Senior User Acquisition Manager (Facebook)

About us

Ruby Labs is a leading technology company specialising in innovative consumer products across multiple technology sectors. The company focuses on D2C (Direct-to-Consumer) subscription products. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/

About the role

We are looking for a Senior User Acquisition Manager to own and scale Facebook(Meta) for one of our core D2C subscription products. The funnel is simple:

ad → quiz → trial → subscription (web-to-web)

. The scale is not:

40+ countries, 20+ languages, one of the largest Meta budgets in its category.

You will be measured on two numbers:

• daily subscriptions and cohort ROI
• — not clicks, not CTR, not platform-reported ROAS.
• You'll operate with serious leverage: an API-driven build pipeline and AI tooling handle the mechanical work. Your job is judgment — what to scale, what to cut, where the next dollar goes. The bar is high and so is the upside: performance here is directly and significantly rewarded, and strong operators take on bigger scope fast.

Key Responsibilities

• Channel Ownership: Own the Facebook account end to end — structure, budgets, bidding, geo mix — keeping subscription volume high at target CPA and ROI.
• Scaling & Stability: Scale winners without breaking CPA; keep delivery stable at high spend and catch problems before they cost money.
• Testing: Run a continuous testing pipeline — creatives, structures, bidding (highest volume / cost cap / bid cap), placements, geos and languages. Kill fast, scale what works.
• Creative Ideas: Own the creative direction for the channel — hooks, angles, formats — and brief the creative team with data-backed feedback.
• Working with Data: Make decisions on real cohort revenue from our BI, not on Ads Manager numbers. Break performance down to country × creative × bid level and build your own reports.
• Account Health: Protect ad accounts, pages and Business Managers — policy-safe copy and landings, appeals, backups.
• AI & Automation: Automate every repeatable part of your workflow with AI and keep manual work to a minimum.

Qualifications

• Must-Have Experience
• 2+ years hands-on Facebook as the primary channel you personally owned.
• Personally owned $400K+/month on Meta with direct accountability for CPA / ROI targets — your budget, not your team's or agency's total.
• Subscription funnels: drove subscriptions or trials through web funnels (web-to-web) or subscription apps for D2C products.
• Multi-GEO: ran and scaled campaigns across many countries and languages at once.
• Analytics: comfortable with cohorts, LTV, payback and the gap between platform and BI numbers.
• AI in daily work: uses Claude, ChatGPT or equivalents daily for analysis, reporting and automation — not just aware of them.
• Working proficiency in English (B2+).
• Not a Fit
• Mostly agency experience (spread across many small clients)
• E-commerce / catalog-only background (DPA, Shopping, basket ROAS)
• Who You Are
• Full owner of your zone
• — from diagnosis to result, no reminders needed
• Analytical
• — every scale or kill decision has a period, a threshold and a dollar amount behind it
• Plans ahead
• — runs the channel against a plan weeks and months out
• Fast under load
• — many campaigns and tests in parallel without quality slipping
• Ambitious
• — wants to grow fast and prove it with performance
• Location
• Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.

Life at Ruby Labs

At Ruby Labs, we move fast, aim high, and expect the same from our team. We’re not here to play small—we’re here to build, grow, and win. That means we look for people who are ambitious, driven, and ready to give their best every single day.

This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle. If you’re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen.

Here, effort is matched with reward. We recognize those who go all in and deliver results, and we create space for people who want more—more responsibility, more growth, and more success.

All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.