Full-funnel growth for AI and SaaS startups.

I'm Cole Stark. I've run growth at two developer-facing startups, and I bring that playbook to early-stage teams as a full-time Head of Growth, a fractional one, or on a project.

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Stark Visibility is my growth consultancy for AI and SaaS startups: SEO and GEO, paid search, paid social and video, creator marketing, and growth analytics, delivered as a fractional or full-time Head of Growth. I was previously Head of Growth at Quadratic and Pieces for Developers.

~300k
users grown at Quadratic: −60%
blended CAC, quarter over quarter: 7,000+
organic signups per month: +1,700%
active users at Pieces for Developers

Strategy and execution from the same person.

Most startups end up with a founder doing strategy, an agency running ads, a freelancer writing content, and nobody owning the number. I've been the person accountable for that number every week, and I still do the work myself.

Attract

SEO and GEO, paid search, paid social and video, creator partnerships. Channels chosen by what your buyers actually use, not by what's easy to invoice.

Convert

Landing pages built for the query, programmatic use-case pages, launch campaigns, conversion tracking that's actually correct.

Measure

One reporting view across product data, analytics, CRM, and ad spend, so budget follows paying customers, not clicks.

How I can help.

SEO + GEO.

Organic signups from Google and from the AI answers that are replacing it. Keyword architecture, technical fixes, and a human-reviewed content engine.

Paid search.

Google Ads structured around conversion value, with tracking and attribution you can defend to your board.

Paid social + video.

Meta, TikTok, YouTube, LinkedIn, and X, with a creative testing cadence and honest incrementality reads.

Influencer + creator marketing.

Partnerships vetted for audience fit, briefed to convert, and measured by branded-search lift and promo attribution.

Growth analytics + reporting.

Impressions, clicks, engagement, conversions, activations, payments, and retention all analyzed to understand what produces your best customers.

Fractional Head of Growth.

Own the number, the channel mix, the agencies, and the reporting, without adding headcount.

Work.

Quadratic, AI spreadsheet

Built the organic engine (7,000+ signups a month, 1M+ monthly impressions), restructured paid to cut blended CAC 60% quarter over quarter, and shipped the reporting system the team still runs on.

Read the case study →

Pieces for Developers, developer productivity

Started as an SEO client: +268% organic impressions in the first quarter. They hired me as Head of Growth. Two years later: +1,700% active users, three Product Hunt launches, organic conversions +930%.

Read the case study →

Solo therapy practice

A new SEO/GEO-optimized website and a full Google Ads overhaul. Small budget, same discipline.

See the work →

Pick the format. The work is the same.

Full-time.

If you're hiring a Head of Growth, I'm open to the right seat. I've held it twice. About me →

Fractional.

I own growth for a few days a week: weekly number, channel mix, budget, contractors, reporting.

Project.

A defined sprint with a defined outcome: an SEO/GEO rebuild, a paid restructure, a tracking implementation, a launch. Usually four to eight weeks.

Advisory.

A few hours a month for a team that already executes and needs a second opinion with scar tissue.

Consulting is billed hourly, with room to structure things around a retainer or a project. Details on how we work →.

I've sat in your seat.

Accountable to a weekly number. Not to a deliverables list.
No AI slop. I scaled content ten times with AI in the loop and a human reviewing every piece. Benchmark-style data, real screenshots, opinions.
Ads across 10+ companies. Enough accounts to know what a healthy structure looks like, and what "the algorithm needs time" usually means.
I build the measurement first. A campaign nobody can measure is just an expense.
I've hired and managed agencies. So I know exactly what you're paying for, and I can direct yours if you'd rather keep them.