Senior Principal Applied AI Scientist

The role

You will lead the development of AI-driven personalized learning solutions and shape the scientific roadmap. You will architect state-of-the-art models and systems to enhance experiences for millions of learners.

What you will do

• 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.
• Act as a strategic advisor to 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 best practices in machine learning, including architecture design, research roadmaps, and deployment pipelines.

Required qualifications

• PhD in NLP, IR, Machine Learning, or related fields (or equivalent experience).
• 8+ years of industry experience, with a strong focus on deep learning-based NLP, LLM continuous pre-training, and IR methods.
• Demonstrated expertise in retrieval models and 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 (e.g., AWS, 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.
• Strong collaboration skills.

Nice to have

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

Benefits

• An open, collaborative, dynamic and diverse culture
• A generous monthly allowance for lessons on Preply.com
• Learning & Development budget
• Time off for your self-development
• A competitive financial package with equity
• Leave allowance
• Health insurance
• Access to free mental health support platforms

About the company

Preply is a category-defining company that helps people discover tutors and craft personalized learning journeys. They have reached unicorn status with a $150M Series D.