Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. 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 roleOne of the RubyLabs’ portfolio companies is 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 ResponsibilitiesSupport end-to-end CRO cycles: research → hypothesis → testing → analysis → rollout, in collaboration with the Senior Growth Manager.
Assist with funnel analysis to identify friction points and optimization opportunities across multiple reverse lookup funnels.
Help translate hypotheses into clear experiment requirements and briefs for engineers.
Work closely with engineering teams to ensure experiments are implemented accurately and meet quality standards.
Track experiment status, results, and learnings across multiple funnels.
Analyze test outcomes using basic statistical understanding to identify winners, losers, and follow-up opportunities.
Maintain and regularly update the experimentation backlog, ensuring priorities, statuses, and documentation are always current.
Document learnings and contribute to building a structured experimentation knowledge base.
Communicate clearly with internal stakeholders on experiment progress, outcomes, and next steps.
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.
Fluent English: Strong written and verbal communication skills.
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.
BenefitsDiscover the perks of being part of our vibrant team! We offer:
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. Read more about it here: https://docs.google.com/document/d/1nkrN76JlZkbKj9WSOhlT1_mni_CZeDkHdwfIjPXVwvk/preview?tab=t.0#heading=h.ndsdl4wapxtt
Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!
Interview ProcessAfter submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received. If we see a potential fit, we proceed with the following steps:
Recruiter Screening (40 minutes)
Take Home Assessment
Technical Interview (45 minutes)
Final Interview (30 minutes)
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.
#LI-Remote
Skills Required
- 2+ years hands-on experience running CRO experiments on high-traffic consumer or subscription funnels.
- Strong understanding of the CRO lifecycle and experiment design, execution, and evaluation.
- Ability to independently review experiment results and funnel metrics using Mixpanel, GrowthBook or Tableau.
- Detail-oriented and reliable managing experiments from idea to production.
- Comfortable working with engineers and product teams to ensure high-quality implementation.
- Strong ability to manage multiple experiments, timelines, and priorities.
- Curious, eager to learn, and motivated to expand CRO and experimentation skills over time.
- Fluent English with strong written and verbal communication skills.
- Located within approximately ±4 hours of CET for collaboration during working hours.
What We Do
Ruby Labs is a leading tech company that creates innovative consumer products across the health, education, and entertainment sectors. Our journey began in 2018 in London, UK, as a collaboration between two friends with extensive expertise in business, technology, and marketing. From the start, our vision has been to build a world-class tech company that develops category-leading products used by millions of users worldwide. We aim to create easily accessible platforms that offer engaging and valuable experiences across various aspects of people's lives. Since our launch, we've successfully brought seven consumer products to the global market, each addressing unique needs in health, education, or entertainment.
