Senior Data Scientist

A global, data-driven digital advertising technology company is seeking a Senior Data Scientist to analyze complex datasets, design scalable data pipelines, and develop advanced machine learning models for monetization-related domains at large scale.

• Analyze large, complex datasets to uncover patterns, insights, and business opportunities
• Design, build, and own scalable, end-to-end data pipelines
• Develop and productionize advanced machine learning models and algorithms in monetization domains
• Build and maintain data models for real-time (online) processing
• Contribute to creation of new data-driven products and improve existing ones
• Collaborate with Product, BI, Analytics, DevOps, R&D, and Marketing teams
• Lead full production releases including requirements analysis, testing, monitoring, and rapid issue response

• 6+ years of experience as a Data Scientist with strong foundation in machine learning concepts and models
• Previous experience in Ad-Tech industry
• Hands-on experience with large-scale, high-load systems processing billions of requests per second
• Production-ready Python experience with modern frameworks and tooling
• Experience with data science/ML libraries: regression, classification models (XGBoost, LightGBM), recommendation systems
• Solid understanding of databases and SQL for data analysis and retrieval
• Experience with monitoring tools such as Grafana and Kibana
• Proven experience in real-time/online environments
• Bachelor's or Master's degree in Computer Science, Engineering, Mathematics, Statistics, or related field
• Strong end-to-end ownership mindset
• Fluent English with strong communication and collaboration skills

Plus: Familiarity with programmatic advertising ecosystem (DSPs, SSPs, ad exchanges); Experience with relational databases (Vertica, VoltDB) and non-relational databases (MongoDB); PMML experience

• 5-day working week
• 8-hour working day
• Remote work