Network Engineer Networks London

We are currently seeking a Network Engineer to join our Network Practice within one of our Financial Services clients, working in an elite Operations Team. This is a hybrid position requiring attendance at the office up to 3 days a week, based in Central London.

Opticore IT is a rapidly expanding specialist Network Engineer and Project Management consultancy offering opportunities to work within challenging environments across sectors including Finance, Broadcast Media, Telecommunications, and more.

Exciting opportunity for a Network Engineer to take responsibility for maintaining and supporting complex Data Centre network environments, specifically built on Leaf & Spine topologies with VXLAN overlays using Cisco and Arista infrastructure.

What you'll be doing:

• Operate, support, and maintain network infrastructure in enterprise-grade Data Centres (Leaf-Spine topologies with VXLAN)
• Perform deep packet inspection and analysis using Wireshark and other network analysis tools
• Troubleshoot complex Layer 2 and Layer 3 network issues in real time
• Configure and manage Cisco and Arista network devices
• Operate and manage Fortigate and Palo Alto firewalls within the Data Centre environment
• Participate in network automation initiatives; write and maintain Python scripts for routine tasks and monitoring
• Support BGP and OSPF routing configurations and perform ongoing optimization and issue resolution
• Document network infrastructure, changes, and procedures

What you'll bring:

• CCNP or equivalent experience level
• Solid hands-on experience with Cisco and Arista Data Centre environments
• In-depth understanding of Leaf & Spine architectures and VXLAN
• Strong protocol knowledge and practical experience with BGP and OSPF
• Some Firewall experience (Fortigate and Palo Alto preferred)
• Ability to script in Python for basic automation tasks and data parsing
• Some understanding of infrastructure automation concepts (e.g., Ansible, Git desirable)

What you'll gain:

At Opticore IT, we believe in investing in our team. We support your learning and development through training, labs, courses, and shared knowledge, all free of charge. We also offer:

• Competitive Salary & discretionary bonus
• 23 days holiday + bank holidays
• Private healthcare & dental
• Pension
• EV car, workplace nursery, tech, and cycle-to-work schemes
• Team & Company Social events
• EMI share scheme

Diversity:

At Opticore IT, we embrace diversity and are committed to equal opportunities. We support your application and encourage you to inform us if you require any adjustments during the application or interview process.