Fractional CTO London

If you’re a startup founder in London looking for senior technical leadership without committing to a full-time CTO, you’re in the right place.

I’m Federico Toscano, a fractional CTO based in London. I work with early-stage startups and non-technical founders who need a trusted technical partner to help them build products, make smart technology decisions, and avoid the mistakes that cost months and money.

What a London-Based Fractional CTO Can Do For You

Working with a fractional CTO who is physically present in London means you get the best of both worlds: the depth of an embedded technical advisor with the flexibility of a fractional engagement.

Tech strategy and architecture – Before you build, I help you decide what to build and how. The wrong technical decisions early on become expensive problems at scale.

MVP development guidance – I define the scope, select the right technology stack, and either oversee your development team or help you find one. London has a strong startup ecosystem and I know how to navigate it.

Oversight of agencies and freelancers – Working with an external development team in or outside London? I act as your technical representative, reviewing code, managing timelines, and making sure you get what you pay for.

Investor and fundraising support – London investors ask hard technical questions. I help you prepare credible, confident answers and make sure your technical foundations hold up to due diligence.

Technical hiring – Ready to bring your first engineer in-house? I help you define the role, assess candidates, and make the right first hire for your London team.

Why London Startups Work With a Fractional CTO

London is one of Europe’s most active startup hubs, but it’s also one of the most expensive. A full-time CTO in London commands a salary of £120,000–£180,000 per year, plus benefits and equity. For an early-stage company, that’s a significant burn.

A fractional CTO gives you access to the same level of expertise at a fraction of the cost – starting from £1,000/month on a retainer. You get senior technical leadership when you need it, without the fixed overhead when you don’t.

How I Work With London Founders

My primary engagement model is a monthly retainer that keeps me in your corner as your on-call technical partner. London-based founders have the option of in-person meetings alongside async and remote collaboration – whatever works best for how you operate.

Monthly retainer: £1,000 - £2,500/month

This gives you a trusted technical voice throughout the month, architectural guidance, code and proposal review, and representation in investor or stakeholder conversations where technical credibility matters.

For specific projects – MVP builds, technical audits, architecture documents – I offer additional services on top of the retainer, priced by scope.

Who I Work With in London

• Non-technical founders who need a technical partner to turn their vision into a real product
• Startups between CTOs who need interim technical leadership while they find the right full-time hire
• Founders working with development agencies who want experienced oversight to protect their investment
• Post-MVP startups hitting growth challenges and needing a clear technical strategy to scale

Get Started

The best first step is a conversation. Book a free 30-minute call and tell me where you are and where you’re trying to get to.

No hard sell. No commitment. Just a direct conversation about whether I’m the right fit for what you’re building.