# Networking & Security Engineer

**Company:** [Capula](http://jobs.workable.com/companies/3dUsFHotAaRU7hnveUCUxv.md)
**Location:** London, United Kingdom
**Workplace:** on site
**Department:** Technology Infrastructure

[Apply for this job](http://jobs.workable.com/view/06963590-106e-4081-a3ab-32505de1e983)

## Description

We are seeking a hands-on Infrastructure & Security Engineer with strong expertise across server, network, and security domains. Security is a core priority for this role, and the successful candidate will play a key part in strengthening and evolving the firm’s security posture in response to an increasingly complex threat landscape, including emerging risks associated with AI.

This is a broad and technically engaging role, combining day-to-day operational support with project delivery and ongoing security enhancement. The role requires a proactive individual who can operate as both a technical expert and a thought partner, contributing to secure infrastructure design and continuous improvement.

This role is office-based and requires five days per week on-site presence.

**Key Responsibilities**

-   Provide advanced technical support across infrastructure, including server, network, and security-related incidents and service requests
-   Act as an escalation point for 2nd and 3rd line issues across desktop, server, and network environments
-   Has experience working with Windows and Linux (Red Hat/CentOS) environments
-   Support and maintain network infrastructure, including firewalls, switches, VPNs, and wireless systems (primarily Cisco-based)
-   Own and drive security best practices, including system hardening, patching, vulnerability remediation, and endpoint protection
-   Monitor and respond to security events, including log analysis and threat identification, with awareness of modern attack vectors (including AI-enabled threats)
-   Contribute to the design and implementation of secure infrastructure solutions across both BAU and project work
-   Collaborate closely with infrastructure and security teams to deliver enhancements and strategic initiatives
-   Create and maintain clear documentation, including SOPs, architecture diagrams, and runbooks
-   Participate in an on-call rotation to support critical systems outside business hours

## Requirements

-   Minimum 5+ years’ experience in infrastructure, networking, and security roles
-   Strong hands-on experience with Windows Server and Linux (Red Hat/CentOS)
-   Solid networking knowledge, including TCP/IP, VLANs, VPNs, DNS, DHCP, with practical experience in Cisco environments
-   Demonstrated experience implementing and supporting security controls, including:
-   Patch management and system hardening
-   Endpoint protection and monitoring
-   Identity and access management
-   Good understanding of cyber security principles, including modern threat landscapes and evolving risks (e.g. automation and AI-driven attack vectors)
-   Experience with virtualisation (VMware) and enterprise storage (SAN/NAS)
-   Scripting or automation experience (e.g. PowerShell, Bash) is advantageous
-   Experience in financial services or regulated environments is preferred
-   Strong troubleshooting skills with a structured and analytical approach
-   Able to balance BAU responsibilities with project delivery effectively
-   A thoughtful and forward-looking mindset, with the ability to identify risks and propose improvements
-   Clear and confident communicator, able to engage with both technical and non-technical stakeholders
-   Self-motivated, accountable, and willing to take ownership of issues end-to-end
-   Collaborative and adaptable, with a practical and solutions-focused approach