Jerry Wei Email & Phone Number

Bentonville, Arkansas, US

• Project OverviewSearch BigData system consist of various features including indexing pipeline, ETL process, signalpipeline and analytics pipeline. This system manages all data for Merch Modules, Lefthandnavigation.
• Implement ETL job using Python to process user behavior data including clicking, check-out and query on Walmart site and load those data into HIVE tables after doing respectiveaggregation.
• Implement NRT processor with Spark to generate index document.
• Implement python job to generate different signal and persist the results into K-V store.
• Migrate job to Airflow for dynamic pipeline generation and higher scalability and bettermonitoring as well.
• Come up with Dashboard on Graphana for the purpose of monitoring the status of pipelines.

Bentonville, Arkansas, US

• The ODS is a cumulative data repository that associates and stores customer order fulfillment operational events and their associated data. This provides a common platform that represents a single source of truth.
• Develop the Spouts and Bolts within Storm to consume the order events and purchase order events from Kafka topic.
• Update/Insert aggregated record data into ElasticSearch after processing some filtering, combination and aggregation.
• Develop a event watcher to notified the Kafka producer to send a new message to event store Kafka Topic.
• Redefine the DB table structure and persist the record sourced from Kafka event store Topic into oracle database for better visualization and query functionality.
• Commit the changes into remote Git repository after building successfully with Maven and performing UT, then processing deployment in lower environment via OneOps.

Bentonville, Arkansas, US

• Involved in Requirements gathering, analysis and design and documentation as the application exposed many new feature.
• Analyze, design, development of software systems to form a basis for the solution of information processing problems.
• Responsible for analysis of current programs including performance, diagnosis and troubleshooting of programs presenting challenges and design solutions to overcome such.
• Designed and developed Web Services (Restful).Created and compiled XML Schema to generate Java Bean classes using Jersey and Jackson.
• Develop core Java programs for all business rules and workflows using spring framework
• Re-factor existing code structure to separate core business logic and Data Access Objects (DAOs).

• Responsibilities
• Provide effort estimation according to business requirement & function requirement to Onsite.
• Involve in gathering, analyzing and documenting business requirements, functional requirements and data Specifications for application development.
• Summarize the requirement as one diagram with business flow information and distribute these knowledge to team
• Involve in design, configuration, development and bug-fixes.
• Provide recommendations to management concerning issues of programmer productivity and software development management.

• Responsibilities
• Design the functionality with sequence diagram and class diagram by using tool Rational Rose.
• Developed the UI Screens using JSP, JavaScript and HTML and did the client side validation with the JavaScript.
• Involve in design, configuration, development and bug-fixes.
• Extensively used Hibernate in data access layer to access and update information in the database.
• Used Spring IOC (Inversion of Control) to remove the object dependencies across the application.