L3 Network Engineer – Security Proxy, Juniper, Cisco

Location: London Heathrow Waterside

Contract 12 months

Experience: 6-10+ years

Job Responsibilities:

Provide L3-level support, troubleshooting, and resolution for complex network issues.
Design, implement, and optimize network security solutions using security proxies, Juniper, and Cisco.
Lead incident resolution and problem management efforts, coordinating with vendors as needed.
Configure and maintain firewalls, security appliances, and access control policies.
Develop and execute network automation strategies for efficiency and scalability.
Collaborate with architects and project teams on network upgrades and expansions.
Conduct performance tuning and capacity planning for network infrastructure.
Mentor and provide technical guidance to L2 engineers.

Technical Skills:

Security Proxy: Blue Coat, Zscaler, or equivalent, deep understanding of SSL decryption and policy enforcement.
Juniper: Advanced routing (BGP, OSPF, ISIS), firewall rules, security policies, IDS/IPS.
Cisco: Enterprise switching (Nexus, Catalyst), routers, ASA/FTD firewalls, SD-WAN.
Automation & Scripting: Python, Ansible, Terraform (preferred).
Cloud Networking: Azure, AWS, or GCP networking and security concepts.
Load Balancing: F5, Citrix NetScaler (preferred).
SIEM & Security Tools: Splunk, Palo Alto Cortex, or similar.

Soft Skills:

Lakarya

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