# Fractional CTO in the UK, London and Hong Kong for AI-First Companies

> Cat Yung is a fractional CTO for UK, London and Hong Kong companies building on AI: architecture, build-vs-buy and delivery part-time, from an Upwork Expert-Vetted top 1% practitioner.

Source: https://www.super-cat.tech/fractional-cto  
Last modified: 2026-10-30

UK · London · Hong Kong

# Fractional CTO for AI-first companies

Written by [Cat Yung](https://www.super-cat.tech/cat-yung), Founder, Super Cat Technology. Last updated 30 October 2026.
A fractional CTO is a part-time technology executive who owns architecture, build-vs-buy decisions, engineering direction and delivery without a full-time seat. Super Cat Technology provides one in the UK, London and Hong Kong: [Cat Yung](https://www.super-cat.tech/cat-yung), Expert-Vetted on Upwork, top 1% platform-wide, with a 100% Job Success Score (source: [Upwork profile](https://www.upwork.com/freelancers/catyung), October 2026).
Book a First-Sprint Data Scientist [See a Fractional CTO Case](https://www.super-cat.tech/portfolio/fractional-cto-review)

diagnostic.shortlist scored

- 1 Invoice matching against purchase orders 8.6 top 3

- 2 Inbound call triage and booking 8.1 top 3

- 3 Contract clause search with citations 7.7 top 3

- 4 Sales-call summaries into the CRM 6.2

- 5 Demand forecast refresh 5.4

- 6 Public website chatbot 3.9

value × feasibility × data readiness

Illustration

## How do you hire a fractional CTO in the UK?

Hire a named practitioner rather than a bench. Cat Yung, founder of Super Cat Technology, works as a fractional CTO for UK companies building on AI: architecture, build-vs-buy calls, engineering direction and delivery, part-time on a retainer scoped per engagement. Cat is Expert-Vetted on Upwork, top 1% platform-wide, with a 100% Job Success Score (source: Upwork profile, October 2026).

## Is there a fractional CTO in London for AI-first companies?

Yes. Super Cat Technology is an AI agent engineering team in Hong Kong and London, so London clients get a fractional CTO in their own time zone. Cat Yung has over a decade in production AI, NLP and ML, and has shipped production AI at a 5,000-employee US enterprise and a Big 4 firm. The roadmap comes from a practitioner.

## Where can you find a fractional CTO in Hong Kong?

Super Cat Technology is based in Hong Kong as well as London, and Cat Yung acts as a fractional CTO for Hong Kong companies that need AI agents, RAG or LLM systems in production. The work covers technology strategy, architecture and team direction part-time, backed by the same Upwork Expert-Vetted top 1% badge and 100% Job Success Score.

FAQ

## What should you know before hiring a fractional CTO?

### What does a fractional CTO do?

A fractional CTO owns your technology function part-time: architecture, engineering team direction, infrastructure and delivery. For an AI-first company that includes which models and vendors to use, what to build versus buy, and how a prototype becomes a system that runs in production. You get CTO-level decisions without a full-time C-suite seat.

### Fractional CTO or fractional CAIO?

A fractional CTO owns the whole technology function. A fractional CAIO owns the AI agenda specifically: where AI creates value, model and vendor strategy, governance. If technology leadership overall is the gap, start with a CTO. If engineering is healthy but AI decisions are ad hoc, start with a CAIO. For AI-first startups one fractional executive often covers both.

Go deeper: [Fractional CTO vs CAIO vs full-time hire](https://www.super-cat.tech/guides/fractional-cto-vs-caio-vs-full-time), [fractional Chief AI Officer](https://www.super-cat.tech/fractional-caio) and [hiring an AI expert in the UK or Hong Kong](https://www.super-cat.tech/guides/hire-ai-expert-uk-hong-kong).

First-Sprint Data Scientist

## A vetted engineer embedded in your team, a shipped deliverable by end of sprint 1.

Pick a time below and you will speak with me directly. Bring the use case, the data and the constraints, and I will give you a straight view on feasibility, effort and the first thing to ship.
[Book a call](https://calendly.com/super-chain/catyung?utm_source=super-cat.tech&utm_campaign=first-sprint-data-scientist&utm_content=fractional-cto)Cat Yung
Hong Kong & London time zones

Book a call · 30 min with Cat Yung