Network Security Engineer

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 work streams. 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.

• 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.

• 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

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 so please speak to our recruitment team.