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Fractional CTO · London

AseniorCTOforyourLondonstartup,withoutthefull-timehire

I run architecture, hiring, and sprint planning for London founders who need technical leadership now and can't wait six months for a full-time exec.

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RegionLondon$5,499/mo
  1. Audit
  2. Architect
  3. Scale

monthly retainer

Who this is for

London founder (seed to Series A) who needs senior technical leadership before a full-time CTO hire makes sense. London CTO hires run £180k+ with a six-month search; offshore contractors give you no accountability.

The pain today

  • London CTO hires run £180k+ with a six-month search; offshore contractors give you no accountability.
  • Investors keep asking who owns architecture and security at your London company
  • Your technical founder is reviewing every PR alone and context-switching constantly
  • Hiring a full-time CTO will take six months and you need direction now

The outcome you get

  • Fractional CTO on standup and Slack, working the hours the engagement needs
  • Architecture, hiring plan, and security posture documented in the first 30 days
  • Monthly roadmap and sprint cadence your board can read
  • Clean handoff plan for when a full-time hire lands

Why fractional works for London startups

London CTO hires run £180k+ with a six-month search; offshore contractors give you no accountability. A fractional engagement at $5,499/mo (CTO Advisory) gives you the same architecture judgment, hiring help, and board-level communication without the full-time cost and without the long search. I have worked inside funded teams at bolttech (a $1B+ unicorn) and at GigEasy (Barclays and Bain Capital backed, MVP shipped in 3 weeks), so I know what investors expect on a technical diligence call and what your senior engineers need from a CTO peer. When the time is right for a permanent hire, I help you interview for it.

Fractional CTO on standup and Slack, working the hours the engagement needs

How I work with London customers

Working hours overlap 1pm–6pm GMT daily. Quarterly in-person visits available. Daily standup, weekly architecture review, monthly board prep. Serving London remotely. Standard international B2B contract, simple for UK cap tables. USD-billed (removes FX risk for US-investor-backed UK startups). Most of the work is async on Slack with two or three live calls per week for hiring, architecture, and investor updates. Quarterly in-person visits are folded into the retainer for local metros; more frequent travel is available at cost. You own all documentation, runbooks, and architecture specs as work made for hire on payment.

3 weeks: From kickoff to investor demo.
GigEasy

What 20 hours a week actually covers

In a typical week I run architecture review, pair with your senior engineer on the hardest tickets, help you hire or fire, own vendor decisions across cloud, observability, and data, write or review specs for new features, and sit in on investor updates. I do not write every line of code. I keep your team moving and your board calm. If you need more hands I ramp to the full Fractional tier at $9,499/mo. If you need less, CTO Advisory at $5,499/mo covers strategic review and hiring without daily ops. Every tier is month-to-month with a 14-day money-back guarantee and zero equity.

Recent proof

A comparable engagement, delivered and documented.

0 weeksFrom kickoff to investor demo
Startup MVP Development

Built and shipped an investor-ready MVP from scratch

Built the entire technological base and delivered MVP in just 3 weeks, enabling a successful rapid launch and investor demo.

Read the case study

Keep reading

Fractional CTO: full service details and pricingFractional CTO vs Full-Time CTO: The Real Cost ComparisonWhat Does a Fractional CTO Do? A Founder's GuideWhen Does Your Startup Need a Fractional CTO?

Frequently asked questions

The questions prospects ask before they book.

Working hours overlap 1pm–6pm GMT daily. Quarterly in-person visits available.

Yes. Quarterly travel is folded into the retainer for most metros; additional visits bill travel at cost.

Serving London remotely. Standard international B2B contract, simple for UK cap tables. USD-billed (removes FX risk for US-investor-backed UK startups).

English-native communication.

No. Monthly cash retainer only. It keeps incentives clean and means you can cancel any time without cap-table paperwork. Month-to-month with a 14-day money-back guarantee.

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