data scientist

Enfint

Warszawa

On-site

PLN 240,000 - 360,000

Full time

14 days+

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Job summary

X-FLOW ищет старшего специалиста по данным в составе команды мобильных продуктов. Вы будете руководить инициативами Data Science, направленными на монетизацию рекламы и оптимизацию дохода, сохраняя отличный пользовательский опыт.

Нужно разрабатывать ML-модели для таргетинга, ранжирования, ценообразования и прогнозирования доходов, улучшать рекомендации и персонализацию, анализировать поведение пользователей и показатели рекламы, проектировать и интерпретировать A/B-тесты.

Qualifications

  • 5+ лет опыта в Data Science, предпочтительно в потребительских мобильных продуктах.
  • Доказанный опыт монетизации рекламы, оптимизации доходов или рекламной аналитики.
  • Сильный опыт построения систем рекомендаций, персонализации или ранжирования.
  • Продвинутый уровень Python и SQL.
  • Опыт работы с ML-моделями (классификация, регрессия, ранжирование, прогнозирование).
  • Глубокое понимание методологии экспериментов и статистики.
  • Опыт работы с крупными поведенческими данными.
  • Опыт руководства или наставничества Data Scientists.
  • Умение переводить бизнес-цели в ML-решения с конкретным эффектом.
  • Носитель русского языка.

Responsibilities

  • Возглавлять инициативы Data Science, связанные с монетизацией рекламы.
  • Разрабатывать ML-модели для таргетинга, ранжирования, ценообразования и прогнозирования доходов.
  • Улучшать рекомендации и персонализацию для повышения вовлеченности и LTV.
  • Анализировать поведение пользователей и показатели рекламы для выявления возможностей роста.
  • Проектировать и интерпретировать A/B-тесты и эксперименты.
  • Сотрудничать с PM, инженерами и аналитиками для определения дорожной карты.
  • Наставлять Data Scientists и продвигать лучшие практики.
  • Продвигать масштабируемые ML-решения и качество экспериментов.
  • Едко презентовать инсайты техническим и нетехническим стейкхолдерам.

Skills

Data Science
Advertising monetization
Recommendation systems
Python
SQL
ML models
Experimentation
Statistics
Mentoring
Big data
Leadership
Production ML
Cloud platforms

Job description

Описание: X-FLOW is a mobile game development company established in 2018, known for creating Happy Color, a leading digital coloring book and ad-driven mobile app, with a diverse team spread across the UK, Cyprus, the Netherlands, and other global regions.

Задачи:
  • Lead Data Science initiatives focused on advertising monetization, maximizing revenue while maintaining a great user experience
  • Develop ML models for ad targeting, ranking, pricing, revenue prediction, and monetization optimization
  • Improve recommendation and personalization systems to increase user engagement, retention, and lifetime value
  • Analyze user behavior and advertising performance to identify growth opportunities and drive product decisions
  • Design, analyze, and interpret A/B tests and other experiments
  • Collaborate closely with Product Managers, Engineers, and Analysts to define roadmap and prioritize high-impact initiatives
  • Mentor Data Scientists through technical guidance, code reviews, and best practices
  • Drive the adoption of scalable ML solutions and ensure high standards for experimentation and model quality
  • Present insights and technical solutions clearly to both technical and non-technical stakeholders
Требования:
  • 5+ Years of experience in Data Science, preferably in consumer mobile products
  • Proven experience with advertising monetization, revenue optimization, or advertising analytics
  • Strong experience building recommendation, personalization, or ranking systems
  • Advanced proficiency in Python and SQL
  • Hands-on experience with machine learning models, including classification, regression, ranking, forecasting, and predictive modeling
  • Strong understanding of experimentation methodology and applied statistics
  • Experience working with large-scale behavioral datasets
  • Experience leading or mentoring Data Scientists and driving technical initiatives
  • Ability to translate business goals into ML solutions with measurable impact
  • Native Russian language
  • Nice to have: experience with mobile advertising ecosystems (AdMob, AppLovin, Unity Ads, ironSource, etc)
  • Nice to have: experience with recommendation systems based on embeddings, collaborative filtering, or learning-to-rank
  • Nice to have: experience deploying ML models into production
  • Nice to have: experience with LLMs or GenAI applications
  • Nice to have: experience with MLOps and cloud platforms (AWS, GCP, Azure)
Условия:
  • Competitive salary and benefits package
  • Opportunity to work on high-scale mobile products with millions of users
  • Direct impact on monetization strategy and core product algorithms
  • High level of ownership and autonomy
  • Opportunity to shape the Data Science direction and mentor a growing team
  • Opportunity to work with a talented and passionate team in a creative and dynamic environment
  • Flexible working hours
  • Career growth and professional development opportunities
  • A fun and inclusive company culture that celebrates diversity and creativity
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