AI products & platforms, from blank page to production revenue.
I’m Duncan Thompson — co-founder & CPTO of Tiller with a decade leading product and engineering in B2B SaaS. I help startups set up their architecture, ship production AI, and wire up the integrations their go-to-market runs on.
Duncan Thompson
Co-Founder & CPTO, Tiller
Years leading product & engineering
ARR on running products
Stat 3
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Four ways I help startups move faster
Hands-on, senior help in the areas where getting it wrong is most expensive — architecture, integrations and production AI.
Startup architecture & cloud
The right foundation, before it becomes expensive to change.
Set up scalable, secure cloud architecture that fits your stage — so you ship fast now without boxing yourself in later.
Explore this serviceCRM & tooling integrations
Make your go-to-market stack actually talk to each other.
Reliable, well-modelled integrations across your CRM and marketing tools so data flows cleanly instead of breaking silently.
Explore this serviceCalendar integrations
Google & Microsoft calendar, done to enterprise-security standard.
Deep Google and Microsoft Calendar integrations built to pass the security reviews that gate high-trust customers.
Explore this serviceApplied AI & Fractional CPTO
Production AI that is reliable — and the leadership to ship it.
Ship real LLM, RAG and agent features with the evaluation and guardrails that make them trustworthy — plus fractional product & tech leadership.
Explore this service
Boardroom judgement, hands still on the keyboard
I’ve spent over a decade taking B2B SaaS products from zero to one and into scale — across health-tech, insurance and HR-tech, including regulated, high-trust environments. As co-founder and CPTO of Tiller, I built a live AI meeting-intelligence platform from a blank page to £200k+ ARR.
I pair genuine technical depth — AWS, GCP, Python, production LLMs — with the commercial judgement of an MBA and real P&L ownership. That means I can design the architecture, write the code, and still hold my own in the boardroom.
A simple way in, and a clean way out
Engagements are shaped around outcomes, not hours. Here’s the shape most of them take.
Understand
A focused deep-dive into your product, stack and goals. I map where you are, where you want to be, and the shortest defensible path between the two.
Build
Hands-on delivery — architecture, integrations, production AI. I write code and make decisions, not just decks. Your team ships alongside me and keeps the knowledge.
Hand over
Documentation, guardrails and a team that can run without me. The goal is to make myself unnecessary — leaving you with something reliable you fully own.
Firsts of their kind, shipped to production
A selection of what I’ve built and delivered — the kind of outcomes I’d bring to your team.
- 0→£200k+ ARR built from a blank page at Tiller, with 100,000+ meetings analysed
- Production AI on AWS Bedrock & Google Vertex AI — LLMs, RAG, agents, MCP servers
- Google & Microsoft Calendar integrations that passed both vendors’ security reviews
- ISO 27001 achieved in 6 weeks, GDPR implemented and SOC 2 readiness driven
- Vitality booking system still handling ~80% of their patient bookings today
- Led product & engineering teams of up to 20 across health-tech, insurance and HR-tech
Let’s figure out your next move.
Tell me what you’re building and where it’s getting stuck. I’ll come back with a straight answer on whether — and how — I can help.
Pick a time straight from my calendar — no back-and-forth.