● Manage 7 members including data analysts, data scientists and digital marketing specialists, transforming them into tech-driven marketing team with designing data pipeline architectures and conducting training sessions. ● Effectively engage with diverse stakeholders, including directors, executives, and ad publishers, to align marketing strategies with business objectives. ● Build company’s new marketing strategy with more detailed-analysis of high LTV customer’s behavior, leading discussion with executives. ● Execute comprehensive data strategy with DBT ensuring data quality and enhancing reliability of marketing operations.

● Lead 5+ team members and collaborate with engineers and data scientists for transforming insights into improvement of marketing performance. ● Increase user registration from channel by 20% by implementing machine learning model and predicting advertising performance. ● Forecast sales of whole company both daily and yearly and provide CMO and CEO with insights. ● Proposed new cost allocation plans on entire marketing channel by estimating customer lifetime value. ● Lead discussion with marketing teams on associated companies in USA, UK, Korea and India.

● Improved advertising performance by analyzing billions of rows of data by SQL. ● Calculated lifts of non-RCT advertising test by causal Impact package. ● Created large data marts for customer analysis which are used by whole company. ● Implemented fully automated reporting pipelines together with engineers by reorganizing unstructured 1000+ rows of queries.