You don’t need another agency. You need a system — and a partner who’s done it before.

After two decades building marketing engines from the ground up, I’ve led growth across startups, scale-ups, and global brands — from biotech and insurance to fashion, fintech and SaaS.

I’ve sat on both sides of the table — leading agency teams, scaling in-house, and mentoring founders through change.

Most agencies sell hours. I deliver outcomes. Most outsource execution. I build and run the system — with my in-house team of custom GPTs and proven playbooks

Here’s what sets Vibe apart:

• Customer-first, strategy-led: We start with your customer and shape everything around them.

• One system, joined up: No random tactics — just one engine that works together.

• AI from day one: GPTs accelerate insight, content, and scale.

• No fluff, no juniors: You get one senior partner, delivering real commercial impact.

If you’ve been burned by bloated agencies or distracted freelancers, you’ll feel the difference from day one.

Stephen Rumbelow

Founder, Vibe MKTG | Fractional CMO | System Builder

I’ve spent 20+ years building marketing systems that drive momentum — for brands across B2B, B2C, and beyond.

I’ve led award-winning campaigns, mentored agencies, and built demand engines from scratch. I’ve scaled performance across sectors, supported Series A founders, and repositioned global teams — all with one focus: driving growth that lasts.

In my career, I’ve helped generate over £50 million in commercial growth for the companies I’ve worked with. Now I bring that experience to every client I work with — powered by AI, and delivered with no fluff.

Sector experience: Biotech & Life Sciences, Insurance & Financial Services, Fashion, Wellness & eCommerce, Fintech, SaaS, and Technology, Publishing, Education, and Mobile Telco.

Brands I've worked with: Virgin · Aviva · Isogenica · Sona Insurance · Ro&Zo · Live Unlimited · Optimise Media · Hiscox · Royal Society of Chemistry.