Do you want to lead cutting-edge security architecture and compliance projects for critical infrastructure clients?Do you want to step into a high-impact, senior consultancy role with clear scop for leadership and influence?We re partnered with a specialist cyber consultancy delivering solutions across architecture, compliance, and offensive testing. They re now looking for a Principal Security Design Consultant to steer high-value client engagements across both security architecture and GRC. You ll work on complex regulatory frameworks (e.g. NIST, ISO27001, CAF, IEC 62443), lead design reviews, and guide clients through secure solution design. You ll also support junior consultants, contribute to pre-sales, and help shape internal service innovation.THE ROLE: Leading client engagements across compliance frameworks including ISO, IEC 62443 and NIST Acting as a trusted advisor across enterprise-grade architecture design and review. Designing secure solutions aligned to client-specific regulatory environments and contributing to solution proposals, designs and technical documentation. Mentoring junior and mid-level consultants and supporting the sales and marketing function with technical input. KEY SKILLS: Experience across cyber security and GRC. Strong understanding of TOGAF, SABSA, and major compliance frameworks (e.g ISO27001 and IEC 62443) Experience leading consultancy or internal projects in regulated sectors. Ability to lead projects and mentor others. Excellent com