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For Companies At a Glance
- 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: Attractive salary, career growth, and a chance to work with cutting-edge technology.
- Why this job: Make a real difference in securing networks while collaborating with global teams.
- Qualifications: 7+ years in network security with expertise in Cisco and Check Point technologies.
- Other info: Dynamic work environment with opportunities for mentorship and professional development.
The predicted salary is between 48000 - 72000 ÂŁ 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 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
✨Tip Number 1
Network with industry professionals! Attend local meetups or online webinars related to network security. This way, we can get our name out there and potentially find job leads through connections.
✨Tip Number 2
Show off your skills in practical ways! Consider setting up a home lab to demonstrate your expertise with Cisco ISE, ASA/FTD, and Check Point firewalls. We can share our projects on platforms like GitHub to catch the eye of recruiters.
✨Tip Number 3
Prepare for interviews by brushing up on common scenarios! We should practice explaining how we've handled major incidents or led migration projects. Real-life examples will help us stand out during those crucial conversations.
✨Tip Number 4
Don’t forget to apply through our website! It’s a great way to ensure our application gets noticed. Plus, we can tailor our approach based on the specific roles we’re interested in at N Consulting Ltd.
We think you need these skills to ace Senior Network Security Engineer at N Consulting Ltd
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 Check Point firewalls. We want to see how your skills match up with what we're looking for!
Showcase Your Projects: When you write your application, don’t forget to mention specific projects you've led or been a part of. We love seeing real examples of your work, especially those involving installations, upgrades, and migrations in network security.
Be Clear and Concise: Keep your application clear and to the point. Use bullet points where possible to make it easy for us to read through your experience and skills. We appreciate straightforward communication!
Apply Through Our Website: Finally, make sure to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. We can’t wait to hear from you!
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, ASA/FTD, and Check Point firewalls. Brush up on your knowledge of authentication policies, VPN configurations, and troubleshooting techniques, 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. This will demonstrate your hands-on experience and problem-solving skills.
✨Communicate Clearly and Confidently
Since excellent communication is key for this role, practice articulating your thoughts clearly. Use examples from your experience to illustrate your points, and don’t hesitate to ask clarifying questions if you need more information during the interview.
✨Understand Compliance Standards
Familiarise yourself with security standards like ISO 27001 and PCI-DSS, as well as best practices in network security. Be prepared to discuss how you’ve ensured compliance in previous roles and how you would approach governance in this new position.
