We are a fast-growing, Barcelona-founded advertising technology company specializing in mobile programmatic advertising and advanced machine learning. We operate one of Europe’s largest demand-side platforms, with revenue above 100M USD and sustained growth over 40% year over year.
Our mission is to continuously improve our ad-tech platform so clients can achieve their campaign goals while giving our team meaningful, impact-driven work in real-world engineering and data analysis.
You will:
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Help define and build core algorithmic and architectural components, especially deep learning models.
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Propose and develop new models, evaluate performance, and iterate on algorithms in a role that combines “ML Scientist” and “Data Engineer” responsibilities.
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Design, implement, and deploy scalable data analytics and machine learning solutions, working closely with technical and operations teams.
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Tackle unique modeling challenges such as extreme label sparsity and long label delays.
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Analyze multiple data sources and deliver actionable insights to technical and business stakeholders.
You must have:
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Strong coding skills in at least one of: Python, Scala, or Java.
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Experience with modern version-control tools.
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Background in machine learning and predictive modeling (deep neural networks, logistic regression, clustering, time series and auto-regressive models).
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Knowledge of advanced statistics (regression, distributions, significance testing).
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Experience with SQL and data warehousing.
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A problem-solving mindset, proactivity, independence, and accountability.
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Strong organizational skills and ability to multitask in a results-oriented environment.
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Excellent written and verbal communication in English.
Nice to have:
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Master’s degree in a quantitative or AI-related field.
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Experience building and deploying high-performance production algorithms.
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Familiarity with transformer architectures and large language models.
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Experience with data visualization or notebook/reporting tools.
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Background in digital marketing or user acquisition.
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Experience with distributed data processing and modern backend technologies.
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Familiarity with major cloud providers and common analytics/data services.
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Comfort working in Linux environments.
We offer:
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A motivated, international team in a central Barcelona office with a rooftop terrace and hybrid work (3 days in office, 2 remote).
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Competitive compensation, private health insurance, and meal and gym allowances.
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Access to online learning platforms and regular social and team-building events.
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A fun, collaborative environment with colleagues from over 40 nationalities.
