Hang Y. Email & Phone Number

United States

Chicago, Illinois, United States

Lessen + SMS Assist -> Lessen

One Platform Work Order Dispatch System Development• Built monolith MVVC and API projects on a work order dispatch platform for different user groups (internal, affiliate, and client) using .NET Core/.NET Framework, C#, JavaScript, ReactJS/KnockoutJS, MySQL/MongoDB/AWS S3, etc..• Developed web API services using Microservice infrastructures (Istio/Docker/EKS) and implement those functionalities by .NET Core/EntityFramework/C#, Java, etc..• Placed the remote repo in GitLab and used Git to do source code version control.• Tracked Tickets in JIRA board and collaborate with cross-states and international team members in sprints.• Integrated Sonarqube into the CI/CD pipeline for code quality and security analysis, improving the team efficiency by detecting bugs, vulnerabilities and code smells by 40%.• Oncall support production releases and live issues/logs diagnosis with toolkits, like Kiali, SumoLogic, AWS CloudWatch and PagerDuty.

FIXT - the next generation of work order SaaS platform (startup project inside)* Built and maintained a BFF style-designed domain work order service application to support different devices: web portal and mobile apps.* Used Azure Event Bus and ASP.NET ABP Framework to handle work order life cycle synchronization among different applications.* Built Open APIs and support Swagger UI.* Used GitLab repos to manage code source and Azure Insights, Sumo Logic, Kiali to do code diagnosis.Achievements:1. Refactored the proposal and invoice modules with Event-Driven pattern and CQRS pattern.2. Support the beta release and deployment of FIXT apps.

Chicago, Illinois, United States

E-Commerce Website Design and Development• Analyzed business requirements and built an online store hosted on the commerce platform Shopify.• Collaborated with four team members to work agilely in JIRA .• Implemented extra customized functionalities and layouts by using JavaScript, HTML5, CSS3, and Liquid template language.• Evaluated and improved the performance of website navigation, loading by 20% through refactoring original code base.• Developed a set of bash scripts to process bulk files uploading, editing and replacement and improved the team efficiency by 90%.

Greater Chicago Area

CS - CS109 C/C++ Programming for engineers with MatLabProgram design using C/C++: Data types and operators, control structures, functions, file I/O, arrays and structures. Engineering applications: Matrices, 2D/3D Image Processing, Audio Processing, equation solution, MatLab. Programming assignments.Responsibilities:* Led two Matlab programming labs with instructions on programming concepts, like arrays, plots, functions, loops, as well as image/sound processing* Held Office hours to answer questions and graded assignments* Led lectures as a substitute lecturer when Prof was not available.* Attended weekly meeting and reported to Professor

Responsibilities:* Designed new card transaction program as well as its network routing from peripheral devices to core banking system;* Implemented contactless transaction logics and designed table scheme to store contactless transaction logs;* Maintained existing magnetic strip card transactions and upgraded magnetic card to integrated circuit card;* Utilized HSM server and 3DES algorithm to verify card password, Track2 and CVV2 to avoid fraudulent transactions. The debit card application has been successfully applied in Canada, Australia, Hong Kong, Singapore and most of South Asia payment market.

Responsibilities:* Utilized Kanban to manage project progress and IBM internal version control tools like Changeman, Informan to release and deploy projects;* Designed clearing, settlement, and statement logics for savings transactions, like online payment and monthly statement;* Offered 7*24 support on call duty to monitor batch transactions and handle urgent customer tickets;Successfully delivered and supported three important releases of savings system.

Responsibilities:* Identified and acted to improve knowledge of database query and analysis.* Stayed current on latest card payment and management transactions development technologies. * Built codes, test cases, documentations to support data query and visualization, as well as online payment transactions.The online transaction programs have been released and applied to serve millions of cardholders.

• Learned J2EE core concepts, Struct, Spring, Hibernate framework, JDBC and Java Server Page (JSP); as well as web development knowledge, like Ajax, HTML/CSS. • Designed a virtual ATM system project with deposit, withdrawal and transfer functionalities