Xin Du's Email Addresses & Phone Numbers

📖 Summary

Software Engineer @ Unity Global Corp From July 2016 to September 2016 (3 months) Seattle, WashingtonSoftware Engineer @ Amazon Web Services (AWS) New Amazon Quarantine Controller System (AQCS) - AQCS runs on all Amazon hosts which mainly responsible for quarantining hosts that are not compliant with Amazon security policy with velocity control.• Built a new web service for Amazon Quarantine System from client side to server side using RESTful API. (Restful API, EC2, RDS)• Implemented a velocity control mechanism based on quarantine requests speed and threshold to ensures the quarantine system doesn't malfunction in such a way as to interrupt business function across the fleet.Amazon Client Management Engine (ACME) - ACME runs on desktop platforms to ensure employees’ machines are complaint with Amazon security policy. This includes active system patching, maintenance, system isolation when there is a security concern. EC2, VPC, ALB, Kinesis, RDS, S3, IAM, KMS• In-charged maintaining, planning, designing, implementing new features on client-side software runs on all amazon internal management systems.• Worked on processing, persisting data to RDS and aggregated data to generate client metrics for analysis. From October 2016 to June 2018 (1 year 9 months) Greater Seattle AreaSoftware Engineer Intern @ China Unicom Database & Linux Intern - National Level Online Education Broadcasting Center• Developed a public online education platform for content providers to broadcast videos and for users to watch and study.• Configured the environment and installed Oracle 11.2, Sqldeveloper on Linux system using commands.• Designed requirement analysis, ER diagram, tables in principle of three normalizations and inserted tables to Oracle by SQL.• Configured vncserver on Linux and built remote connection service between Windows and Linux.• Mastered theory of network and communication such as router, switch, NAT, DNS, ISPF, FTP at the enterprise level.commands.• Designed requirement analysis, ER diagram, tables in principle of three normalizations and inserted tables to Oracle by SQL.• Configured vncserver on Linux and built remote connection service between Windows and Linux.• Mastered theory of network and communication such as router, switch, NAT, DNS, ISPF, FTP at the enterprise level. From May 2015 to August 2015 (4 months) Beijing, ChinaSoftware Engineer @ Amazon Web Services (AWS) Amazon Chime Phone Number Porting System• Designed and developed a serverless phone number porting system from end to end using AWS(API Gateway, Lambda, EC2, SQS, Step Function, CloudFormation, DynamoDB, CloudWatch, IAM, SecretsManager, AngularJS), expediting the process of porting in customers’ numbers to Chime from 1 week to a few minutes.• Implemented RESTful APIs like submitting, searching, listing, updating, canceling porting orders and provided all these features on Chime console.• Automated porting order status update with Email notification using a pulling-based model interacting with carriers’ API by using Step Function and lambda Function. From July 2019 to June 2020 (1 year) Greater Seattle AreaSoftware Engineer @ Amazon Web Services (AWS) Amazon Chime Feature Flag Service - Feature service provides feature flags for new features as a result of the evaluation to support all Chime clients rollouts through different stages & versions in web or mobile applications.• Involved in design, development, test of the Feature Service using AWS services(EC2, VPC, ALB, IAM, CloudFormation, API Gateway, SQS, DynamoDB, CloudFront, Route53, CloudWatch) from end to end and built the CI/CD pipelines to rapid code deployment. • Developed the whole backend service using Google Guice framework that is consistently handling 130+ TPS, which helped Chime teams deliver 50+ new functionalities to all Chime users rapidly but safely.Amazon Chime Messaging Service-Amazon Chime is a communications service that lets you meet, chat, and place business calls using a single application. • Developed the contact flag on Chime console using React Redux which allows users to see whether or not the users they are talking to is corporate internal or external. From July 2018 to June 2019 (1 year) Greater Seattle AreaSoftware Engineer @ Snap Inc. Ads & Commerce Platform