how your background makes you a perfect fit for our team. We love seeing enthusiasm and a bit of personality!
Showcase Your Achievements: Don’t just list your responsibilities; showcase your achievements! Include specific examples of how you've improved security operations or led successful projects. We appreciate candidates who can demonstrate their impact.
Apply Through Our Website: We encourage you to apply through our website for the best chance of getting noticed. It’s super easy, and we’ll be able to track your application better. Plus, it shows us you’re serious about joining our team!
How to prepare for a job interview at N Consulting Ltd
✨Know Your Tech Inside Out
Make sure you’re well-versed in the specific technologies mentioned in the job description, like Cisco ISE and Check Point firewalls. Brush up on your knowledge of TACACS+, RADIUS, and VPN configurations, as these will likely come up during technical questions.
✨Showcase Your Project Experience
Prepare to discuss your past projects in detail, especially those involving installations, upgrades, and migrations. Be ready to explain your role, the challenges you faced, and how you overcame them, as this will demonstrate your hands-on experience and problem-solving skills.
✨Understand Compliance Standards
Familiarise yourself with security standards like ISO 27001 and PCI-DSS. Be prepared to discuss how you've ensured compliance in previous roles, as this shows you understand the importance of governance in network security.
✨Practice Your Communication Skills
Since excellent communication is key for this role, practice explaining complex technical concepts in simple terms. This will help you convey your ideas clearly during the interview and show that you can mentor junior engineers effectively.
