Fractional CTO services for growth-stage SaaS

What a fractional CTO actually does

The title gets used loosely, so here’s what it means when I do it. You get one person accountable for the technical side of the business, working a fixed number of days a week, embedded in your tools and your team’s rituals.

• Owns the technical roadmap and connects it to revenue: what gets built, what gets deferred, and which debt is actually costing you.
• Makes the architecture calls that are expensive to reverse – data model, tenancy, build vs buy, which parts of the stack to retire.
• Unblocks delivery. Most stalled teams aren’t short on talent; they’re short on decisions, review capacity and a clear definition of done.
• Hires and levels up the team – job specs, interview loops, and mentoring the person who will eventually own this.
• Talks to the board and investors in plain language about risk, cost and timelines.
• Ships code. Not every week, and not on the critical path, but enough that my opinions are grounded in your actual codebase.

Who it’s a good fit for

Fractional CTO work makes the most sense in three situations:

• A seed to Series B SaaS where the founding engineer is stretched between writing code and running a team of five to fifteen.
• A non-technical founder who can’t tell whether the agency or dev team is doing good work, and needs someone on their side of the table. See technical cofounder alternatives.
• A company between CTOs – after a departure, during an acquisition, or while hiring the permanent replacement. That’s closer to interim CTO work.

It’s not a good fit if you need someone on-site five days a week, or if what you’re really after is cheap development capacity. For that, an agency or staff augmentation is a better deal.

How an engagement runs

1. Intro call (20 minutes). You describe the problem; I tell you honestly whether I’m the right person.
2. Two-week sprint. I get access to the code, the backlog and the team. By the end I’ve shipped something real and you have a written view of where the risk is and what I’d do first.
3. Ongoing days per week. If it’s working, we agree a fixed number of days and hold it. Async-first, with overlapping hours for the meetings that matter.
4. Handover. The goal is to make myself unnecessary – usually by hiring or growing the person who takes over, and leaving decisions written down.

Why a hands-on fractional CTO

Plenty of fractional CTOs are advisors: a weekly call, a strategy deck, recommendations someone else has to implement. That works for some companies. It doesn’t help much when delivery has stalled, because the bottleneck is usually in the code and the review queue, not the strategy.

I’ve spent two decades in production: a software studio I co-founded and sold after 200+ delivered projects, CTO through an acquisition, an early engineer at Yola as it scaled from 10K to 11M users, and payment and loyalty platforms serving millions of users for some of Africa’s largest retailers. I still build products – Craaft, Ecko and this site’s static site generator among them – which keeps my judgement current.

Fractional vs full-time CTO

Often you should hire full-time. A permanent CTO is the right answer once the technical strategy is clear and the role is a full week of work. The trouble is that hiring one takes three to six months, and it’s hard to write the job spec before you know what the role needs.

A fractional CTO covers that gap: you start in two weeks, fix what’s urgent, and use what you learn to hire well. I’ve written a longer comparison in fractional vs full-time CTO, and a breakdown of how fractional CTO pricing usually works.

Related

• Interim CTO for the months between CTOs
• An engineering lead for hire, embedded in your team
• Fractional CTO for startups: what you need at each stage
• Fractional CTO vs full-time CTO: how to decide
• What does a fractional CTO cost? Pricing models explained
• Technical due diligence from a CTO who has been through the deal