About Castleberry MediaCastleberry Media is a B2B media and demand generation company. We run a portfolio of hyper-niche publications read by senior decision-makers in industries like mining, energy, data centers, packaging and cruise operations, and we use them to connect companies with the buyers who matter to them.

AI is at the core of how we work. Our editorial operation runs on AI agents, and we want the rest of the business to work the same way. That's where you come in.

The roleWe're looking for a hands-on marketer who lives inside ad platforms, thinks in automations and gets genuinely excited about building with AI.

You'll own paid media across up to 10 or more ad accounts on LinkedIn, Meta and other platforms. You'll run the automated systems that turn a form fill into a real conversation within minutes. And you'll help us build the AI agents that take over the repetitive parts of the job, so you can spend your time on strategy, testing and growth.

You'll also own marketing for Castleberry itself: content, video, and new ways to find and win clients.

This isn't a role for someone who wants to manage a large team and big agency budgets. It's for someone who likes to build, test, measure and ship. You'll report directly to our founder.

What you'll doPaid media

- Run and optimize campaigns across up to 10+ ad accounts, mainly on LinkedIn, plus Meta and other platforms.
- Supervise the AI agent that optimizes and uploads ads: review its work, catch what it gets wrong and take over when needed.
- Own the full cycle: audiences, creative, lead gen forms, budgets, A/B tests and reporting.




- Run lead generation campaigns built around valuable content (reports, guides, scorecards and assessments) that people download or complete in exchange for their details.

Automation & lead capture
- Build and maintain the automations that capture leads from LinkedIn Lead Gen Forms and other sources, using Zapier, Make or similar tools.
- Set up and manage automated follow-up on WhatsApp (Wati or similar) and email, so every new lead hears from us right away.
- Keep data flowing cleanly between ad platforms, CRM, messaging and email tools, and fix it when it breaks.

AI & agents
- Help design the AI agents that will run parts of our ad operations, working side by side with our developers.
- Spot the repetitive work in your own role and build AI solutions to handle it.
- Know what an API can and can't do, where AI is reliable and where it isn't, and turn that into clear requirements for the dev team. You won't need to code the integrations, but you need to know what's possible.

Marketing for Castleberry
- Decide what content we publish to market our own services and how we find new clients.
- Edit short-form video and produce content for LinkedIn and other channels.
- Propose and test new growth channels and ideas. We're very pro-experimentation.
- Join sales calls with prospects from time to time.





What we're looking for
- 3–5 years running marketing, ideally at a small or mid-sized company or startup where you were hands-on, not just managing agencies.
- Proven experience running paid ads, especially LinkedIn Ads, plus Meta Ads.
- Hands-on experience with Zapier, Make, n8n or similar, plus CRM and email or WhatsApp automation tools.
- A real interest in AI: you already use AI tools every day, and you've built (or are itching to build) agents, custom GPTs, workflows or automations.
- A working understanding of APIs, webhooks and how tools connect to each other.
- Video editing skills (CapCut, Premiere, Descript or similar).
- Professional English, written and spoken.

Fluent

Spanish (required).

- Curiosity and speed. You're comfortable experimenting, being wrong sometimes and measuring what actually worked.

Nice to have
- B2B lead generation or demand generation experience.
- Experience with lead magnets, scorecards or interactive content.
- Comfort on calls with senior buyers, or some sales experience.
- Familiarity with no-code or low-code tools.

What we offer
- Fully remote, as an independent contractor.
- A real seat at the table shaping how an AI-first media company grows.
- Freedom to test ideas and build with the latest AI tools.
- A small team, fast decisions and direct access to the founder.

How to applySend your CV and a short note in English telling us about one campaign or automation you built and what happened. Bonus points if you tell us about something you've built with AI.

Our process includes a short practical exercise.

📌 Growth Marketing & Paid Media Lead (AI-first) (Colombia)
🏢 Castleberry Media
📍 Colombia