CRO Specialist

About This Role

This role is for a specialist in conversion rate optimization and digital experimentation, capable of participating in the entire experiment lifecycle. This includes identifying opportunities, formulating hypotheses, technical implementation, analyzing results, and communicating learnings.

Requirements

• At least 3 years of experience in CRO, digital experimentation, product optimization, or digital analytics
• Experience designing and executing A/B, multivariate tests, and personalizations
• Ability to convert data, user research, and business objectives into clear and measurable hypotheses
• Practical knowledge of statistics applied to experimentation: significance, confidence intervals, sample size, test duration, minimum detectable effect, and results segmentation
• Good command of HTML, CSS, and JavaScript. Ability to implement variations, work with the DOM, and diagnose errors using browser tools
• Experience working with dynamic websites or SPAs and understanding aspects such as routes, application states, events, variant persistence, and flicker prevention
• Knowledge of digital analytics and tagging, especially GA4, GTM, data layers, and event validation
• Ability to analyze the impact of experiments on performance, Core Web Vitals, accessibility, and user experience
• Experience working with APIs, version control systems like Git, and differentiated integration, pre-production, and production flows
• Ability to collaborate with Product, UX, Content, Analytics, Development, and Architecture teams
• Ability to explain results and technical decisions to both technical and business stakeholders
• Professional level of Spanish and English

Nice to have:

• Experience with an experimentation platform such as Monetate, Adobe Target, Optimizely, or similar. It is not necessary to know all of them
• Experience in server-side, full-stack experimentation, feature flags, or progressive deployments
• Knowledge of Tealium, Quantum Metric, BigQuery, or equivalent tools
• Experience with Angular or other SPA frameworks
• Knowledge of AEM, static or headless web architectures, and CDN environments
• Experience in experimentation for iOS and Android mobile applications
• Knowledge of SQL and ability to contrast testing platform results with corporate data sources
• Experience working with multidisciplinary teams and large-scale organizations

Important Details

• Personal competencies: Analytical mindset and business impact orientation; Autonomy to lead an experiment from idea to evaluation; Judgment to distinguish between a quick implementation and one that needs development team involvement; Attention to detail and special sensitivity to data quality; Ability to prioritize, document decisions, and share learnings; Curiosity, pragmatism, and willingness to question hypotheses with evidence