Network Security Architect - Enterprise Transformation
Rate: Up to £850 per day | Inside IR35
Contract: 3 months initially with extension options likely
Location: Hybrid - 1-2 days per week onsite in London
Clearance: Not required
Start: Early-mid November
Overview
We are seeking an experienced Network Security Architect to support a major network transformation programme for a large international professional services organisation.
This is a strategic advisory and architecture role, focused on assessing existing network security environments, defining a vendor-neutral target architecture and supporting future sourcing and procurement decisions.
The successful candidate will combine deep technical network security expertise with strong enterprise architecture and consulting capabilities.
Key Responsibilities
- Assess existing enterprise network security environments, identifying architectural risks, dependencies and modernisation opportunities.
- Define high-level target network security architectures, principles and security guardrails.
- Evaluate Zero Trust, SASE/SSE, SD-WAN, segmentation, encryption and cloud connectivity strategies.
- Develop vendor-neutral architecture recommendations and contribute to transformation roadmaps.
- Assess managed service models, supplier dependencies and opportunities for service disaggregation.
- Translate architectural decisions into procurement-ready technical requirements and supplier evaluation criteria.
- Engage with senior stakeholders, technical teams and incumbent suppliers to validate architectural decisions.
Essential Skills & Experience
- Extensive experience as a Network Security Architect within complex enterprise environments.
- Strong knowledge of WAN/LAN, firewalls, network segmentation, remote access, cloud connectivity and enterprise network security.
- Proven experience with Zero Trust, SASE/SSE and modern network security architecture.
- Experience developing high-level target architectures, transformation strategies and technical roadmaps.
- Understanding of multi-vendor managed network services, supplier transitions and sourcing models.
- Experience translating architecture into procurement specifications, supplier requirements or evaluation criteria.
- Excellent stakeholder engagement, advisory and technical documentation skills.
- Highly desirable: Financial services or regulated-sector experience, international transformation programmes, major managed-service re-procurement and relevant architecture certifications (SABSA, TOGAF, CISSP or equivalent).
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Network Security Architect in City of London employer: Exceed Cyber limited
As a leading player in the identity security transformation space, our company offers an exceptional work environment in London, where you can thrive in a collaborative culture that values innovation and expertise. With a focus on employee growth, we provide opportunities for professional development and hands-on experience in a complex, regulated environment, ensuring that you are at the forefront of IAM practices. Join us to make a meaningful impact while enjoying competitive rates and the flexibility of a hybrid working model.
