Hey, I'm Mark Walker

3x CRO turned AI GTM builder

I've spent the last 15 years in the trenches of B2B go-to-market — building teams, hitting targets, and figuring out what actually works when you're trying to grow a company.

I've been Head of Growth at Eventbrite, the first Marketing Director at Attest (where I later became CRO), and CRO at Pion (Student Beans). Along the way, I've built and led teams across sales, marketing, and customer success — always with one foot in strategy and one in execution.

Now I'm building AI GTM Studio because I've seen the same problems over and over: founders and GTM leaders drowning in manual work, struggling to scale what works, and watching opportunities slip through the cracks. AI can fix a lot of that — if you know how to implement it properly.

CRO

£55m+

Pipeline generated

15+

Years in GTM

The journey

2024 - Present

Founder

AI GTM Studio & RevvedUp

Building AI-powered GTM tools for B2B founders. RevvedUp focuses on AI-native ABM, while AI GTM Studio delivers custom AI workflows for sales and marketing teams — from enablement to content to coaching.

2021 - 2024

Chief Revenue Officer

Pion (Student Beans)

Led all commercial functions — sales, marketing, partnerships, and customer success. Scaled the GTM engine during a critical growth phase, built repeatable playbooks, and drove pipeline generation across multiple markets.

2018 - 2021

CRO (previously Marketing Director)

Attest

Joined as the first marketing hire, built the marketing function from scratch, then expanded to own the full commercial org. Took the company from early traction to Series A and beyond.

2015 - 2018

Head of Growth

Eventbrite

Led growth marketing for UK & Europe. Built and scaled acquisition channels, experimented relentlessly, and learned what it takes to drive growth at a company preparing for IPO.

Earlier

Various Marketing & Growth Roles

Agencies & Startups

Cut my teeth in digital marketing, demand gen, and growth — learning the fundamentals that still underpin everything I do today.

How I work

Strategy without execution is a deck

I've sat through enough consultant presentations that went nowhere. Every engagement ends with a working system — not a PowerPoint explaining what you should do next.

AI is a tool, not magic

AI can automate the repetitive stuff and surface insights you'd never find manually. But it needs to be implemented thoughtfully, with clear inputs and measurable outcomes.

Fast, opinionated, accountable

I have a bias for action. I'll tell you what I think will work, we'll build it quickly, and I'll own the outcome. No hedge-everything consulting speak.