Lead User Acquisition Manager

Ruby Labs Ltd.

Job Overview

Location

Serbia

Job Type

Full-time

Full Job Description

📋 Description

• Own and maximize ROAS across all paid acquisition channels including Meta, Google, and TikTok for a core D2C subscription product.
• Develop and execute data-driven user acquisition strategies focused on driving efficient CAC and sustainable growth based on LTV:CAC ratios and ARPU.
• Design and optimize campaign structures across all active platforms to ensure maximum performance and scalability.
• Continuously test and refine targeting parameters, bidding strategies, and campaign configurations to improve conversion rates and reduce cost per acquisition.
• Collaborate closely with the creative team to develop high-performing ad creatives, identifying new selling angles, messaging strategies, and creative formats.
• Provide data-backed feedback to guide creative direction and ensure alignment between performance goals and creative output.
• Build and maintain robust performance reporting and attribution frameworks to track campaign effectiveness and inform strategic decisions.
• Own the end-to-end testing roadmap including A/B tests, geo-expansion initiatives, channel scaling experiments, and creative iterations.
• Use quantitative insights from Tableau, Google Analytics, Excel, and SQL to drive every tactical and strategic decision.
• Operate with structure and rigor, ensuring performance stability and resolving issues proactively without delay.
• Identify scaling opportunities across paid channels while maintaining efficiency and avoiding performance degradation.
• Function as a hands-on, execution-focused leader with full accountability for acquisition metrics and financial outcomes.
• Think commercially as a profit-focused operator, treating user acquisition as a direct growth engine tied to company profitability.
• Work autonomously with minimal oversight, delivering consistent results and taking ownership of outcomes.
• Operate within the CET time zone (±4 hours) to ensure real-time collaboration with team members and stakeholders.
• Maintain a high-performance culture by prioritizing data over intuition, results over activity, and accountability over process.

🎯 Requirements

• 3+ years in performance marketing with a strong focus on D2C subscription products (web-to-web, web-to-app)
• Proven track record of maximising ROI and scaling paid acquisition across Meta, Google, and TikTok
• Deep platform expertise in paid social and search advertising ecosystems
• Strong quantitative and analytical skills with proficiency in Tableau, Google Analytics, Excel, and SQL
• Experience working with attribution models and performance reporting frameworks
• Highly analytical, execution-focused, and commercially minded with self-directed accountability

🏖️ Benefits

• Remote Work Environment: Work from anywhere with flexibility to set your own schedule
• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize well-being
• Paid National Holidays: Receive paid time off for recognized national holidays
• Company-provided MacBook: Receive a top-tier Apple MacBook for professional use
• Flexible Independent Contractor Agreement: Access tax advantages, autonomy, networking opportunities, and reduced employment obligations

Skills & Technologies

Ruby

Design

Senior

Remote

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Ruby Labs Ltd.

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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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