Senior Data Scientist

Responsibilities :

• Set up tailor made large scale survey design,  implement and improve sampling and weighting methodologies, establish and improve questionnaire design.
• Create universe estimation from survey database and / or third party data.
• Design, implement and  improve methodologies, including multivariable statistical models are applied for :
• Data validation and quality control to ensure data quality standards are achieved
• Complex trend analyses of linear and nonlinear viewing.
• Viewing behavior analysis to detect any abnormality on the trends.
• Checking extreme viewers to verify the consistency of the behavioral trend.
• Panel behavior analysis to detect any abnormality on the trends.
• Recommending design and analyzing the outcome of pilot projects for operational process improvement.
• Ensure methodologies are fit for purpose and working as intended; troubleshoot, diagnose, and resolve when they are not.
• Coding for
• Deploy and maintain scalable, reusable/modular data procedures, and models for analytical, or reporting purposes. 
• Automatize regular analyses and data procedures.
• Develop, implement and maintain good programming standards and practices across our data science and analytics codebases.
• Communicate research findings
• Present to varying audiences, internal and external clients
• Data visualization, including building dashboards
• Create methodological, product and process documentation
• Work with cross-functional teams to productionize, validate, analyze and/or optimize methodologies

Skills :

• Bachelor’s or Master’s degree in a quantitative research field, such as computer science, data science, statistics, mathematics, biological/physical sciences, economics, social science.
• Outstanding statistical and analytical skills
• 4+ years research and code development experience in a business setting.
• Strong proficiency with Python and R / SPSS.
• Java, Spark, SQL, Unix, git, and AWS (S3 and EC2) + Machine learning fundamentals are advantage.
• Collaborative code development experience, including version control, unit/integration testing, code review and sharing is advantage.
• Language skills: Polish and English full professional proficiency. Ukrainian would be an advantage.
• Excellent verbal and written communication skills. Excellent debugging skills
• Cooperative and supportive attitude. Curiosity and skepticism. Detailed and precise workload management.
• Transparency, honesty, including problem communication