Job Overview
Location
Serbia
Job Type
Full-time
Category
Data Science
Date Posted
June 13, 2026
Full Job Description
đź“‹ Description
- • Own and optimize the Facebook ad account end to end, including structure, bidding, budget allocation, and scaling for a core D2C subscription product.
- • Maintain high subscription volume while driving efficient CPA and positive ROAS across multiple geographies.
- • Prepare and present a clear weekly channel strategy with performance results and actionable next steps.
- • Continuously test new campaign structures, audiences, bidding strategies, and ad placements to avoid performance plateaus.
- • Run structured creative testing to identify winning ad angles, hooks, and formats, and proactively manage creative fatigue at high spend levels.
- • Collaborate closely with the creative team to develop high-performing ad creatives and provide data-driven feedback on messaging and creative direction.
- • Build custom performance models, analyses, and reporting using Excel, Tableau, and Mixpanel to track key metrics and inform growth decisions.
- • Develop growth plans based on CPA, ROAS, and ARPU cohort data in partnership with the data team.
- • Own the channel testing roadmap, including audience expansion, bidding optimization, geo-expansion, and landing funnel improvements.
- • Manage six-figure monthly ad spend on Facebook with clear ROI accountability and a proven track record of profitable scaling.
- • Operate autonomously with minimal oversight, making independent, data-driven decisions to drive consistent, high-ROI growth.
- • Work across multiple countries, running and scaling campaigns in diverse markets with localized performance optimization.
- • Maintain advanced proficiency in Excel to build performance frameworks and use Tableau and Mixpanel for deep-dive analytics and reporting.
- • Communicate clearly and directly with stakeholders, presenting insights, results, and recommendations with precision and impact.
- • Operate under high load, managing multiple campaigns, tests, and reporting streams in parallel without compromising quality or timeliness.
- • Actively seek new approaches beyond current successful tactics, avoiding status quo defense and prioritizing innovation in channel strategy.
- • Ensure all user acquisition efforts are aligned with web-to-web subscription funnels, optimizing for conversion at every stage.
- • Work within the CET time zone (±4 hours) to ensure optimal collaboration and real-time communication with the team.
🎯 Requirements
- • 3+ years of hands-on paid social experience with Facebook as the primary owned channel
- • Experience managing six-figure monthly ad spend on Facebook with clear ROI accountability
- • Proven track record of scaling high-volume, profitable subscription growth through web funnels for D2C products
- • Deep Meta platform knowledge: account structures, audience targeting, bidding strategies, and creative testing methodology
- • Advanced Excel skills and proficiency in Tableau and Mixpanel to build custom performance models
- • Multi-GEO experience running and scaling Facebook campaigns across multiple countries
🏖️ Benefits
- • Remote Work Environment: Work from anywhere with flexibility to promote work-life balance
- • Unlimited PTO: Unlimited paid time off to recharge without tracking days
- • Paid National Holidays: Paid time off for national holidays
- • Company-provided MacBook: Top-tier Apple MacBook provided for all employees who need it
- • Flexible Independent Contractor Agreement: Access to tax advantages, networking opportunities, reduced employment obligations, and full geographic freedom
Skills & Technologies
See exactly how your profile matches this role — strengths, skill gaps, and what to do about them.
About Ruby Labs Ltd.
Ruby Labs Ltd. is a London-based product studio that builds and scales consumer subscription mobile and web applications. The company focuses on health, wellness, and productivity verticals, developing apps such as Hint, Able, and the award-winning fitness platform FitCoach. Using data-driven growth and proprietary technology, Ruby Labs rapidly prototypes, launches, and iterates products to serve millions of global users. The team combines engineering, product design, and performance marketing expertise to create sustainable digital businesses. Founded in 2018, Ruby Labs operates a portfolio of self-funded apps, emphasizing user privacy, scientific validation, and long-term customer value.
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