Growth Manager (Conversion Rate Optimization)

Ruby Labs Ltd.

Job Overview

Location

European Union

Job Type

Full-time

Full Job Description

📋 Description

• We are looking for a highly experienced and specialized Growth Manager (Conversion Rate Optimization) to join our team.
• You’ll be involved in every stage of the CRO process - from research and hypothesis development to testing, analysis, and rollout - while focusing primarily on execution quality, organization, and learning.
• This is not a role for passive recommendations. You will actively contribute to experiments, ensure they are implemented correctly, and help turn insights into measurable improvements.
• Key responsibilities include rollout, funnel analysis, translating hypotheses into clear experiment requirements, working closely with engineering teams, tracking experiment status, analyzing test outcomes, maintaining and regularly updating the experimentation backlog, documenting learnings, and communicating clearly with internal stakeholders.
• Qualifications include CRO Foundation: 2+ years of hands-on experience running CRO experiments, ideally on high-traffic consumer or subscription funnels, Experiment Literacy: Strong understanding of the CRO lifecycle and how experiments are designed, executed, and evaluated, Data Skills: Ability to independently review experiment results and funnel metrics using tools such as Mixpanel, GrowthBook or Tableau, Execution-Focused: Detail-oriented and reliable when managing experiments from idea to production, Collaboration Skills: Comfortable working with engineers and product teams to ensure high-quality implementation, Organization & Planning: Strong ability to manage multiple experiments, timelines, and priorities without things falling through the cracks, Growth Mindset: Curious, eager to learn, and motivated to expand CRO and experimentation skills over time, and Fluent English: Strong written and verbal communication skills.

🎯 Requirements

• CRO Foundation: 2+ years of hands-on experience running CRO experiments, ideally on high-traffic consumer or subscription funnels.
• Experiment Literacy: Strong understanding of the CRO lifecycle and how experiments are designed, executed, and evaluated.
• Data Skills: Ability to independently review experiment results and funnel metrics using tools such as Mixpanel, GrowthBook or Tableau.
• Execution-Focused: Detail-oriented and reliable when managing experiments from idea to production.
• Collaboration Skills: Comfortable working with engineers and product teams to ensure high-quality implementation.

🏖️ Benefits

• Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
• Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge.
• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
• Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere.

Skills & Technologies

Ruby

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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