David Xing Email & Phone Number

Los Gatos, Ca, Us

Seattle, Wa, Us

Developed and maintained highly scalable backend services that handles over 20,000,000 clients' requests per second which are mission critical to customer shopping experience using Java, Spring, Coral, DynamoDB, S3, SNS, SQS and APIGatewayDesigned scaling algorithm and strategies for Shephard to reduce complex query process time up to 100 times fasterTook ownership of Shephard(a tier 1 service) over and brought team up to speed on service architecture, code base, COEs and testingConducted cost analysis on Shephard and created cost reduction plan with potential savings up to 50% on AWSWritten comprehensive Wiki documents on Shephard used by 50+ teams across the organization

Toronto, Ontario, Ca

Delivering Document AI through API and Custom Field Training Tool Designed highly scalable system DocAI that processes 1000+ documents per request with micro-service architecture orchestrated with Kafka, developed DocAI with Golang, Kubernetes, Istio and PostgresSQLApplied SOC 2 compliant requirements to ensure the privacy of clients dataDesigned and developed custom authorization service from end to end for DocAI with usage provisioning for thousands of usersIntegrated Azure Keyvault with DocAI for services initialization on multicluster environment

Toronto, Ontario, Ca

Developed and improved features for WorkBench using Closure and ClosureScriptDesigned and developed reusable UI components for KUI in ClosureScript

Toronto, Ontario, Ca

Developed multiple smart hospital applications with patient privacy features, regional data privacy, and HIPAA compliantManaged developer team, business analysis team, and dev-ops team on smart building service upgrade project achieved 1 week's deadlineDesigned AWS RESTful service layer to support @WorkApp using Lambda, API Gateway, DynamoDB, and Simple Notification ServiceDeveloped IoT layer with IoT Core allowing Cloud Service Layer to communicate with smart buildingsCreated automated deployment of AWS infrastructure with python and CloudFormation

Toronto, Ontario, Ca

Developed enhancements to ThoughtWire Ambient platform front-end framework to boost performance and expand capabilities using JavascriptIntegrated OpenLayers 3 with Ambient Platform used for Smart Building displays for building status, floor plans and various device locationsDeveloped eWhiteboard, Early Warning System and Online Checkin/Registration using ThoughtWire Ambient PlatformDesigned and developed replay tool to recover from catastrophic system failure to restore application from audit logsDesigned and Developed self-provisioning tool for Online Checkin/Registration

Toronto, Ontario, Ca

Enhanced problem-solving abilities by teaching tutorial section for Introduction to Computer ScienceDeveloped strong communication skills by lecturing a group of 30 students weekly and maintaining contact with professor of the course via e-mailTime management skills were strengthened by planning a schedule to grade assignments and tests, conducting office hours weekly and preparing for tutorials

Toronto, Ontario, Ca

Designed and developed responsive job board website using WordPress APIs integrating with CareerLeaf WordPress pluginDeveloped both frontend and backend enhancements and fixes for multiple job board website using JavaScript, Python and PHPDeveloped custom email alert system capable of scheduling mass email blast using Amazon Simple Mail ServiceIntegrated Piwik Analytics with job board products to track site visitors and job application submissions

Designed and developed web application for mobile paint estimator compatible across iOS, Android and BlackBerry platformDeveloped well designed Skills Management Information System(Skill MIS) using advanced HTML and CSS3Deployed administrative platform for Skill MIS with heavy use of PHP and MySQLCreated landing pages from image templates using Photoshop, HTML and CSS

Toronto, On, Ca

Commended for excellent communication and inter personal skills, as well as a quick learner and adaptation to new technologyDeveloped enhancements and fixes to a Web based application for document management and messaging systemPerformed detailed quality assurance on large scale client side applicationDeveloped well designed unit test for server side APIsDeveloped expertise in the use of JIRA issue tracking systemTrained Co-op students on setup and use of Git version control to ensure correct synchronization of application progress.

Toronto, Ontario, Ca

Developed International Student Centre’s website utilizing WordPress including PHP and CSS custom code on templates and widgetsDesigned and developed an Orientation sign-up database by efficiently utilizing PHP and MySQLCommunicated strategies and ideas for implementation of WordPress to allow efficient migration of informationTrained office staff with no experience with WordPress CMS to use CMS thereby allowing staff to easily and freely update/maintain website

Developed Sir John A. Macdonald CI’s website using HTML, CSS, PHP and MySQLOrganized bi-weekly meetings to check progress for development and discuss ideas and algorithms for internal components of website, for example, calendar and newsLead a team of four to design and develop administrative maintenance software using PHP, MySQL and CSSMonitored and analyzed two sample models and wrote reports regarding software and hardware functionalities, ultimately helping TDSB’s selection of the DELL Optiplex 780 system

Certificate, Enterprise Architecture

Education record