Senior Applied AI Scientist Location : Barcelona, Spain

At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalized learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact. So far, 90,000 tutors have delivered over 20 million lessons to learners in more than 175 countries. Every Preply lesson sparks change, fuels ambition, and drives progress that matters.

Meet the team!

As a Senior AI Scientist, you will lead the development of AI-driven personalized learning solutions and shape Preply's scientific roadmap. Working alongside exceptional scientists and engineers, you will architect state-of-the-art models and systems that enhance the experiences of millions of learners worldwide.

What you’ll be doing :

• Innovative R&D : Leverage your extensive experience in Deep learning, NLP, Information Retrieval (IR), LLMs and multimodal AI to design and deploy scalable machine learning solutions for personalized learning and intelligent tutor systems.
• Scientific leadership : Develop long-term scientific roadmaps, aligning them with Preply’s product strategy and business goals. Act as a strategic advisor to senior leadership on investments, technology direction, and organizational planning.
• Cross-functional collaboration : Partner closely with applied science leaders, product managers, and engineering teams to deliver AI solutions that address user needs and unlock new business opportunities.
• Mentorship & knowledge sharing : Guide and mentor scientists and engineers, fostering a collaborative and innovative science community within Preply.
• Drive best practices : Establish and advocate for best practices in machine learning, including architecture design, research roadmaps, and deployment pipelines.

What you need to succeed :

PhD in NLP, IR, Machine Learning, or related fields (or equivalent experience).

Demonstrated authority in retrieval models and extensive experience with ranking models.

Proven ability to lead scientific roadmaps across multiple product areas, aligning them with business objectives and a strong publication record in top-tier venues.

A passion for driving scientific innovation to enhance personalized learning experiences.

Why you’ll love it at Preply :

Diversity, Equity, and Inclusion

Preply is committed to creating a diverse and inclusive environment where people from all backgrounds can thrive. Different opinions and viewpoints are key ingredients in our success as a multicultural Ed-Tech company.

Preply will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status. Together, we are The World Class.

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