What you're actually buying.
"Fractional CTO" is vague on purpose by most people who use it. Here's exactly what working together looks like, with nothing dressed up.
How does a fractional CTO engagement work?
A fractional CTO from Fraction is a senior operator who owns the technical decisions — which hire, refactor vs rebuild, which vendor to drop — on a fixed weekly rhythm, not just an advisor handing you options. Engagements are month-to-month with no equity, scaling from ~1 day a week up to ~3–4 days. See the three retainer tiers and what a fractional CTO costs, how it compares to a full-time CTO or agency, or start small with a fixed-fee Tech Teardown. Ready? Book a 20-minute fit call.
A senior operator, not a junior with a title
Decisions, owned
A fixed weekly rhythm
An honest exit
I'm not a body shop.
I won't take orders to build whatever you point at without telling you when it's wrong — that's the entire value, and it's the part agencies skip. And if you have 12+ engineers and real scale, you need a full-time CTO, not me. I'll say so on the first call rather than take a fee I shouldn't.
How does a fractional CTO engagement actually work?
You get a senior operator on a fixed weekly rhythm — a standing working session plus async access for the calls that can't wait — who owns the technical decisions instead of just advising. It's month-to-month with no equity, scaling from ~1 day a week to ~3–4. More on what you're actually paying for.
How many days a week does a fractional CTO work?
Advisory is ~1 day a week, Embedded ~2–3, and Command ~3–4 — sized to your stage, not billed by the hour. See the tiers on the pricing page, or read how many days you actually need.
What does a fractional CTO own versus just advise on?
A real one makes the call and stands behind it — which hire, refactor vs rebuild, which vendor to drop, what to tell the board. That ownership is the whole point, and it's what separates a fractional CTO from a full-time CTO or an agency.
How is this different from an advisor or an agency?
An advisor tells you what they'd do; an agency builds whatever you point at. A fractional CTO owns the decision and will tell you when you're wrong — and when you've outgrown fractional and need a full-time CTO.
How much does it cost, and how do I start?
Retainers run $6,000–$18,000/month, or start with a fixed-fee $7,500 Tech Teardown — a two-week review creditable toward your first month. Book a 20-minute fit call and we'll size the right starting point together.