Fractional & Interim CTO Services

Technology Leadership That Starts With Your Business

I sit with founders and leadership teams to understand how the business actually works, then make sure the technology decisions support where it's going. Not just what to build, but why it matters commercially.

25+ years scaling technology teamsSeed to Series A sweet spotUK-based, remote-first

Trusted by teams atSee the work →

£120–180k
Full-time UK CTO salary (plus oncosts)
£3–7k /mo
Fractional CTO retainer, 1–3 days a week
25+ years
Scaling technology teams from Seed to Series A+

Same board-level judgement. A fraction of the cost.See the full UK 2026 pricing guide →

Four Ways to Work Together, One Way to Start

Pick the route that fits where you are. Every one begins with a real conversation, not a form and a follow-up sequence.

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Fractional CTO cost calculator · Do-you-need-a-CTO scorecard · AI readiness score · Prompt library

The Partner CTO Method

Four phases that turn business understanding into technical outcomes. A relationship founders treat as a partnership, not a vendor engagement.

  1. Listen

    Understand how the business actually works

    The first 30 days are a business audit as much as a tech audit. Conversations with founders, sales, product, finance. The picture that comes out of that is usually one nobody has written down.

    • Written business + tech audit
    • Risk map, prioritised
    • 90-day roadmap
  2. Translate

    Move information cleanly in both directions

    Founders and boards need technical decisions in commercial language. Engineers need commercial context in language they can act on. That translation is where a lot of fractional engagements quietly break down.

    • Board-ready technical narrative
    • Framed trade-off calls
    • Aligned leadership + engineering
  3. Build

    Anchored in business context, not technical purity

    Now the technical work begins, but it starts from a real picture of where the business is going. Platform, hiring, delivery pipeline, security posture. What actually needs to be built, in what order, at what depth.

    • Architecture + platform plan
    • Engineering hiring plan
    • Delivery pipeline installed
  4. Compound

    Set up the team to keep getting better after I leave

    The point of every engagement is that you can run the system without me. Documentation, handover, delivery culture the team can sustain. If you decide you want ongoing care, the retainer continues. Your call, not a lock-in.

    • Handover documentation
    • Sustained delivery culture
    • Optional ongoing retainer

What People Say

Nick led with empathy, logic, and quiet confidence. He gave the engineering team room to think and took the time to understand the nuances of our work before suggesting changes. He tackled difficult conversations head-on with clarity and kindness, and brought out the best in people. Having Nick as a CTO is genuinely transformative for a team.

Meg PorterVP of Product, Turn Studio
Nick Tong holding a coffee, warm morning window light

A Partner at the Table, Not Just a Technical Hire

What my clients tell me sets me apart isn't the technology, it's that I take the time to understand their business first. How it operates, what's driving the numbers, where the real pressure points are, what the team is genuinely trying to achieve.

Twenty-five years across funded startups, scale-ups, and established businesses, with a particular focus on technology for good. Co-founder and CTO at Unmind (Series B). VP Technology at Vault Platform (acquired by Diligent in 2025).

Common Questions

What is a Fractional CTO?

A Fractional CTO is an experienced technology leader who works with your company on a part-time basis, typically one to three days per week. You get senior CTO-level thinking, strategy, and execution without the cost of a full-time hire. Ideal for funded startups and scale-ups at Seed to Series A who need real technical leadership but aren't ready for a permanent C-suite hire.

See the four engagement types →

How much does a Fractional CTO cost in the UK?

A Fractional CTO in the UK typically costs between £3,000 and £7,000 per month on a retainer, depending on days committed and the complexity of the engagement. Day rates range from £1,000 to £1,600. That compares favourably to a full-time CTO salary of £120,000 to £180,000 plus oncosts.

See the full UK 2026 pricing guide →

What is the difference between a Fractional CTO and an Interim CTO?

A Fractional CTO works part-time across your leadership team on an ongoing basis, typically one to three days per week. An Interim CTO is a temporary full-time appointment, usually to cover a gap (departure, illness, or extended leave) or to lead a specific transformation. Both provide senior technology leadership without a permanent hire.

Read the full comparison →