Strategic Security Architect: Network & Identity (Contract)

LT Harper Group; Greater London; Hybrid; GBP 101,000 - 111,000; Full time

Job summary

LT Harper Group seeks a Security Solution Architect to define and deliver the future-state network and identity architecture across multiple sites in the Greater South-East London area. The contract role runs initially for 3 months with hybrid working – one day on-site per week – and a clear design authority to own architecture documentation and risk decisions.

The candidate will shape segmentation across stores, data centres and cloud, implementing Zero Trust principles while coordinating with

Qualifications

• Security architecture and solution design experience covering both network and identity.
• Hands-on design work with hybrid Active Directory and Entra ID, including Conditional Access and privileged access.
• Fortinet architecture and network segmentation design.
• Experience turning audit findings into remediation plans.
• Confident engaging stakeholders across internal teams, MSPs and suppliers.

Responsibilities

• Define the future-state network architecture across a multi-site WAN, Azure networking and core services such as DNS and DHCP.
• Set the identity and access control strategy for a hybrid Active Directory and Microsoft Entra ID estate, including MFA, Conditional Access, Privileged Access Management and role-based access control.
• Design segmentation approaches for stores, data centres and cloud, built on Zero Trust principles.
• Turn audit findings into practical technical remediation plans.
• Act as design authority, owning architecture documentation and technical risk decisions.
• Gather security requirements from internal teams, managed service providers and third parties, and bring them into the design.

Skills

Security architecture

Hybrid AD & Entra ID

Fortinet design

Audit remediation

Stakeholder engagement

Job description

LT Harper Group seeks a Security Solution Architect to define and deliver the future-state network and identity architecture across multiple sites in the Greater South-East London area. The contract role runs initially for 3 months with hybrid working – one day on-site per week – and a clear design authority to own architecture documentation and risk decisions.

The candidate will shape segmentation across stores, data centres and cloud, implementing Zero Trust principles while coordinating with