Network Security Consultant

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

Job summary

A leading cyber security consultancy in Greater London is seeking a Network Security Consultant for a 12-month contract. The role involves designing, implementing, and improving Palo Alto firewall environments, focused on public sector security programmes. Candidates must hold active SC Clearance and have a strong background in network security solutions. The position offers a competitive rate of £600-£700 per day with a hybrid work model, requiring only 1-2 days on-site per week.

Qualifications

• Proven experience delivering security solutions in project or consultancy environments.
• Strong understanding of firewall technologies, network security, and enterprise networking.
• Active SC clearance is mandatory.

Responsibilities

• Design, implement, configure and support Palo Alto environments.
• Deliver firewall deployments and migrations from legacy platforms.
• Provide centralized firewall management using Panorama.
• Define and implement security policies and routing.

Skills

Palo Alto Strata

Panorama

Security solutions delivery

Network security

Firewall technologies

Job description

Overview

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