Senior Network Security Engineer

SISL Global; West Drayton; On-site; GBP 75,000 - 110,000; Full time

Job summary

SISL Global is seeking a Senior Network Security Engineer to design, configure, monitor and maintain network security hardware, systems and software. You will prepare documentation and ensure timely communication on security issues.

Responsibilities include leading complex incident resolutions, implementing secure designs across firewalls, VPNs and load balancers, and driving governance from design to live environments.

Qualifications

• Experience in designing and maintaining network security architectures.
• Proven ability to resolve complex incidents quickly.

Responsibilities

• 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 (KPIs & OLAs/SLA’s).
• Apply technical governance to inbound deliveries from the project design phase to ensure they reflect the live environment.
• Develop and implement detailed logical designs in areas such as Firewalls, Load balancers, VPN.
• Analyse traffic behaviours, identify congestion or traffic issues related to network security hardware or protocol.
• Develop secure network designs, maximizing the usage of routers and switches.
• Monitor network performance 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 solution.
• Establish procedures and best practices for network security operation.

Skills

Network security

Firewalls

Load balancers

VPN

Monitoring

Incident response

Tools

Cisco ASA

Firepower

Job description

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 resolutio
• 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 deliver
• Develop and implement detailed logical designs in areas of – Firewalls, Load balancers, Layer 3 VPN, Layer 2 VP
• Analyse traffic behaviours, identify and resolve any congestion or traffic issues related to network security hardware or protocol
• Develop secure network designs, maximizing the usage of equipment such as routers and switche
• Monitor network performance to determine whether adjustments need to be made, and to determine where changes will need to be made in the futur
• Work with internal and external stakeholders to fill information gaps and communicate architecture and technical solution
• Establish procedures and best practices for network security operation