Vetted senior security leaders, available 1 to 3 days per week. Most engagements run 3 to 12 months.
THE ROLE
A fractional Chief Information Security Officer takes on the strategic responsibilities of a full-time CISO, but works with your company part-time. The typical engagement is 1 to 3 days per week over a defined period, usually 3 to 12 months.
The core scope covers the security strategy and roadmap, risk and compliance, the controls and policies the business runs on, vendor and audit management, and the certifications and regulatory footing that increasingly gate European deals. A fractional CISO is accountable for outcomes, not just a risk register. They own the security programme, sit in executive and board discussions, and align security with the commercial plan the same way a permanent hire would.
The distinction from a security consultant matters. A fractional CISO carries the function and the decisions: which risks the company accepts, how controls are run, how an audit or certification is passed, how an incident is handled. A consultant delivers a fixed-scope assessment or report but does not own the outcome or sit on your leadership team.
Most fractional CISOs work with 2 to 3 companies in parallel, which means they bring pattern recognition from across the market. They have usually led security through scaling and certification phases at growth-stage or enterprise companies, and can point to programmes they took from ad-hoc to audited rather than to a report that never changed how the company operates.
A fractional CISO does not run day-to-day security operations. The role is leadership: they set the standard, lead the people and partners who implement it, and make sure security investment connects to a measurable reduction in risk instead of scattering across tools that never close a gap.
THE DECISION
Two clear profiles and a pragmatic middle path if you are between them.
Hire Fractional When
Hire Fulltime When
Pragmatic Middle-Path
If you are between these two profiles, past your first compliance push but not yet at a standalone security organisation, or uncertain whether the role justifies a permanent seat, fractional is the lower-risk entry point. A good fractional CISO will build the function, establish what good looks like for risk and controls, and help you define the full-time job description from the inside. When the time comes to hire permanently, they can run the process and hand over cleanly.
LIVE
Day rates for vetted fractional CISOs in Europe typically range from EUR 1,100 to 1,950 per day, depending on seniority, sector, and engagement length. A typical 1-to-2-days-per-week engagement therefore costs roughly EUR 5,000 to 16,000 per month. Longer engagements (6+ months) often come with a discounted rate.
Most engagements run between 3 and 12 months, often beginning with a short security review and a 90-day plan before settling into an ongoing arrangement. Shorter engagements (under 3 months) are usually framed as advisory. Longer engagements often transition into a hybrid role or hand over to a full-time hire that the fractional CISO helps recruit and onboard.
Yes, that is the standard model. Most fractional CISOs work with 2 to 3 companies in parallel and explicitly avoid direct competitors. Fractionista requires executives to disclose all active engagements to their clients as a condition of listing on the platform.
A fractional CISO owns security as a strategic capability part-time on an ongoing basis (typically 1 to 3 days per week, 3 to 12 months): strategy, risk, compliance, the security programme. An interim CISO fills a vacant seat full-time for a fixed period, usually during a transition. A security consultant delivers a fixed-scope assessment or report but does not own outcomes, sit on your leadership team, or carry the programme over time.
Fractional executives on Fractionista typically specialise in one or two domains, with common examples including B2B SaaS, FinTech, HealthTech, deep tech, and regulated industries. When evaluating candidates, look for domain overlap with your business model and a track record of outcomes, not just tenure. Profiles show domain tags and availability so you can assess fit before reaching out.
Yes. Fractionista also covers CFO, CMO, CTO, COO, CPO, CHRO, and CAIO, as well as Board Advisory across Europe.
Post a CISO brief and match vetted candidates in our online portal. No retainer, no upfront fee.