I am a full-stack software development engineer at Amazon. For front-end, I am familiar with JavaScript, TypeScript, React and React Native. For back-end, my daily job involved system design, RESTful API design, NoSQL database design and big data job optimization (Spark). Especially, I have tons of experience in Amazon Web Services like: Lambda (Serverless), Elastic MapReduce, S3 and EC2
1. Deployed and optimized a machine learning model training process, which is hosted on AWS Elastic MapReduce utilize Spark. Decreased the training time from 5 days to 2 days. Saved 40% of budget for our team.
2. Design and implemented a internal team management mobile tool for teams in amazon company-wide, with React Native for Mobile side, and AWS API Gateway, AWS Lambda, SNS as system backend.