A minimum of 2 – 4+ years of experience in conversion rate optimization (CRO), website optimization, or growth-focused roles.A strong track record of designing and executing experiments that resulted in measurable business outcomes (e.g., increased conversion rates, revenue uplift).Experience working in high-velocity testing environments and a drive to continuously improve experimentation speed without sacrificing quality or learning value.Advanced analytical capabilities with hands-on experience interpreting quantitative data from platforms such as GA4, Amplitude, or Power BI.Strong conceptual thinking, with the ability to structure and prioritize experiments around strategic growth objectives.Excellent communication skills in English, with the ability to present insights and strategies clearly to stakeholders across functions and seniority levels.Experience with A/B testing tools (e.g., Convert) and familiarity with complementary insight tools (e.g., Hotjar).Preferred qualifications (not required): German language skills to better understand customer needs in DACH markets. Design and run A/B tests that directly impact subscription growth for one of Europe's leading EdTech platforms – 1M+ users, real experiments, measurable results.We’re looking for a (Senior) Conversion Rate Optimization (CRO) Specialist (gn) to join our Product Growth Team and help drive one of sofatutor’s most important goals: turning more parents into customers who trust us to support their children’s learning journey. In this role, your work will have a direct and measurable impact on the company’s success. By designing and running smart, strategic A/B tests, you’ll help increase user acquisition, activation, and retention across our subscription-based learning products. You’ll collaborate closely with designers, developers, data analysts, and senior leadership to uncover high-potential growth opportunities and turn insights into real results.📍 100% remote (EMEA) | ⏳ 32-40h/weekWhat we offer:Pick the benefits that matter to you:Flexible Work: Flexible hours, remote-first, up to 180 days/year from EU.Remote Setup: Laptop, headset, monitor + €100/2yrs for home office.Team Events: Regular meetups – online and in Berlin.Extra Time Off: 2 paid volunteering days + Dec 24 & 31 off.At sofatutor, we are committed to continuously developing an inclusive work environment that supports your growth - regardless of gender, marital status, sexual orientation, religious beliefs, age, disability, education, or ethnicity. We’d love for you to join us in shaping this together! ,[Define and implement growth experiments across the funnel — from hypothesis to launch and evaluation., Maintain a clear pipeline of experiments based on impact, effort, and learning value., Collaborate closely with design, engineering, and key stakeholders to translate testing concepts into high-quality experiments., Leverage analytics, user research, competitor insights, and best practices to identify opportunities and build strong hypotheses., Share experiment results, insights, and learnings transparently with the team and stakeholders to drive alignment and continuous improvement.] Requirements: CRO, Analytical skills, G4, Amplitude