* Designed and implemented a PostgreSQL DB high availability architecture, for a client company.* Re-designed and implemented an order/receipt printing job dispatching service, for a startup's core product.* Authored multiple core features of an online/offline restaurant ordering system, as a startup team tryout job. All features are with multiple iterations with customers, fast design-development-deploy cycles, and ended with user 100% satisfaction.* Refactored backend and authored new UI for an online construction project management software. * Competitor analysis and prototyping for the construction project management software's next version.* Variant contracted/private prototypes using C/C++, NodeJS, PHP, MySQL, AngularJS, and Bootstrap.

* Designed and implemented an online rental property management system. This system includes a web portal, a web admin console, and multiple backend services to help landlord list, pre-screen renters, schedule showings, initiate application, finish background check and sign lease online.* Prototyped an automated SMS/online messaging system to respond tenants when check and/or repair needed with-in rentals. * Fast prototyping, content marketing, early test user recruiting, user feedback collecting and refining, and anything else needs to be done for a startup to make good market fitting products.

* Developer of OOBE (Out of Box Experience) Terms of Use in multi-language support in Windows Phone 8.1 Update. * Developer of categorized new phone Settings with quick search in WP 8.1 Update * Owner of investigating fatal issues of variant critical services to unblock new phone OS shipping.* Coordinated with external companie(s) to locate and fix critical bugs at driver layer.

* Multiple products/features quality owner during WP7, 7.5, 8 and 8.1 releases, including media storage engine migration, Contacts, Calendar, Email and SMS’ storage engine and APIs, CEMAPI (CE Mail API) conversation view support, meeting request, message notification, content blocking, nickname cache, and international contacts display and sort support, SMS’ service indication/loading messaging and etc. * Product teamwide owner and driver of critical test criteria, including WP Experiences/Foundations MTBF (Mean Time Between Failure) integration test passes, MPP (Music + Picture + People) performance criteria, and Email’s BITS (Basic Integration Test Suite). Bug bash driver, and manager of outsourced manual test team. * Author of multiple support libraries for testing WP built-in apps, including Email, SMS, Contacts, Calendar, Picture, Music and Podcast Players. * Virtual lead to drive and push large set of legacy testing code migration. Owner and driver for test work transition. * Active participant in WP China Champ virtual team, which is a group of enthusiasts for China specific features. Promoted and assured multiple features, fixes, and quick workarounds to meet China market. * Mentor for an intern project to research and prototype a new test library based on WinRT. This project successfully made the first step towards new tech of authoring future test support libraries.

* Developer of CWA (Communicator Web Access) 2007 core features including notifications, privacy level control, phone call redirect, and common UI library. * Developer of CWA 2005 features including sign in/out, access control request processing, access control management, settings, and user search.

* Designed and authored an internal financial system with ASP.NET 1.1 + SQL Server 2005. * Joined CWA 2005 team as intern to start working on few product features and bug fixes.