Network Security Consultant

83zero Ltd; Greater London; Hybrid; GBP 100,000 - 125,000; Full time

Job summary

A leading cyber security consultancy is seeking a Network Security Consultant for a 12-month contract. The role focuses on delivering and optimising Palo Alto Strata and Panorama within public sector projects. Candidates must have proven experience with firewall technologies and hold active SC clearance. This is a senior, hands-on position involving design, implementation, and improvement of firewall environments, with a hybrid work model requiring 1-2 days on-site in London.

Qualifications

• Proven experience delivering security solutions in project or consultancy environments.
• Strong understanding of firewall technologies, network security, and enterprise networking.
• Must already hold active SC clearance.

Responsibilities

• Design, implement, configure and support Palo Alto Strata (NGFW) and Panorama environments.
• Deliver firewall deployments, upgrades and migrations from legacy platforms.
• Define and implement security policies, NAT, routing, VPNs, and security profiles.
• Troubleshoot complex network and security issues.
• Produce high-quality technical documentation.

Skills

Palo Alto Strata (Next-Generation Firewalls)

Panorama

Firewall technologies

Network security

Enterprise networking

Security solutions delivery

Job description

Overview

• Role: Network Security Consultant
• Contract: 12 months
• Rate: £600-£700 per day (Outside IR35)
• Location: London / Hybrid (1-2 days per week on-site)
• Sector: Public Sector
• Security Clearance: SC Cleared (mandatory)

83zero are partnered with a leading cyber security consultancy who are looking for an experienced Consultant to support a major public sector programme, focused on the delivery and optimisation of Palo Alto Strata (Next-Generation Firewalls) and Panorama.

This is a senior, hands-on consulting role working across complex, enterprise-scale environments, delivering secure and resilient network security solutions.

Please only apply if you have SC Clearance

Role Overview

You will be responsible for the design, implementation and ongoing improvement of Palo Alto firewall environments, supporting transformation and security uplift programmes across public sector organisations.

Key Responsibilities

• Design, implement, configure and support Palo Alto Strata (NGFW) and Panorama environments
• Deliver firewall deployments, upgrades and migrations from legacy platforms
• Provide centralised firewall management using Panorama
• Define and implement security policies, NAT, routing, VPNs, and security profiles
• Optimise firewall performance, security posture, and rule bases
• Troubleshoot complex network and security issues
• Produce high-quality technical documentation (HLDs, LLDs, implementation and handover documents)
• Work closely with technical teams and stakeholders in public sector environments

Essential Skills & Experience

• Palo Alto Strata (Next-Generation Firewalls)
• Panorama
• Proven experience delivering security solutions in project or consultancy environments
• Strong understanding of firewall technologies, network security, and enterprise networking
• Experience working in public sector or highly regulated environments
• Must already hold active SC clearance