Experteer Overview
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.

Compensaciones / Incentivos
• 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

Responsabilidades
• 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

Requisitos principales
• monthly allowance for lessons on Preply.com
• Learning u0026 Development budget
• time off for self-development
• equity and health insurance
• free mental health support platforms
• competitive financial package with leave allowance

📌 Senior Principal Applied AI Scientist (Barcelona)
🏢 Preply
📍 Barcelona