Senior Data Scientist - Marketing en Barcelona, España

We power people’s https://jobeax.com/link/axGcNe4KYjMsVGK7 Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global https://jobeax.com/link/E5oZQxatJ6Yyhwwb Preply lesson sparks change, fuels ambition, and drives progress that matters. Joining Preply means helping define the future of education at global scale, and building something that truly matters for millions of people, every https://jobeax.com/link/7yGyTN3eunwjMZSD the teamAt Preply, we're growing a talented Data Team to empower top-notch decision-making across our organization. Our team collaborates closely with various other chapters - including product, business, and platform - leveraging analysis, experimentation, causal inference, and machine learning.You’ll be embedded in cross-functional teams, partnering with our MarTech Product Manager, Marketeers, Tech Leads, and the Data Strategy team. Check out our Tech Radar to see the tools and technologies we love using at Preply!What you’ll be doingCollaborate with performance marketing teams in coming up with data solutions to support the optimization of marketing campaigns, budgets and results;Roll out Marketing Mix Modeling (MMM) to more countries and help build an automated MMM budget platform using advanced Bayesian statistics;Design and analyze incrementality tests to measure marketing effectiveness, applying advanced methods like causal inference to quantify incremental ROI;Design a unified system that connects the dots between MMM and incrementality results;Shape the testing roadmap;Design our Creative Analytics framework, developing new metrics such as creative fatigue to help scale new channels;Improve targeting and bidding strategies by using regression models to assign predictive weights to funnel events;Act as a sparring partner to our Applied AI team: support the roll-out of models, analyze their impact, understand feature importance, and bring both business and data science knowledge to guide these projects;Work closely with the Data Engineering team in the creation of scalable data pipelines while guaranteeing an optimal evolution of our ETL processes, as well as the adoption of new tools and frameworks;Contribute to cross-company initiatives in alignment with our data organization's vision;Support proactively the application of predictive models in performance marketing https://jobeax.com/link/PvlELJlvhinWXdWF you need to succeedAn AI mindset: you use AI to boost your efficiency, love working agentically, automate processes, and enable your stakeholders with AI;A pragmatic problem-solver at heart: you dig into complexity to find the simplest, most elegant path through it, guided by curiosity rather than a love of complicated models;Extensive experience as a Data Scientist working with performance marketing teams in a B2C environment, delivering business insights and building data products;Knowledge of incrementality and attribution;Skilled in developing and deploying machine learning models;Experience with experimentation (design and evaluation of A/B tests);Experience working in Marketplaces and/or digital business environments, in the context of performance marketing;Strong coding skills in SQL and Python;Creative mindset and proactive attitude towards the creation and evaluation of new solutions;Strong curiosity, problem solving and problem finding skills;Advanced written and verbal communication skills in https://jobeax.com/link/nlu4OcQlmPFSMp4l to havePrevious experience with causal inference techniques (e.g. geo-lift testing, causal impact, synthetic control, difference in differences, etc.)Previous experience with Databricks, Snowflake, Looker;Previous experience with Apache Spark,Knowledge of data orchestration tools (e.g. dbt and Airflow).Why you’ll love it at PreplyAn open, collaborative, dynamic and diverse culture;A generous monthly allowance for lessons https://jobeax.com/link/3yEVKf7wPvGgGTGq, Learning & Development budget and time off for your self-development;A competitive financial package with equity, leave allowance and health insurance;Not in Barcelona? We offer an attractive relocation package to join us in our Preply Barcelona HubAccess to free mental health support platforms;Access to Gympass-partnered wellness and gym centers throughout Spain to promote and support well-being and physical health;The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!).#LI-AG1Our PrinciplesCare to change the world - We are passionate about our work and care deeply about its impact to be life https://jobeax.com/link/BY2JQ3Wu7F6deyhU do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning https://jobeax.com/link/ZIlVfMn2HWbYJpQE perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail https://jobeax.com/link/4h8lQ5RTvnAcCMJ9 is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things https://jobeax.com/link/7dGq9JG7dkIaBh59 execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources https://jobeax.com/link/UR3DaVU9J6t6y7LN deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our https://jobeax.com/link/PnuMrKIdvmotMiwW mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from https://jobeax.com/link/ZQpAUhRuoVllaKMP the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real https://jobeax.com/link/C5X7GX6kjCYJYQ1b, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once https://jobeax.com/link/vk5CBmbgP9RCWyi7 Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's https://jobeax.com/link/6JXr5O2JsexAXCCq, Equity, and https://jobeax.com/link/rS6MIeRnecx8c3X4 is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran https://jobeax.com/link/f3F2etyJwU9NWekt TypeFull timeLocation TypeHybridDepartmentData