Junior Data Scientist (AI/ML)

Kyiv🌐 Remote💼 Full-time🗓 2026-08-03 → 2026-09-25

Core

Building ML solutions and data pipelines to power real-time tutor-learner matchmaking, ranking, and matching models in a global language learning marketplace.

Role type

Junior IC data scientist (AI/ML)

Builds

Intelligent systems for tutor-learner matchmaking, ranking models, and marketplace integrity tools

Domain

Ed-Tech / AI Marketplace

Deliverable

production ML models

Required skills

machine learning fundamentals, Python, PyTorch, data pipeline development, offline evaluation tooling, experiment analysis

Preferred skills

experience with AI tools for productivity

Technologies

PyTorch, Python, Github

Responsibilities

Build ML solutions for user experience; contribute to data pipelines for ranking and matching models; build and improve offline evaluation tooling; analyze experiment results; own well-scoped components of larger AI projects

Seniority

Junior, hands-on IC with mentorship

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About Preply

Technology, Information and Internet18057Brookline, Massachusetts, USFounded 2012

We power people’s progress. At Preply, we’re creating life-changing learning experiences by pairing the magic of human tutors with the power of AI. We help learners discover the perfect tutor, craft a personalized learning journey, and stay motivated to keep growing – wherever they are in the world. With a global network of 100,000+ tutors teaching 90+ languages across 180 countries, Preply is shaping the future of learning. Backed by $150M in Series D funding, we’ve reached unicorn status and are scaling fast – all while staying grounded in our mission to make learning more personal, powerful