- Utilized clustering techniques to analyze call behavior data and identify high-impact user segments for strategic collaboration with product teams, resulting in increased usage uplift.- Developed predictive models using diverse in-app behavior data to identify potential ringback tone purchasers, thereby optimizing targeted marketing efforts. - Advised on A/B testing to optimize Zalo features, including evaluating campaign success and testing model outcomes for performance enhancement.- Engineered an automated EDA tool for efficient insight generation from large datasets, enhancing productivity and scalability.

- Spearheaded the development of reporting systems, automating weekly, monthly, and quarterly reports, resulting in a threefold reduction in manual processing time.- Developed and maintained A/B testing platforms, enabling data-driven decision-making processes and optimization of product features.- Provided training to junior analysts on R Shiny, Airflow, Spark, etc. Empowering them to contribute effectively to data pipeline development.- Designed and implemented data pipelines from diverse sources, including raw text file logs and big data systems, ensuring data integrity and reliability.- Collaborated with DE team in the development of BI tools using open-source Superset, and conducted training sessions for product teams on query platforms and BI tools.

- Monitored key metrics in Zalo app, including user engagement, retention, and conversion rates.- Utilized R language, SQL queries, and data visualization tools to extract and analyze data from multiple sources.- Developed and maintained dashboards to track KPIs and provide real-time insights to Product teams.- Conducted ad-hoc analysis to identify trends, patterns, and anomalies in user behavior.- Collaborated with cross-functional teams to understand business requirements and deliver data-driven solutions.- Generated comprehensive reports and presentations to communicate findings and recommendations to management.

- Analyzed business processes and requirements to contribute to the development of Lemon3, an ERP software designed for medium and large enterprises.- Collaborated with the development team to translate business requirements into functional specifications and solution - documents, ensuring alignment with client expectations and project objectives.- Utilized tools such as Crystal Report for generating reports and Visio for designing user interfaces.- Developed and maintained stored procedures and SQL queries.