George St Growth · AI-native growth partner

Your AI-native partner in building a defensible growth engine.

Your AI-native partner in building a defensible growth engine.

Your AI-native partner in building a defensible growth engine.

Work with someone who’s been there. I’ve spent my career growing Seed to Series B companies, and today I do it with a custom stack of AI agents I built myself.

Let’s Talk Growth
Read My Story

I’ve worked with some great companies

  • Chexy logo
  • Pine logo
  • American Operator logo

I’ve worked with some great companies

  • Chexy logo
  • Pine logo
  • American Operator logo

I’ve worked with some great companies

  • Chexy logo
  • Pine logo
  • American Operator logo

(01)

Results

Results speak for themselves.

Results speak for themselves.

Results speak for themselves.

Lower CAC

Fintech company

More conversions at a 24% lower cost

Payments company

Lower CAC while spend rose 51%

Healthcare company

Lift in landing page conversion

Real estate fintech

A cafe owner behind the counter
Helcim logo

Google Ads

Meta

More conversions at a 24% lower cost

A patient at a Wally dental appointment
Wally Health logo

Search

TikTok

Meta

Lower CAC while spend rose 51%

A business owner working on a laptop
Loop logo

Channel Mix

Paid Acquisition

Lower CAC with higher ARPU

A hand holding a house key
Baselane logo

Landing Pages

Lifecycle

Lift in landing page conversion

A small business owner at work
American Operator logo

Paid Search

Lower CPL in the first 60 days

AI native.

AI native.

AI native.

Custom AI agents handle the daily work across paid, creative, outbound and reporting, so my time goes to the strategy that moves your numbers.

growth_agents.live

4 RUNNING

Paid Media Agent

Optimizing

Flagged what to scale, cut and test next

Creative Agent

Analyzing

Reviewed which hooks and formats are winning

Outbound Agent

Writing

Built a verified list and drafted the next sequence

Reporting Agent

Syncing

Pulled yesterday’s numbers across every channel

Integrates with

Claude logo

Claude

Codex logo

Codex

(02)

About

The person behind it.

The person behind it.

The person behind it.

I’ve spent my career at venture backed, high growth startups, either working on growth teams or leading them. In 2022 I started George St Growth to work with founders directly.

Today I work as a fractional Head of Growth, media buyer and advisor from Toronto, with a custom stack of AI agents doing the routine work alongside me.

Read My Story
Simon Mills smiling at a table with a coffee

(03)

Work with me

Four ways I put growth to work.

Four ways I put growth to work.

Four ways I put growth to work.

01

Fractional Head of Growth

Fractional Head of Growth

Fractional Head of Growth

Part of your team one or two days a week.

From $6,500

From $6,500

02

Digital Media Buying

Digital Media Buying

Digital Media Buying

Paid social, paid search and affiliate, with AI-powered static and animated creatives.

Fixed scope

Fixed scope

03

Offline Channels

Offline Channels

Offline Channels

Out-of-home, TV, radio and direct mail for digital brands.

Fixed scope

Fixed scope

04

AI Agents

AI Agents

AI Agents

Custom agents for ad buying, creative, outbound and reporting.

Part of how I work

Part of how I work

(04)

Examples

My work in action.

My work in action.

My work in action.

Clio out-of-home advertising in New York

Clio

New York

Legal Technology

Float out-of-home advertising in Toronto

Float

Toronto

Financial Technology

Felix out-of-home advertising in Toronto

Felix

Toronto

Online Pharmacy

Peggy out-of-home advertising in London

Peggy

London

Art Marketplace

PolicyMe out-of-home advertising in Toronto

PolicyMe

Toronto

Insurance

Out-of-home across North America and the UK.

See More

(05)

Kind words

What clients say.

What clients say.

What clients say.

  • "Would recommend Simon to any founder contemplating their growth strategy."

    Andrew Kim

    SHARE CEO + Co-Founder

  • "Simon has been instrumental in building the media plan for our brand. We've seen such positive returns from him."

    Armita Gurney

    Head of Marketing at Float

  • "Simon Mills is essential to driving growth at Simple Ventures, supporting both existing ventures and new concepts."

    Rob Palumbo

    Partner and COO of Simple Ventures

  • “I worked with Simon to run an experiment to scale direct sales in Chicago. He was gritty, resourceful and navigated ambiguity with ease."

    Alice Lan

    Chief of Staff at Opencare

  • "Simon was great on our paid acquisition at Mainshares, with deep channel knowledge and full-funnel insight."

    Oleena Mak

    Growth Marketer at Mainshares

  • “Simon is full of great ideas -- but more than that -- able to pull off the ideas on a quick timeframe and tight budget. Huge impact to NorthOne's growth.”

    Graham Isador

    NorthOne

  • "I would recommend Simon to any growing business that is looking for a data driven growth leader."

    Sebastian Nordstrom

    Director of Revenue Operations at Loop Financial

  • Simon was able to turn Google Ads from an experimental channel to a channel that delivered 50% of total conversion volume at competitive efficiency.

    Nicole Silver

    Head of Marketing at SingleKey

FAQ

Frequently Asked Questions

Frequently Asked Questions

What is a Fractional Head of Growth?

How does a typical Fractional Head of Growth engagement work?

How much does a typical engagement cost?

What type of companies are a good fit?

Let’s talk.

Let’s talk.

Let’s talk.

Tell me what you’re trying to grow. The easiest way to reach me is by email: simon[at]georgestgrowth[dot]com

Email Me
Connect on LinkedIn