I’m the CMO who writes the SQL, so I catch a bad number before your board does.
Paid media, lifecycle, and the attribution that proves which of it worked. I grew Macy’s paid channels to a billion a year in attributed revenue, helped take Redbubble public, and today I’m interim CMO at Bluethumb, Australia’s art marketplace.
I’m the CMO who writes the SQL, so I catch a bad number before your board does. Paid media, lifecycle, and the attribution that proves which of it worked. I grew Macy’s paid channels to a billion a year in attributed revenue, helped take Redbubble public, and today I’m interim CMO at Bluethumb, Australia’s art marketplace.
Two minutes with Drew
The short version, in two minutes.
Who I am, what I build, and the kind of problem that makes me pick up the phone. Two minutes, in my own words.
Transcript
I’m Drew Brosnan. I’m the CMO who writes the SQL, so I catch a bad number before your board does. Here’s the short version. I run growth marketing and the technology underneath it. The paid media that brings customers in. The lifecycle programs that keep them. And the data plumbing that tells you which of it actually worked. At Macy’s, I grew the paid channels to a billion dollars a year in attributed revenue. At Redbubble, I scaled the shopping feeds by two thousand percent, to tens of millions of products. I built machine-learning bidding before the platforms offered it. I cut more than half a million dollars a year from the martech stack. Then we took the company public. At Net32, I built the company’s first marketing-mix model and lifted brand share of voice twenty-two percent in six months, through an acquisition. Today I’m fractional CMO at Bluethumb, Australia’s art marketplace. The rare part is that I build the measurement myself. I trained as an engineer. I write the SQL, model the attribution, and stand up the ETL. So when a number looks wrong, I catch it before it reaches a board deck. Fewer opinions. More evidence. The problem that makes me pick up the phone? You’re spending real money on marketing and nobody can say, with confidence, which half is working. Or your board is asking a question your dashboards can’t answer. If that sounds familiar, get in touch. I’m open to senior marketing roles and to fractional or interim CMO work. Everything is at drewbrosnan dot com, and I read every message myself.
Exhibit IA short introduction: the work, the numbers, and how I run a marketing org.
$1BTracked revenue a yearMacy’s paid channels, 2015
5B+Products trackedRedbubble catalog coverage
+2,000%Shopping-feed scaleTo tens of millions of products
+22%Brand share of voiceNet32, in six months
>$500KSaved per yearRedbubble, a 37% contract cut
IPOPublic listingRedbubble, on the ASX
The retrospective
Portfolio
7 rooms, one per employer, each with the projects done there and the numbers
behind them.
Room I: the gallery within the gallery2023 to Present
Interim CMO for Australia’s art marketplace: monthly spend scaled from $100K to $400K through the holiday peak, with AI-personalized creative lifting conversion about 20%.
4xmonthly spend, scaled into the Q4 holiday peakEnter the room →
I ran marketing for a dental-supply B2B marketplace through 33% annual revenue growth and the venture diligence that ended in its acquisition by Riverside Partners.
33%annual revenue growthEnter the room →
Room III: the persistence of inventory2016 to 2023
Redbubble (later Articore) · Marketing Performance Manager to Marketing Director
Seven years scaling an artist marketplace through its public listing, with search and feed campaigns grown to roughly 40% of daily gross transaction value.
41%YoY marketplace revenue growth in the Director eraEnter the room →
Interim CMO for Australia’s art marketplace: monthly spend scaled from $100K to $400K through the holiday peak, with AI-personalized creative lifting conversion about 20%.
Scaled the full marketing P&L from $100K to $400K a month through the Q4 holiday peak.
Rebuilt positioning, messaging, value props, and brand voice, with a visual refresh across creative system, photography, and design language.
Shipped AI-generated, personalized 1:1 product-feed graphics at scale, millions of images, for about a 20% conversion lift over standard creative.
Roughly doubled creative output velocity with no performance degradation, under human-in-the-loop review and privacy protocols.
Consolidated four messaging tools into Klaviyo and cut martech licensing costs about 25%, leading six in-house marketers and five agency members across two agencies.
I ran marketing for a dental-supply B2B marketplace through 33% annual revenue growth and the venture diligence that ended in its acquisition by Riverside Partners.
Built the company’s first marketing-mix model and the ETL behind it, unifying more than ten ad-publisher sources.
Presented marketing positioning and performance to the board and M&A teams during venture-capital due diligence; the acquisition by Riverside Partners closed.
Ran a verified-supplier brand campaign, video-first across YouTube, CTV on MNTN, Criteo, and Meta: brand share of voice up 22% in six months, measured by survey.
Grew lifecycle LTV 20% quarter over quarter for six months on Klaviyo and Attentive SMS.
Launched server-side Google Tag Manager, optimized a 50,000-product catalog across Google and Facebook, and moved project management from Monday.com to Jira on an agile kanban system.
Marketing Performance Manager to Marketing Director
2016 to 2023
San Francisco, CA
Roles held
2016 to 2018 Marketing Performance Manager
2018 to 2019 Senior Marketing Manager
2019 to 2023 Marketing Director
Search & feed
Shopping / PLA
ML bidding
Google Marketing Platform
IPO scale
Seven years scaling an artist marketplace through its public listing, with search and feed campaigns grown to roughly 40% of daily gross transaction value.
Moved the channel from fully agency-run to hybrid in-house at 20% YoY revenue growth from 2016 to 2018, doubled the team, and led the European market launch: UK, Germany, Spain, and France, plus the Canada expansion.
Launched analytics covering 80% of sellable products, more than 5 billion SKUs, via server-side and client-side Google Tag Manager.
Co-built ML bidding and product-scorecard algorithms with a doctoral data scientist, scoring more than 100 million products on performance signals.
Scaled shopping feeds 2,000%, from tens of thousands to tens of millions of products, across Google Merchant Center, Facebook Catalog, Criteo, GDN, and Yahoo dynamic product ads at 3B+ SKU scale.
Consolidated GA360, SA360, CM360 and DV360, and Productsup across Redbubble and TeePublic: 37% contract savings, more than $500K a year.
Marketing-mix modeling and multi-touch attribution
Analytics (GA360, GA4, CM360, Adobe, Coremetrics)
Tag management (server and client GTM360)
ETL and warehousing (Fivetran, Snowflake, Sigma)
Feed management (Productsup, Feedonomics)
Customer data platforms (Segment)
The machine in the studio
AI & Technical
Generative creative at scale (Midjourney, DALL-E, OpenAI, Claude)
ML bidding and product scoring, built before platform AI
Prompt frameworks and human-in-the-loop governance
Agentic workflows with Claude Code
SQL, Python, and RegEx
Server-side tagging and data pipelines
Google Cloud ML Engineer certification
A soft watch, on schedule
I run marketing like an engineer, because I trained as one.
I lead growth marketing and the technology under it: the paid media that brings customers in, the lifecycle programs that keep them, and the data plumbing that tells you which of it actually worked. I have run Macy’s search budget, scaled Redbubble’s shopping feeds through its path to a public listing, directed marketing at Net32 through its acquisition, and serve as interim CMO, on a fractional basis, for Bluethumb, Australia’s art marketplace.
The rare part is that I build the measurement myself. I write the SQL, model the attribution, and stand up the ETL, so when a number looks wrong I catch it before it reaches a board deck. I studied computer science engineering, and it shows in how I run a marketing org: fewer opinions, more evidence.
Currently Alongside Bluethumb, I am co-building Emergent Solutions, a fractional CTO and CFO consultancy with an open-source-first go-to-market stack. emergentsolution.com
Exhibit II: videoThe studio, in two minutesExhibit pending: The studio, in two minutes
Exhibit IIHow I run a marketing org: the dashboards, the SQL, and the weekly rhythm.
Let’s compare notes
Get in touch
I am open to senior marketing roles and to fractional or interim CMO work. Email me, or find me on LinkedIn. I answer everything.