What is a fractional CTO?
A fractional CTO is a senior technology leader who works part-time for several companies, owning technology decisions, vendor choices and delivery oversight without the cost of a full-time executive salary.
The role covers the same ground as a full-time chief technology officer, just in fewer hours. A fractional CTO sets technology direction, decides which systems to build or buy, reviews vendor contracts, and holds developers or agencies to a written scope. In a software company the job leans toward product engineering. In a service business it usually leans toward choosing, connecting and getting staff to adopt the tools the firm already pays for.
Most arrangements are a monthly retainer with a set number of hours or meetings, often starting with a fixed term such as 90 days. Some fractional CTOs only advise. Others also lead a defined piece of delivery, such as an integration or an automation pilot. Before signing, ask who is accountable for results, how progress will be measured, and what happens to documentation and admin access if the arrangement ends.
A fractional CTO makes sense when technology decisions keep stalling, when an outside agency needs a technical owner on your side, or when software spending has grown without a plan. It makes less sense if you only need help-desk support, which is a managed IT service. InTheory offers this kind of role as a fractional AI and technology lead, with plans from $2,500 a month, but the definition applies to any provider.
Example
For example, a 40-person engineering consultancy has three separate project tools, a half-finished client portal from an agency, and no one inside who can judge the agency's estimates. A fractional CTO spends two days a month reviewing the portal plan, cuts the scope to what clients actually use, and sets acceptance criteria the agency must meet before the next invoice is approved.
Where it shows up in practice
See how InTheory provides this: fractional CTO · fractional CIO · pricing.