Ruby Labs Ltd. logo

Growth Manager (use.ai)

Job Overview

Location

European Union

Job Type

Full-time

Category

Product Management

Date Posted

May 12, 2026

Full Job Description

đź“‹ Description

  • • The Growth Manager (Senior Growth Product Manager) role at Ruby Labs Ltd. is critical for driving top-of-funnel growth by optimizing user registration and payment funnels in a B2C environment, directly impacting conversion rates, lifetime value, and customer acquisition cost.
  • • Day-to-day responsibilities include launching and iterating on product experiments daily and weekly, owning the experimentation backlog, writing PRDs and experiment briefs, generating experiment ideas using UX research and data insights from Mixpanel and Claude, managing the full experiment lifecycle, collaborating with developers for fast delivery, overseeing release flows across dev/staging/production, ensuring accurate tracking and A/B test setup via GrowthBook and Mixpanel, and delivering daily/weekly performance insights.
  • • Ruby Labs is a leading tech company creating innovative consumer products across health, education, and entertainment industries, with a mission to drive the future of consumer-led products through passionate, high-impact teams.
  • • In this role, the individual will develop deep expertise in high-velocity experimentation, master end-to-end funnel optimization, strengthen cross-functional collaboration with engineering, and directly influence key business metrics while advancing their career in product-led growth.

🎯 Requirements

  • • 5+ years of combined experience in product management and growth, with at least 3+ years in growth/product optimization roles
  • • Proven track record of optimizing web funnels in B2C environments, directly impacting CR, LTV, and CPA
  • • At least 1 year of experience in a high-velocity growth environment with daily or weekly experiment launches
  • • Strong hands-on experience running A/B tests end-to-end (hypothesis → setup → analysis → decision)
  • • Deep proficiency with product analytics tools, especially Mixpanel (funnels, cohorts, event-based analysis)
  • • Experience with experimentation and feature flagging tools like GrowthBook

🏖️ Benefits

  • • Remote Work Environment: freedom to work from anywhere, anytime, promoting healthy work-life balance
  • • Unlimited PTO: enjoy unlimited paid time off to recharge and prioritize well-being
  • • Paid National Holidays: celebrate and relax on national holidays with paid time off
  • • Company-provided MacBook: seamless productivity with top-notch Apple MacBooks provided
  • • Flexible Independent Contractor Agreement: flexibility, autonomy, tax advantages, and freedom to work from anywhere

Skills & Technologies

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Ruby
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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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