Founder @ 42 - Paid Media, Creative, SEO & RevOps for B2B

Help B2B companies scale @ 42 Agency
Helping inter-generational families connect with learning @ Little Robin Hood
Build better exclusions for online ads @ exclusion sites 
Publisher and writer  on B2B marketing insights @ 42slash.com 
Various Projects at rext.in

Kamil Rextin

I have been hacking away at Claude Code a lot over the holidays and it's official: I'll be hosting a workshop on Claude Code with Exit Five  Thank you so much to Matthew Carnevale  for making it happen.

If you're curious about how Claude Code can help you as a marketer, doing anything from data analysis to generating content, building custom agents, would love to see you there. Let me know if you have any questions you want me to address or use cases that are most interesting / curious about!

Attribution said paid social drove 257 leads for a B2B SaaS client.

The real number was closer to 2,137.

That's an 8.3x blind spot.

Here's how we found it. We matched companies that had any LinkedIn ad exposure against their CRM data—not just clicked. Not just converted. Any exposure.

Companies with LinkedIn exposure had a 6.72% opportunity rate. Companies without? 0.83%.

That's an 8.1x lift. Statistically significant.

Your crm model is lying to you. Not because it's broken. Because it was never designed to measure what paidsocial actually does.

paidsocial doesn't convert people in-session. It makes your brand familiar. It warms up accounts. It does the work that later appears as "direct" or "organic" or the sales team taking credit.

If you're measuring paidsocial the same way you measure search, you're measuring it wrong.

The question isn't whether LinkedIn is working. It's how much credit you're giving to channels that are just harvesting what LinkedIn planted.

I don't want to explain my content system every time I use it.

So I saved it as a Claude Code agent.

It knows the 5 themes. It knows the tease-publish-promo rhythm. It knows each essay spawns 6-9 LinkedIn posts and 1-2 carousels. It knows to hit the ClickUp API with the right tags, due dates, and assignments.

Next time I need content? I invoke the agent. It doesn't ask clarifying questions about structure. It just builds.

This is the shift most people miss about AI. Everyone's focused on "prompting better." That's a trap. You're doing the same work over and over.

Build systems, not prompts.

We spent the time once to encode our entire content engine - 10 months, 20 essays, 200+ derivatives - into something reusable. Now it's a tool, not a task.

The first time takes effort. The second time takes seconds.

What if your best processes were preserved and reusable instead of stuck in someone's head?

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I built a paid media co-pilot this weekend with Claude Code. Here's what actually matters.
Most of what it does is table stakes - unified dashboard across LinkedIn/Meta/Google, performance tracking, ad variation generation, approval workflows.

But there's one piece that fundamentally changes how I think about audience building:
Natural language audience targeting for LinkedIn.
Here's the problem we've all experienced:
You know exactly who you want to target. "Marketing leaders at mid-market B2B SaaS companies focused on demand generation."
But translating that mental model into LinkedIn's targeting interface means:

Clicking through job function taxonomies
Searching job titles one by one
Guessing which seniorities to include
Hoping you didn't miss relevant segments
No way to validate you captured your actual ICP

The new workflow:

Describe your audience in plain language
The tool analyzes your website + description
Queries a database of LinkedIn's complete targeting taxonomy (job functions, titles, seniorities, skills)
Matches and ranks relevance (highly relevant, partial matches, not relevant)
Shows you the API targeting script it will generate
Saves the audience for reuse
Pushes it directly to LinkedIn as a draft campaign

Why this matters:
When you stop treating ad platforms as the primary interface and start treating APIs as the interface, your workflow changes from searching to describing.

You're no longer constrained by platform UX. You're expressing intent and letting systems translate that into platform-specific parameters.
This is the same shift that happened with SQL → natural language for databases.
The platform interface becomes a validation layer, not the creation layer.
What I learned building this:
LinkedIn's API doesn't return audience penetration (annoying).
Demographics require a separate API that returns URNs but not company names (very annoying).
But the targeting taxonomy is comprehensive if you structure it properly.
And Claude Code made building this dramatically faster than traditional development would have been.

Shout out to the 42 Agency team, especially Ma Cherrie Dee Gonzales and Alejandra Céspedes, for creating the custom box and designing the it

Vanessa Griffiths & team  awesome partners to work with on this .

If you want an awesome giftbox, send me a DM (if you need RevOps or Demand Gen support) & I will ship you one personally.

Fractional CMO for Seed to Series B startups | Founding marketing leader at Float & CrowdRiff 📈 | Builder of standout startup brands

I already thanked them privately but nice touch from 42 Agency on their client gifting program. You don't have to be a big company to do things well. (And of course the bigger thanks is for their help untangling some thorny MOPS problems for me!). Well done Kamil Rextin Alejandra Céspedes.

NEW ESSAY: Paid Media Isn't Your Problem (Coming January 20th)

Last quarter, a B2B SaaS company came to us: "Our paid media isn't working."

We pulled their CRM. 47% of leads were sitting in "open" status. Never worked.

Their paid wasn't broken. Their system was.

This essay breaks down the 3 problems disguised as paid media problems—and introduces Compound GT

We just published a new essay on our Substack: 

Why most paid media problems are not actually paid media problems but they're more measurement or GTM stack problems. 


Check out the link below. Let me know if it interesting or if you have any feedback

DemandFlex Consulting

Helping multiple seed to Series-A companies in the US & Canada strengthen their pipeline through demand generation strategy, paid ads and Hubspot marketing ops.

Demand generation and Marketing Ops Consultant

Diversio

Demand gen consultant

(Series-A) | DEI software targeting Midmarket and Enterprise HR leaders

Head of Demand Generation

42 Agency

Owned demand gen/Mops for accounts like Float, Profitwell, Cin7, Mathison, Nudge & Guru.

42/Agency helps B2B SaaS companies lay the foundational pieces to scale their marketing through Performance Marketing, Marketing Operations, CRM Implementations and Growth Strategy.

Senior Demand Generation Strategist

Demand generation & Marketing Operations Strategist

CEO Law

CEO Law is a legal B2B tech startup that connects enterprise companies with corporate lawyers.

Marketing Specialist

Chrysalis

Chrysalis is a disruptive B2B K-12 education technology company funded by Gray Matters Capital which transforms the way children learn in classrooms

Marketing Team Lead

Associate Marketing

Schneider Electric

Marketing Intern

Wipro

Project Engineer - Technical Support

- B2B saas/tech marketer skilled in demand generation and marketing operations with a strong foundation in marketing (master's)
- Immigrant who loves teaming up with genuine people and leaders

TECHNICAL SKILLSET:
CRM and Marketing Automation - Hubspot, Salesforce, Zapier
Ad platforms - LinkedIn ads, Facebook ads, Google ads, Twitter ads, Capterra
Tracking & Data visualization- GA4, Google Tag Manager, Databox
Sales Enablement - Calendly, RevenueHero, Drift, Outreach, Apollo
Audience research - Sparktoro, SEMrush
Certifications - Digital marketing, Customer-Led Growth, Hubspot, Drift

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The Battle

Kamil Rextin

Eugene Wilfred

Followers

Posts

Engagements

Likes

Performance Score.css-goub6s{font-size:var(--chakra-fontSizes-md);font-weight:500;color:var(--chakra-colors-gray-600);display:block;margin-top:var(--chakra-space-1);}Kamil Rextin's LinkedIn Performance

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