About us
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 role
One 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 Responsibilities

Support 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.

Qualifications

CRO Foundation: 2+ years of ha

📌 Growth Manager (España)
🏢 Ruby Labs
📍 España