Job Description

Fractional vCISO (UK) — 2 Days per Week

Location: UK (Remote-first, occasional on-site as required)

Engagement: Fractional (approx. 2 days/week, with some flexibility at the outset)

About the Opportunity

Are you an experienced security leader who thrives in greenfield environments? This is an opportunity to step in as the client‑side vCISO for a rapidly scaling organisation undergoing significant technical build-out. You’ll provide independent, senior‑level security leadership while working alongside a major delivery partner, ensuring decisions are robust, risk-based, and aligned to long‑term business goals.

This isn’t a BAU firefighting role; it’s a chance to shape the foundations of a brand‑new security function and influence how secure‑by‑design principles are embedded from day one.

What You’ll Be Doing

As the fractional vCISO, you will:

• Act as the independent security authority on the customer side
• Validate, challenge, and approve security architecture, design choices, and tooling proposals
• Establish core security foundations, including:

Identity strategy

Vulnerability management approach

Baseline controls

Governance, reporting, and risk register

• Provide clear, pragmatic decision‑making in a fast-moving, startup‑style environment
• Offer guidance on future compliance pathways (e.g., ISO 27001)
• Help shape the organisation’s early security culture, ways of working, and strategic posture

What We’re Looking For

You’ll excel in this role if you have:

• A proven background as a CISO
• Experience operating in greenfield or startup/scale-up environments
• A strong track record of making risk-based decisions and owning outcomes
• The ability to simplify complexity and communicate clearly with technical and non-technical stakeholders
• UK residency (remote-first with occasional travel when needed)
• SC eligibility

Why This Role Stands Out

• Greenfield influence: Build the security function from the ground up
• Independent leadership: You are the client’s voice, not the supplier’s
• High-impact scope: Your decisions directly shape architecture and operational security
• Sustainable cadence: A fractional setup that offers balance without compromising influence

We're looking to move quickly on this - send in your application or DM with an overview of your relevant experience in more detail.