◦ Designed, developed and implemented the Learning Resource Management System to provide multiple learning resource service for students, such as cloud-based Online QA Platform, based on Java Spring and React (Spring, React)

◦ Developed and implemented templates and features of all webpages of the Learning Resource Management System using TypeScript and JavaScript (TypeScript, JavaScript)

◦ Implemented personalized recommendation content-based and user-based on student search history and favorite records which keeping users sticky

◦ Improved the Alternative Least Square (ALS) algorithm to provide personalized recommendations, and fine-tuned model hyperparameters with Spark ML cross-evaluation toolbox to enhance prediction accuracy from 79% to 82%

◦ Designed and developed the micro-service of merchant payment system based on Java, which enables the company to charge merchants monthly fees, and uses gRPC to build it to ensure high availability and performence of the system (Java, gRPC)

◦ Based on Kafka as a producer and consumer, to ensure high throughput processing of messages, and to persist messages for use by other services at the same time, use Google Cloud Big Data as a database to ensure efficient data reading (Kakfa, GCP)

◦ Used PHP language to develop automated beta environment testing tools to ensure the availability of merchant payment functions (PHP)

◦ Operated and managed service health with centralized monitoring and logging service ElasticSearch

• Developed and maintained scalable and innovative external security hub service, which gives 109k customer accounts comprehensive view of customer’s security alerts and security posture across

• Built and launched rich customer facing user interfaces with distributed backend systems and serverless architecture, which could able to meet the needs of complex enterprise users (Typescripts, Node.js, React, Redux)

• Designed and implemented a backward compatible security controls view that supporting user generated findings per control, which increased the on-boarding number of active enterprise users by 11%

• Implemented batch operation API with AWS Lambda, Amazon API Gateway and Amazon Kinesis, which make team service to be more user friendly

• Designed and created an automated injection service that convert the controls configuration from JSON format to Amazon DynamoDB, which reduce the team manually operating costs

• Operated and managed service health with centralized monitoring and logging service Amazon CloudWatch

1. Designed and developed the Software Development Kit of Compute Engine in cloud computing network using Java to meet the requirements of our customer company to reduce its operating costs by 5%

2. Designed, built and maintained Kingsoft Cloud Platform’s server side with Java Spring MVC frame to handle user function which increase company customer base by 12%

3. Implemented company online purchase micro-services based on Spring Web Flow to support item ordering, utilized Hibernate to provide better support of database operations

4、Developed security workflow via in-memory and JDBC authentication provided by Spring Security