Senior Network Engineer (Squid Proxy & Palo Alto Security)

The successful candidate will be responsible for the design, implementation, administration, and optimisation of secure web access platforms, proxy services, and next-generation firewall infrastructures. The role will focus on delivering secure, resilient, and compliant network services while supporting business-critical customer environments., Squid Proxy Administration

• Design, implement, configure, and support Squid Proxy environments.
• Manage forward, reverse, and transparent proxy deployments.
• Configure and maintain ACLs, authentication services, and content filtering policies.
• Implement SSL inspection and certificate management solutions.
• Optimise proxy performance, caching, and web traffic handling.
• Support proxy migrations, upgrades, and platform refresh activities.
• Analyse proxy logs and user traffic patterns to improve service performance and security.

Palo Alto Firewall Administration

• Deploy, configure, and support Palo Alto Networks NGFW solutions.
• Design, implement, and maintain security policies aligned to business and customer requirements.
• Manage policy lifecycle including rule creation, optimisation, review, and cleanup.

Security & Compliance

• Implement and maintain enterprise security controls.
• Support vulnerability remediation programmes.
• Participate in security audits and compliance assessments.
• Ensure proxy and firewall services comply with internal and customer security standards.
• Support Cyber Security teams during incident investigations and threat analysis.
• Monitor security alerts and recommend remediation actions., Proxy Services
• Squid Proxy Administration
• ACL Configuration
• SSL Bump / Inspection
• Kerberos Authentication
• NTLM Authentication
• LDAP Integration
• Proxy High Availability
• Web Filtering

We are seeking an experienced Senior Network Engineer with deep expertise in Squid Proxy, Palo Alto Networks Next-Generation Firewalls (NGFW), and Application Identification (App-ID) technologies to support, maintain, and enhance enterprise network security services., This position requires strong troubleshooting skills, security-focused thinking, and extensive experience with web proxy technologies, application visibility, policy-based security controls, and enterprise networking., * 5+ years supporting enterprise networking environments.

• Proven operational experience with Palo Alto Networks firewalls.
• Demonstrable experience implementing and managing App-ID security policies.
• Strong experience supporting Squid Proxy environments.
• Experience with security-focused network design and troubleshooting.
• Experience working in highly secure or regulated environments.
• Experience supporting production and customer-facing services., * Palo Alto PCNSA or equivalent experience.
• CCNA / CCNP Enterprise.
• ITIL Foundation.

Desirable

• Palo Alto PCNSE.
• CISSP.
• CompTIA Security+.
• Azure Network Engineer Associate.
• Red Hat Certified System Administrator (RHCSA)