Part-Time CTO Jobs · Hire a part-time CTO, or hire CTO

Part-time CTO Role Definition

Part-time Chief Technology Officers provide senior technology leadership without full-time commitment, working an agreed number of days a week. Startups and growing companies hire a part-time CTO to handle strategic technology decisions, technical architecture, team leadership, and scaling the technology organization.

The role has become increasingly popular as technology complexity has outpaced internal capability at many scale-ups. Companies need senior technology expertise for cloud migration, architecture decisions, team scaling, and technical due diligence but often can't justify a full-time CTO on a £160,500 median salary (Robert Half) — so they hire the expertise part-time instead.

Part-time vs Fractional CTO — key differences

Part-time CTO roles typically involve consistent days (e.g., Mon-Wed) with one company over a longer engagement, often with potential to transition full-time. Fractional CTO jobs often work across multiple clients with more flexible, project-based arrangements. Both provide senior technology leadership without full-time overhead. If you need a CTO five days a week but for a fixed term — cover, a turnaround, a defined programme — that is an interim CTO.

How to hire a part-time CTO

To hire a part-time CTO, fix the days per week and the first technical mandate — architecture review, team scaling or a migration — then brief us against it: we come back with a shortlist of 3–5, each with day rate, availability and IR35 position set out.

Part-time CTO services — what the engagement covers

Part-time CTO services usually cover four areas: technology strategy and the architecture that follows from it; the engineering team — hiring, structure and how work is delivered; security and resilience; and the technical side of fundraising and due diligence. Agree which you are buying, because a part-time CTO on limited days cannot lead all four at once.

Security is the one boards most often leave unowned. The NCSC's Cyber Security Toolkit for Boards helps boards embed cyber resilience across people, systems and processes, and Cyber Essentials is the minimum standard of cyber security the government recommends for organisations of all sizes — and a growing number of organisations require suppliers to be certified to bid for work. A part-time CTO should be able to tell you where you stand against both.

Part-time CTO services are also sold by agencies and consultancies as a team rather than a person. That can work for a defined project; for an ongoing seat, insist on one named CTO who attends leadership meetings. For the multi-client model, see fractional CTO jobs; for costs, fractional CTO cost.