Fractional CTO · Founder of Rapu
A senior technology leader for founders who need one — part‑time.
I’m Duncan Gardiner. I help founders and scale-ups make sound technology decisions, build teams that ship, and turn a codebase into an asset rather than a liability.
- 15+
- Years in Technical Leadership
- 20+
- Multidisciplinary Teams Guided from Strategy to Delivery
- £M+
- Executive Advisor on Multi-Million Pound Technology Programmes
- 100+
- Complex Client Engagements Successfully Delivered
Most early teams don’t need a full-time CTO. They need someone who has done it before to steer the important decisions, ask the right questions, and stay accountable for the outcome.
How I help
Technical leadership
Act as your CTO one or two days a week — strategy, architecture and the hard calls, without a full-time hire.
Team & delivery
Set up how your engineers work: hiring, process, delivery cadence and the standards that keep quality high as you grow.
Pragmatic AI
Cut through the hype and put AI to work where it earns its place — with a clear-eyed view of cost, risk and maintenance.
Founder of Rapu
Need a delivery team, not just a leader?
Rapu is my company — digital consultancy, data governance, AI implementation and full delivery of teams for larger investigative projects.