Senior Applied AI Scientist (AI Marketplace)

About the role

As a Senior Applied AI Scientist on the AI Marketplace team, you will help power Preply’s global learning platform by designing and deploying cutting‑edge multimodal AI models that match learners with tutors. You will work at the intersection of research and production, turning state‑of‑the‑art neural search and ranking techniques into real‑world impact for millions of users.

Key responsibilities

• AI Research & Development: Apply state‑of‑the‑art, multimodal neural search and ranking models to build and optimise scalable machine‑learning solutions for personalised learning and AI tutors.
• Applied Science Execution: Work on cutting‑edge AI models, contributing to research, prototyping, and deployment in production environments.
• Cross‑functional Collaboration: Partner with scientists, engineers, and product teams to deliver AI‑driven solutions that improve learning experiences and business outcomes.
• Mentorship & Knowledge Sharing: Support and mentor junior scientists and engineers, fostering an environment of learning and innovation.
• Best Practices in ML: Contribute to machine‑learning best practices, including model architecture, research methodologies, and deployment pipelines.

Required profile

• PhD in Information Retrieval, NLP, Machine Learning or a related field (or equivalent experience) with 4+ years of industry experience focused on deep‑learning‑based NLP and IR applications.
• Strong proficiency in deep‑learning frameworks such as PyTorch or TensorFlow.
• Hands‑on experience with cloud platforms (e.g., AWS, Google Cloud).
• Ability to drive AI initiatives from research to production in a collaborative environment.
• Strong problem‑solving skills and a track record of building impactful AI solutions.
• Passion for advancing AI‑driven personalised learning experiences.
• Eagerness to work in a fast‑paced, cross‑functional setting to bring AI research into real‑world applications.

Required skills

• PyTorch
• TensorFlow
• AWS
• Google Cloud
• NLP
• Information Retrieval

What we offer

• Open, collaborative, dynamic and diverse culture.
• Generous monthly allowance for lessons on Preply.com, learning & development budget and time off for self‑development.
• Competitive financial package with equity, leave allowance and health insurance.
• Access to free mental‑health support platforms.
• Opportunity to shape the lives of learners and tutors across 175+ countries.