Staff Data Scientist - Paid Marketing Optimization

• Design our

• Own, design and develop our Creative Analytics Framework. Drive its findings into decisions with the creative and media-buying teams, and automate detection, reporting and action with MarTech. Longer term, build models that separate what a creative actually causes from what the algorithm's delivery decides for it, so we can predict the incremental drivers of creative efficiency.

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Create customer uplift models to identify incremental value and build audiences that improve marketing efficiency. Tell the networks who to look for and who to skip, and feed that back as prospecting seeds, remarketing audiences and exclusion lists.

• Work closely with the Data Engineering and Applied AI team on scalable data pipelines, the evolution of our ETL processes, and the adoption of new tools and frameworks.

• Python, SQL and a distributed framework like Spark; we use Databricks.

• Experience with marketing or attribution data, and a working understanding of how

Separating what a channel drives from what it takes credit for, and designing the test that settles it when the platform controls delivery.

• The instinct to turn a business hypothesis into something testable, and the honesty to say when the data can't answer it.

• Comfort working across teams you don't control. This role runs on close collaboration with Applied AI, marketing measurement, MarTech and tracking, and CRM.

You might come from marketing DS, ads ML, recommender systems or any applied ML role where your model's output fed another algorithm.

• An open, collaborative, dynamic and diverse culture;

• A generous monthly allowance for lessons on Preply.com , 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 Hub

• Access 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!).

• We are passionate about our work and care deeply about its impact to be life changing.

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• 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 experience.

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• To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.

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• In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.

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• What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.

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• We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.

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• We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. We humbly embrace feedback and learn from setbacks.

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• We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.

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• 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 made.

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• We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other's progress.