Job Summary: The Ri Happy Group is seeking a professional to lead the development of attribution models, optimize media investments, and maximize sales margin and volume. Key Highlights: 1. Work at Brazil's largest toy retail chain 2. SUPER Culture: Satisfaction, United, Passion, Essence, Respect 3. A Great Place to Work that values development and fun *If your childhood dream was to work in a place where magic happens every day... guess what? It can become reality NOW!* At the **Ri Happy Group**, Brazil's largest toy retail chain, we believe growing can (and should!) be fun. Here, being *SUPER* is more than a value—it’s our way of enchanting, surprising, and transforming the world around us. Bring your essence, your story, and your unique sparkle. Here’s what we offer: * **S**atisfaction in Service * **U**nited by Fun * **P**assion for the Business * **E**ssence of Simplicity * **R**espect for Tomorrow **Liked it? Then, come on in!** **Responsibilities and Duties** **Your day-to-day will focus on:** * **Modeling and Attribution:** Lead the development of attribution models (MTA/MMM) to measure the true efficiency of media investments (Online and Offline) and optimize ROAS. * **Pricing & Elasticity:** Conduct complex price elasticity and promotional sensitivity studies, identifying opportunities to maximize margin and sales volume. * **Advanced CRM:** Go beyond basic RFV. Create customer behavioral clusters (using Python/K-Means) to personalize communication and predict churn (LTV Prediction). * **Analytics Engineering:** Extract, process, and manipulate large volumes of data (ETL) using advanced SQL and Python, ensuring data integrity for decision-making. * **Testing and Experimentation:** Design and measure A/B tests and control groups (Holdout) with rigorous statistical methodology to validate campaign and commercial action hypotheses. * **Data Storytelling:** Translate complex mathematical models into simple, actionable business recommendations for Executive Leadership and C-Level executives. **Requirements and Qualifications** * **Advanced SQL:** Full mastery of complex queries (Window Functions, CTEs, optimized Joins) in cloud-based databases (BigQuery, Redshift or similar). * **Python for Data:** Proficiency in data manipulation and analysis libraries (Pandas, NumPy) and visualization libraries (Matplotlib, Seaborn). * **Applied Statistics:** Knowledge of statistical inference, correlation, regression, and hypothesis testing. * **Data Visualization:** Experience with Power BI (Advanced DAX) or Tableau, with emphasis on usability and decision-making. * **Business Acumen:** Ability to connect technical metrics (RMSE, R²) with business metrics (Margin, EBITDA, CAC). ***It’s a plus if you have:*** * Prior experience in Retail, E-commerce, or Growth-focused Startups. * Knowledge of Google Analytics 4 (GA4) and export to BigQuery. * Familiarity with Machine Learning (Scikit-Learn) applied to business contexts. **Additional Information** **Benefits:** * Medical insurance * Dental insurance * Meal allowance & Food allowance * Transportation voucher * Profit Sharing and Results Program * Product discount * Life insurance * Wellhub and Totalpass partnership—gym network **What else will you find here?** * Birthday day off * Remote work (Hybrid work model) * Remote work allowance **So, are you ready to join us? Come and have fun.** (Our initial communication is via email. Didn’t receive the email? Please check your Spam/Junk folder.) Have you ever imagined bringing smiles to thousands of families across Brazil? We are **Brazil’s largest toy retail group**, with **over 300 stores**, including franchises and company-operated locations, **impacting millions of families every year.** We are an ecosystem of complementary businesses delivering unique experiences for children, families, and everyone who helps build this story with us. But our true scale isn’t only reflected in numbers. Our culture is what makes us special—and it’s built upon five core values we call SUPER. They form the foundation of who we are and how we act. With these values, we are who we are—and deeply passionate about what we do. With nearly 3,000 voices, talents, and stories connected by a shared purpose, **we transform the world through play.** After all, at the Ri Happy Group, fun is taken seriously—because we believe that working with lightness, collaboration, and creativity creates space for each person to shine and develop their best qualities. A place where you can be who you are today—and become who you want to be tomorrow. All this makes us recognized as a **Great Place to Work**, an acknowledgment reflecting an environment where growth, development, and pride in the journey being built are possible. After all, magic happens from the inside out! **So, does this match what you’re looking for in your future?** **\#JoinTheSUPER**