Network Engineer - Zscaler
London
Competitive + bonus + benefits
We’re seeking a highly motivated Network Engineer to join a financial services organisation operating in a secure, high-availability, enterprise environment. This role is ideal for a networking professional with a strong foundation in core infrastructure and hands-on, production experience with Zscaler as a key component of a Zero Trust / SASE strategy.
You’ll play a critical role in maintaining and enhancing a modern network architecture that supports a fast-paced, globally distributed business.
Key Responsibilities:
* Support, configure, and maintain enterprise network infrastructure, including routers, switches, firewalls, VPNs, and cloud-based network services
* Administer and support Zscaler as a core security platform, ensuring secure access and alignment with Zero Trust principles
* Monitor network performance and availability; diagnose and resolve issues to ensure optimal uptime
* Assist with the design and implementation of secure, scalable network solutions
* Collaborate with infrastructure, security, and business teams to resolve incidents and support initiatives
* Maintain accurate documentation for network configurations, processes, and incident resolutions
* Participate in an on-call rotation and respond to network incidents as required
Key Requirements:
* Proven experience as a Network Engineer within financial services or a similarly regulated, security-focused environment
* Strong hands-on experience with Zscaler, supporting Zero Trust and SASE architectures
* Solid understanding of networking fundamentals: TCP/IP, subnetting, routing, switching, DNS, DHCP, VLANs, and network security principles
* Experience with Cisco and Meraki technologies, or similar
* Hands-on experience with Palo Alto firewalls, or similar
* Strong troubleshooting skills with the ability to quickly isolate and resolve network issues
* Familiarity with network monitoring tools and ticketing systems
* Clear written and verbal communication skills, able to explain technical concepts to both technical and non-technical audiences
Why Join
This is an opportunity to work in a high-performance financial services environment where network security, reliability, and modern Zero Trust architecture are mission-critical. You’ll have meaningful ownership, exposure to enterprise-scale systems, and the chance to work with leading-edge security technologies.