The Fractional CTO
Hiring Checklist

Hiring a fractional CTO is a high-trust decision you make with low information. You're betting real money and real months on one person's judgment, usually before you have the technical depth to grade them yourself. So you screen for judgment instead, the same way you'd screen any senior leader.

Work through the five sections below before you sign with anyone. If a candidate can't give you straight answers to these, you have your answer.

1. First, are you actually ready?

Bringing in senior technical leadership before you need it wastes money; bringing it in too late costs you a rebuild. You're likely ready if:

• You're making technical decisions you can't confidently evaluate — architecture, build-vs-buy, an AI initiative, a stalled roadmap.
• You're about to make your first engineering hires and don't know how to interview them.
• Something you shipped is starting to buckle under real usage and you can't tell whether it's a small fix or a deep problem.
• You're spending real money on development and have no one senior accountable for whether it's any good.

You can probably wait if you have a clear roadmap, a trusted technical lead already, and no high-stakes decision in front of you. Two reads on the timing: Do You Actually Need a CTO Yet? and 5 Signs It's Time to Bring in a Fractional CTO.

2. What the role should actually cover

A fractional CTO is not a part-time pair of hands. Make sure the engagement includes the decisions that actually move your business:

• Architecture and technology choices — owning the calls you can't unwind cheaply later.
• The roadmap — deciding what to build, in what order, and what to cut.
• Hiring — interviewing, leveling, and structuring your first technical hires.
• Shipping discipline — turning intent into software that's actually in front of customers.
• A straight line on risk — someone who'll tell you what's fragile before it breaks.

If the conversation is only ever about writing code, you're hiring a contractor, not a CTO. The difference is whether they own outcomes or just tickets.

3. Questions to ask on the first call

You don't need to understand the tech to run a good screen. You need to listen to how they answer:

• "How will you know your work is working?" Listen for a number or a vibe. Good leaders define success in terms you can check yourself.
• "What happens when something you build is wrong?" Everyone ships bugs. You want someone who designs for failure, not someone surprised by it.
• "Show me something you built that broke, and what you changed after." Real operators have a scar and a story. Talkers reach for a hypothetical.
• "What would you tell me not to build?" The best technical leaders are comfortable saying no. That's the judgment you're paying for.
• "How do you work with a team that isn't yours?" You want someone who slots into how you already work, not someone who needs a reorg to function.

4. Red flags

• Talks only in capability and buzzwords, never in tradeoffs or failure modes.
• Can't or won't define what success looks like up front.
• Promises a full rebuild before understanding your business.
• Quotes a price before asking about your data, your team, or your goals.
• Sells you the building (the easy 70%) and goes quiet on the judgment (the 30% that decides whether it's any good). That 70/30 split is the whole model I work by.

5. Cost, engagement models, and knowing it's working

Fractional engagements usually come in a few shapes — ongoing advisory, embedded build partner, or a fixed-scope project — and they cost a fraction of a full-time CTO's $250K+ package. Two pieces worth reading before you talk numbers: What Does a Fractional CTO Cost? and Fractional CTO vs. Agency vs. Dev Shop.

Before you sign, agree on how you'll both know it's working: a clear first 30-day outcome, a standing check-in, and a decision you'll make together about whether to continue. A good fractional CTO wants that bar set as much as you do.

Run this checklist on every candidate, including me. If the answers don't hold up, keep looking.