SISL Global
Senior Network Security Engineer
London
Posted about 23 hours ago
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Network Product & Engineering Team
Senior Network Security Engineer
Purpose of the role
The Senior Network Security Engineer is responsible for supporting the design, configuration, monitoring, and maintenance of network security hardware, systems, and software; including preparing any documentation for future reference and ensuring communication regarding network security and other issues is provided timely.
Accountabilities
- Be the lead technical role in resolving complex service incidents, applying diagnosis, maintenance, change, and configuration control attributes to bring about a resolution.
- Consistently perform and deliver outputs within the service contract time constraints (KPI’s & OLAs/SLA’s).
- Apply technical governance to inbound deliveries from the project design phase to ensure they accurately reflect the live environment and are appropriately structured to enable successful technical service delivery.
- Develop and implement detailed logical designs in areas of – Firewalls, Load balancers, Layer 3 VPN, Layer 2 VPN.
- Analyse traffic behaviors, identify, and resolve any congestion or traffic issues related to network security hardware or protocols.
- Develop secure network designs, maximizing the usage of equipment such as routers and switches.
- Monitor network performance to determine whether adjustments need to be made, and to determine where changes will need to be made in the future.
- Work with internal and external stakeholders to fill information gaps and communicate architecture and technical solutions.
- Establish procedures and best practices for network security operations.
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Key Stakeholders
External:
- Strategic and operational third-party partners
- IAG Operating Companies
Internal:
- Network Product Manager
- Network Support Manager
- Network Solutions Architecture Manager
- Senior Network Engineers
- Capacity, Release & Deployment Manager
- Network Services Manager
- Network Operations Centre Engineers
- Tooling Engineer
- Governance and Reporting Manager
People Specification
Qualifications
- Educated to degree level or equivalent experience.
- Desired qualification: Bachelor’s degree in computer science, Information Technology, or a related field.
- Relevant industry certifications such as:
- CISSP (Certified Information Systems Security Professional)
- CCNP (Cisco Certified Network Professional) Security certification, or equivalent knowledge and experience.
- Check Point Certified Security Administrator (CCSA)
- F5 Certified Technical Specialist (BIG-IP)
Skills
- Strong technical competence in Networking security
- Maintaining and updating firewalls and testing the organization’s network and systems - essential
- Knowledge and experience installing and supporting Checkpoint and F5 Appliances, and Cisco ISE - desirable
- Implementing network security blueprints prepared by security architects - essential
- Strong skills in interpreting, producing, and tracking technical documentation.
- Strong communications skills within a department to provide confidence and direction to level 2 colleagues.
- Ability to communicate effectively verbally and written with stakeholders at all levels, from end users to project managers, etc., and provide information which will support and influence the decision-making process within the Network Service Management.
- Ability to plan, prepare, and organize large scale implementations and project deliveries.
- Strong problem-solving skills. Able to identify and resolve problems timely, gather and analyze information effectively, and develop alternative solutions where appropriate.
- Strong interpersonal skills. Maintain confidentiality and listen to others.
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Experience
- 5+ years’ experience required in a similar role.
- Experience in designing, deploying, and maintaining MPLS, VPN, and VRF network cores.
- Functional understanding of Layer 2 functions and switching (VLAN, VXLAN, STP, MAC Filtering, etc.).
- Experience with VoIP.
- Experience with Cisco, Juniper, and Palo Alto preferred.
- Knowledge of industry standard network systems designs and implementation.
- Knowledge of security and communications networks; and knowledge of technical and user-related aspects of a personal computer environment preferred.
- Experience with the following preferred: DNS, DHCPv4, DHCPv6, or IPAM/DDI.
Scope of the role
- Reporting to: Network Product Manager
- Department: Network Product Management & Engineering
- Location: Based in UK, ideally within travelling distance of Heathrow
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Skills
Network Security
Firewall Management
Load Balancers
VPN Configuration
Traffic Analysis
Network Design
Technical Documentation
Problem Solving
Stakeholder Communication
Cisco ISE
Checkpoint
F5 BIG-IP
MPLS
VRF
Layer 2 Switching
VoIP
Location