What a Fractional CTO Actually Does (and When You Need One)

The title 'fractional CTO' gets thrown around a lot these days. Some people hear it and think 'part-time developer who also does architecture.' Others assume it means 'expensive consultant who draws diagrams.' Neither is accurate.

A fractional CTO provides the same strategic technical leadership as a full-time CTO, but for companies that do not need (or cannot yet afford) that role full-time. The 'fractional' part refers to time allocation, not capability.

What the role actually looks like

In a typical engagement, I spend 2 to 4 days per month with a company. That time covers: technical strategy and roadmap planning, architecture reviews and decisions, team structure and hiring guidance, vendor and tool evaluation, and direct problem-solving on critical technical challenges.

The key difference between a fractional CTO and a technical consultant is continuity. A consultant comes in, delivers a report, and leaves. A fractional CTO is embedded in your team. I know your codebase, your team's strengths, your business constraints. I am there for the long run.

When you need one

You have a technical team but no technical leader

This is the most common scenario. You have developers building your product, but nobody is making the high-level technical decisions: which technologies to adopt, how to structure the team, when to refactor versus rebuild, how to handle scaling.

You are about to make a big technical bet

Choosing your tech stack, selecting a cloud provider, deciding between build and buy, planning a migration. These decisions have years of consequences. Having an experienced technical leader involved at the decision point saves enormous cost downstream.

You are preparing to raise funding or sell

Investors and acquirers do technical due diligence. A fractional CTO can help you prepare: cleaning up technical debt, documenting architecture, improving development practices, and presenting your technical story clearly.

What it costs versus a full-time CTO

A full-time CTO in Stockholm costs 80,000 to 120,000 SEK per month in salary alone, plus benefits, equity, and management overhead. A fractional CTO typically costs 30,000 to 50,000 SEK per month for 2 to 4 days of engagement.

The economics work because most growing companies do not need a CTO in meetings five days a week. They need someone who can make the right decisions at the right moments and guide the team between those moments.

How to work with a fractional CTO effectively

The companies that get the most value from this arrangement do three things: they give the fractional CTO direct access to the development team (not just management), they involve them in key decisions before they are made (not after), and they treat them as part of the leadership team.

If you are curious whether this model would work for your company, I am happy to have a conversation about it. No pitch, just an honest assessment of whether the fit makes sense.