Network Security Engineer

OpticoreIT; Greater London; Hybrid; GBP 65,000 - 90,000; Full time

Job summary

Opticore IT is seeking a Network Security Engineer to deliver project work for an enterprise broadcast media client. The role is a 12-month contract inside IR35, based in the London area with one day on site per week at White City.

You will implement Opengear remote management, configure Palo Alto firewalls, Proxmox tests, and manage Zscaler components, working with a PM and architect to ensure secure network designs and disaster recovery readiness.

Qualifications

• Experience delivering enterprise-grade network security projects.
• Hands-on with Opengear remote management.
• Knowledge of Palo Alto firewalls and Proxmox virtualization.
• Familiarity with Zscaler and disaster recovery processes.

Responsibilities

• Opengear remote management: diagnose and restore devices during outages.
• Palo Alto: configure, troubleshoot firewalls and NAT changes.
• Proxmox: build and maintain testing and DR virtual infrastructure.
• Disaster Recovery: follow DR plans and document actions taken.
• General security: day-to-day security support across the estate.
• Zscaler: understand ZPA/ZIA and triage basic issues; training provided.

Skills

Out-of-band management

Opengear

Disaster Recovery

Zscaler

BGP

Terraform / IaC

Tools

Palo Alto Firewalls

Proxmox

Opengear

Zscaler (ZPA/ZIA)

Job description

Opticore IT is a specialist Network Engineer and Project Management consultancy offering a wide variety of opportunities to work within fast-paced, challenging environments across our client base spanning multiple sectors including Finance, Broadcast Media, Telecommunications and more.

Opticore IT are currently searching for a Network Security Engineer to focus on executing project deliverables associated to the below workstreams. You'll join our excelling team, based in the London area for an initial 12-month contract inside IR35. This role requires one day onsite in White City per week.

This opportunity will work alongside a project manager and architect to implement approved designs across the cloud network for an enterprise level broadcast media organisation. This individual will take full ownership over the full Zscaler product suite.

What you'll be doing:

• Opengear: Remotely access, diagnose, and restore network devices when the main network is down; maintain the out-of-band path itself.
• Palo Alto: Configure, maintain, and troubleshoot firewalls, including policy and NAT changes.
• Proxmox: Build and maintain virtual infrastructure for testing and disaster recovery.
• Disaster Recovery: Follow the client's existing DRS during recovery work and DR testing; document actions taken.
• General security: Provide broad day-to-day support across the network security estate, escalating deeper specialist issues as needed.
• Zscaler: Understand how ZPA/ZIA fit into the network, triage basic issues (blocked sites, auth failures, outages). Basic training will be provided; deep Zscaler experience is not required or expected.

What you'll bring:

• Out-of-band management (Opengear) for remote device recovery
• Palo Alto Firewalls
• Proxmox/Linux Hypervisor
• Disaster Recovery Standard awareness/process discipline
• Zscaler (ZPA/ZIA/ZDX)
• BGP
• Terraform/Infrastructure-as-code

Diversity:

At Opticore IT we embrace diversity and are committed to equal opportunities. We actively recruit for an inclusive and diverse workforce and as such, want to ensure we do everything we can to support your application.

We want you to feel empowered to let us know if you require any adjustments to be made with your application or interview process.