Jisung Choi Email & Phone Number

San Francisco, Ca, Us

- Deployed and maintained a horizontally auto-scalable AWS cloud server for a multiplayer game, effectively servicing 20,000+ users and accumulating 5M+ social media views.- Streamlined user experience by implementing Google OAuth for user authentication and authorization, facilitating easier login and access to services while reducing friction; leading to 27% of users validating through the new method after the rollout.- Enhanced data security by implementing exchange between Google… Show more - Deployed and maintained a horizontally auto-scalable AWS cloud server for a multiplayer game, effectively servicing 20,000+ users and accumulating 5M+ social media views.- Streamlined user experience by implementing Google OAuth for user authentication and authorization, facilitating easier login and access to services while reducing friction; leading to 27% of users validating through the new method after the rollout.- Enhanced data security by implementing exchange between Google access tokens and AWS IAM Role, ensuring authorized access to AWS resources such as API Gateway, Lambda, and DynamoDB, thereby protecting sensitive information and ensuring compliance with security best practices.- Identified and resolved a critical faulty server restart by implementing server-side network polling, reducing daily maintenance by 8 developer-hours and cutting operational costs by 77%, significantly improving team productivity.- Streamlined API calls for the multiplayer game lobby connection system leveraging AWS API Gateway and Lambda, enhancing security and ensuring scalability.- Developed a Key Generation Service (KGS) for game lobby management using AWS Lambda and DynamoDB; pre-generated five-letter keys with TTL for reuse, ensuring key uniqueness and optimizing key retrieval time.- Utilized Docker image containerization for server builds, significantly reducing the risk of vendor lock-in and operational costs by 43%.- Leveraged AWS Elastic Kubernetes Service(EKS) to monitor server health and enable horizontal auto-scaling, effectively preventing overloads during high-traffic events and maintaining a seamless user experience. Show less

San Jose, California, United States