Network Security Engineer

Zscaler (ZPA/ZIA)

Location:

London, UK (Hybrid

1 day onsite per week) Type:

Contract (6 months) |

Day Rate:

£550 Inside IR35 (Negotiable) Start Date:

ASAP

About the Role Our client, a leading global organization, is seeking an experienced

Network Security Engineer

with deep hands-on expertise in

Zscaler ZPA and ZIA

to join a global enterprise security transformation programme. The role will focus on designing, deploying, and managing secure cloud and on-premises access solutions, ensuring robust security posture and compliance across a large-scale hybrid environment. This is a

high-impact technical role

where you will work across infrastructure, cloud, and security teams to implement

Zero Trust principles , optimise Zscaler integrations, and enhance resilience of enterprise networks.

Key Responsibilities Design, deploy, and manage

Zscaler ZPA & ZIA

solutions across enterprise networks. Integrate Zscaler with

IdPs, SIEM, and endpoint security platforms . Monitor and optimise

policies, application segments, and access control rules . Troubleshoot issues across

secure access, DNS filtering, SSL inspection, VPNs, and firewalls . Collaborate with IT, cloud, and compliance teams to ensure

secure and compliant access . Maintain detailed documentation of Zscaler configurations, policies, and procedures. Support design of

On-Prem & Cloud security architecture

aligned with Zero Trust. Use Linux (scripts, key updates, cron jobs, troubleshooting) for operational support. Stay current with

emerging threats, vulnerabilities, and Zscaler updates .

Required Skills & Experience 8+ years

in

network security

roles, with a strong background in secure infrastructure design and operations. 2+ years

hands-on experience with

Zscaler ZPA and ZIA

in large-scale environments. Strong understanding of

TCP/IP, DNS, VPNs, firewalls, proxies , and routing protocols (OSPF/BGP). Experience working with

cloud platforms

(AWS, Azure, GCP) and

Zero Trust architectures . Familiarity with

IAM and SAML/SSO integrations . Proficiency with

network/security monitoring tools

(Wireshark, Splunk, etc.). Excellent

problem-solving, troubleshooting, and communication skills .

Why Join Shape the implementation of

Zscaler Zero Trust security

in a global enterprise. Work on a

mission-critical hybrid cloud transformation programme . Collaborate with

leading cloud and security professionals

in a dynamic, innovation-led team. If you have the relevant experience, please apply with your CV and we will be in touch. TPBN1_UKTJ