Responsibilities * Lead development of AI-driven personalized learning solutions and shape Preply's scientific roadmap * Design and deploy scalable machine learning solutions for personalized learning and intelligent tutor systems * Develop long-term scientific roadmaps aligned with product strategy and business goals * Advise senior leadership on investments, technology direction, and organizational planning * Partner with applied science leaders, product managers, and engineering teams to deliver AI solutions * Guide and mentor scientists and engineers * Establish and advocate for machine learning best practices, including architecture design, research roadmaps, and deployment pipelines * Report directly to the VP of Data and Applied AI Requirements * PhD in NLP, IR, Machine Learning, or related fields (or equivalent experience) * 8+ years of industry experience * Strong focus on deep learning-based NLP, LLM continuous pre-training,



and IR methods * Demonstrated expertise in retrieval models * Extensive experience with ranking models * Strong understanding and experience with retrieval-augmented generation (RAG) and LLMs for real-world applications * Proficiency in deep learning frameworks such as PyTorch * Hands-on experience with cloud platforms such as AWS or Google Cloud * Proven ability to lead scientific roadmaps across multiple product areas * Track record of solving real-world problems throughout the entire product lifecycle, from research to production * Passion for scientific innovation in personalized learning * Ability to work cross-functionally with diverse teams Core Competencies Demonstrates expertise in developing AI-driven personalized learning solutions, with a strong focus on deep learning-based NLP and LLMs. Proven ability to lead scientific roadmaps and collaborate cross-functionally to deliver innovative AI solutions. Highest-signal resume keywords * PhD In NLP * Deep Learning-Based NLP * Machine Learning Solutions * Proficiency In PyTorch *

📌 Senior Principal Applied AI Scientist (Cataluña)
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📍 Cataluña