We are seeking a Senior Design Manager to lead coordinated multi-disciplinary design delivery on secure environment infrastructure programmes (preferred: MOJ experience). You will govern design through RIBA stages, manage designer supply chain packages, lead technical coordination reviews, control design assurance / risk, and ensure compliance with MOJ Technical Standards, CDM and ISO-19650 digital information requirements. You will interface directly with senior client stakeholders, present at gateways, and drive integration across civils, structures, MEP, fire, security systems and specialist custodial equipment. Sector: Secure estates / MOJ / civil infrastructure Clearance: Active Advanced / Enhanced Security Clearance required Requirements Senior DM experience on major civils / infrastructure programmes Prior secure estate experience (MOJ / Defence / Home Office / airports etc.) Strong technical literacy and governance capability Proven leadership of multidisciplinary design supply chain Must have: Active higher-level security clearance and eligibility to work on secure sites. Assignment length: 6+ months