Developer on Auto Battles Online, a live mobile game with over 1.5M users◦ Enhanced the leaderboard REST API by generifying the system to support any leaderboard type. Utilized concurrency locks and caches (involving ConcurrentSkipListMaps) to balance scalability and user experience◦ Directed development of the in-game tournament feature which raised user engagement by 12%.◦ Created a power score simulation to quantify the strengths of characters with varying abilities. This was used extensively in balancing the characters and designing level progression.◦ Established a localization and translation system involving the use Google Translate API and ChatGPT to generate, and store translated terms (both in local cache and in database)◦ Implemented a user cohort system to segment the player base to have a number of local leaderboards, thus promoting competitiveness and increasing user spend by over 20%

◦ Established server-side event tracking data pipeline using Google Cloud Platform's BigQuery.◦ Created an internal library to simplify querying and exploring data.◦ Designed and deployed a batch prediction system on Google Cloud Platform that periodically runs a Docker container to query and generate predictions using a machine learning model and uploads the results to MongoDB to be accessed as needed by the server.◦ Conducted experimental projects involving exploration, model testing, validation, deployment, and A/B testing for the following: User churn and retention, Personalized offers, Customer lifetime value, Purchase value prediction, Cheat detection, User clustering◦ Created notebooks and dashboards for data visualization and monitoring of metrics