Junior Data Scientist (AI/ML)

Навыки

• Data Quality
• GitHub
• Обучаемость
• Machine Learning
• Ответственность за результат
• Python
• PyTorch

О компании и продукте

• Care to change the world - We are passionate about our work and care deeply about its impact to be life changing.
• We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.
• Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.
• Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.

Задачи

• Building ML solutions that enable a remarkable user experience in the Preply marketplace
• Contributing to data pipelines that power the team’s ranking and matching models, with support from senior engineers
• Building and improving offline evaluation tooling and data quality checks
• Analyzing experiment results to help the team understand model performance and guide future iterations
• Owning well-scoped components of larger AI projects, with close guidance from senior teammates
• WE POWER PEOPLE’S PROGRESS
• At Preply, we’re all about creating life-changing learning experiences
• You will have ownership of high-impact, well-scoped work — such as feature engineering, data pipelines, offline evaluation tooling, and experiment analysis — while receiving close mentorship from experienced ICs
• Please note: This role is open to candidates based in Ukraine. You can work from our Kyiv hub or remotely from anywhere in Ukraine

Требования

• Strong understanding of machine learning fundamentals
• Hands-on machine learning experience through internships, research, personal projects, or industry work
• Experience with Python, Pytorch and Github
• Curiosity, a growth mindset, and the ability to learn quickly from feedback
• Familiar with AI tools to improve productivity and learning
• English proficiency at B2 level or above

Условия

• An open, collaborative, dynamic and diverse culture
• A generous monthly allowance for lessons on http://preply.com/Preply.com http://Preply.com, Learning & Development budget and time off for your self-development
• A competitive financial package with equity, leave allowance and health insurance
• Access to free mental health support platforms
• The opportunity to shape the lives of learners and tutors through language learning and teaching in 175 countries (and counting!)
• We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning
• Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started
• As a category-defining company, we’re shaping what the future of learning looks like at global scale
• Every Preply lesson sparks change, fuels ambition, and drives progress that matters
• Joining Preply means helping define the future of education at global scale, and building something that truly matters for millions of people, every day
• Meet the team!
• At Preply, AI isn't a feature — it's foundational
• It powers how we connect millions of learners and tutors, personalize every interaction, and build a marketplace where meaningful learning thrives at global scale
• The Applied AI team sits at the center of this ecosystem
• We design and deploy intelligent systems that drive real-time tutor–learner matchmaking across millions of sessions worldwide
• Over time, we've evolved from traditional machine learning approaches into a modern AI-native marketplace — leveraging deep learning, advanced ranking and re-ranking architectures, and proprietary multimodal data including audio, video, and transcripts to deliver smarter recommendations and measurable learning outcomes
• As a Junior Data Scientist, you’ll join the AI Marketplace team

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