Security Architect Lead

Security Architect – SC Cleared | £750/day | Remote/Hybrid | Public Sector Contract

We are currently seeking a highly experienced SC-cleared Security Architect to support a critical government project. This is a fantastic opportunity to work at the cutting edge of secure architecture design within a high-impact public sector environment.

Role Summary

As a Security Architect, you will lead the design of secure systems and services, influence senior stakeholders, and contribute to the strategic development of security principles. You will be the escalation point for junior architects and will play a key role in shaping security patterns across large, complex microservice-based environments.

Key Responsibilities



Lead the technical design of secure systems and services

Develop vision, strategy, and principles for security architecture across projects

Justify and communicate design decisions to technical and non-technical audiences

Influence decision-making across large teams and departments

Produce reusable security patterns and support quality assurance

Collaborate with architects, engineers, and security stakeholders across departments

Provide insight into complex security needs and risk implications

Be the point of escalation for lower-grade security architects ️ Required Technical Skills



Demonstrated expertise in designing secure system architectures

Deep experience with AWS cloud infrastructure

Strong understanding of MongoDB and PostgreSQL within secure environments

Proven experience working with systems that encrypt and secure sensitive data

Ability to review, analyse, and improve existing security solutions

Experience with large-scale, microservice-based infrastructure

Monitor and review technical analysis across multiple problem sets Communication & Influence



Effectively communicate security concepts to technical and non-technical stakeholders

Influence policy and contribute to security requirement evolution

Translate complex risk into actionable design decisions✅ Essential Requirements



Active SC Clearance (must be current and valid)

Proven background in public sector or government department roles

Expertise in secure-by-design principles across large-scale platforms Pay Rate: £750 Per day Umbrella 

Contract Length: Initial term with likely extension

Location: Newcastle Hub (40% on-site, increasing to 60% from September). Open to other northern hubs (Leeds, Manchester, Blackpool) with occasional travel to

Interested or know someone suitable?

Apply now or contact Lewis Ashcroft at (url removed) for more details.

We also offer a £250 referral for successfully placed candidates – please share within your network