Enterprise Security Architect (Infrastructure & Endpoint Security)

Contract: 6 months
Rate: £850–£900 per day, Inside IR35
Location: Fully Remote

Overview

We are seeking an experienced Enterprise Security Architect to lead the design and assurance of infrastructure and endpoint security controls across a complex enterprise environment. This is a hands-on architecture role requiring deep technical credibility and the ability to translate security strategy into practical, deployable designs.

Key Responsibilities

• Design and own security architecture for infrastructure (network, cloud, on-prem) and endpoint estates
• Define and assure endpoint security controls (EDR/XDR, hardening baselines, device management)
• Produce high- and low-level security architecture designs and patterns
• Conduct security risk assessments and threat modelling for infrastructure changes
• Work with infrastructure, cloud, and operations teams to embed security by design
• Review and improve security standards, policies, and reference architectures
• Provide technical assurance for change and project delivery
• Engage with stakeholders across IT, risk, and compliance functions