As Senior Principal Applied AI Scientist, you will spearhead AI-driven personalized learning solutions and shape Preply’s scientific roadmap. You’ll architect state-of-the-art models with a world-class team to enhance learning experiences for millions of users. You’ll set long-term research directions aligned with product goals and advise leadership on technology decisions. This role combines autonomy, cross-functional influence, and the chance to push the boundaries of AI in education, at integral scale. * monthly allowance for lessons on Preply.com * time off for self-development * equity and health insurance * free mental health support platforms * competitive financial package with leave allowance * Design and deploy scalable ML solutions for personalized learning and intelligent tutor systems using deep learning, NLP, IR, LLMs, and multimodal AI * Develop long-term scientific roadmaps aligned with product strategy and business goals * Collaborate with applied science, product,



and engineering teams to translate research into products that unlock new opportunities * Mentor scientists and engineers, fostering a collaborative, innovative science community * Establish and promote ML best practices across architecture, roadmaps, and deployment pipelines * PhD in NLP, IR, ML or related fields (or equivalent experience) * 8+ years of industry experience with deep learning-based NLP, LLM pre-training, and IR methods * Expertise in retrieval models and ranking models * Experience with retrieval-augmented generation (RAG) and LLMs in real-world applications * Proficiency with PyTorch * Hands-on experience with cloud platforms (AWS, Google Cloud) * Proven ability to lead scientific roadmaps across product areas and collaborate with Product and Engineering * Track record of solving real-world problems across research to production * strong collaboration and cross-functional teamwork * leadership and mentorship * strategic advisory capabilities to senior leadership * PyTorch

📌 Senior Principal Applied Ai Scientist (Cataluña)
🏢 Preply
📍 Cataluña