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
Cloud Platforms Experience
ATS Optimization Keywor

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