Leadership
When to Hire a Fractional CTO (and What a Great One Does in 90 Days)
By Niall · 6 min read
You don't always need a full-time CTO. Here's when a fractional one is the smarter move, and what to expect.
Plenty of companies need senior technical leadership long before they need, or can afford, a full-time CTO. A fractional CTO fills that gap: the strategic judgement of an experienced technical leader, scoped to what you actually need.
Signals you need one
- You're making big technical decisions without anyone senior to own them.
- Engineering ships unpredictably, and you're not sure why.
- You need an AI or product strategy but lack the in-house expertise.
- You're hiring engineers and have no one to vet them properly.
What a great fractional CTO owns
Not just advice, outcomes. Technical strategy and architecture, the roadmap, delivery oversight, code quality, hiring, and the hard trade-offs. The job is to make the right calls and make sure they actually happen.
The first 90 days
- First 30 days: understand the business, the team and the systems; find the biggest risks.
- Days 30-60: set technical direction, fix the most urgent problems, establish how delivery works.
- Days 60-90: a clear roadmap, a healthier engineering process, and momentum the team can sustain.
Fractional vs full-time vs advisor
An advisor is cheapest and lightest but owns nothing. A full-time CTO is the biggest commitment. A fractional CTO sits in between, real ownership and senior judgement, at a fraction of the cost, until the business is ready for more.
Relevant services
