Portfolio Security Lead Location: Bristol (Hybrid – 2–3 days per week onsite) Clearance: Minimum SC required (DV preferred) Employment type: Open to Contract (excellent Outside IR35 rates) or perm, with competitive package on offer The Role Frontier Resourcing is looking for a Portfolio Security Lead to join a leading Security Practice in Bristol, to provide strategic security leadership across a complex portfolio of Defence and Government programmes. This is a senior role suited to a security leader with CISO-level knowledge, skills, and experience, capable of setting security direction, assuring delivery, and engaging credibly with senior stakeholders across government, engineering, and programme delivery functions. You will define security outcomes, establish robust assurance frameworks, and ensure the delivery of secure, resilient, and accredited systems across the portfolio. The role can be fulfilled on a contract or permanent basis. Key Responsibilities Provide portfolio-level security leadership, ensuring secure-by-design principles are embedded throughout delivery Work with senior stakeholders to define security outcomes, risk appetite, and governance Establish and own the security risk management and assurance framework, aligned to legislation, regulation, policy, standards, and best practice Define required security capabilities, including people, tools, infrastructure, and processes Lead and oversee implementation to ensure consistency and coherence across the portfolio Provide technical assurance of cyber security analysis, designs, and assurance evidence Manage the portfolio security risk register and conduct security maturity assessments Act as the primary security interface with SROs, SLT, and portfolio engineering and delivery teams Own and deliver cyber security risk management, assurance, and maturity reporting Define and communicate Security Strategy, Architecture, and Governance Develop and own the Portfolio Security Risk Management and Assurance Plan, identifying internal and external dependencies About You You will bring: Extensive experience as a senior security leader with CISO-level capability A strong background delivering secure, resilient, and accredited systems across Defence and Government programmes Deep understanding of secure-by-design leadership, assurance, and governance Proven experience influencing and advising senior stakeholders Strong technical credibility combined with strategic thinking and pragmatic delivery The ability to operate confidently across security, engineering, and programme environments Why Join Us You’ll be part of a respected security practice, working on nationally significant programmes, with the opportunity to shape portfolio-level security outcomes and influence security strategy at scale.