Search Infrastructure development, Fraud Detection System, Big Data Pipeline, Data Analytics. Spark/Flink/Kafka/Hadoop/HBase/AWS, Solr/Elastic Search.

1. Leading eBay aviation B2B platform backend developments:

• Enable advanced search and recommendations APIs among business vendors and customers.

• As full-stack engineer designing and implementing Geo-aware app able to locate cost-effective vendors/customers in real time, from frontend to backend.

2. Member of eBay Partnership Network (affiliate marketing), responsible for daily transaction data pipelines, micro service applications, 3rd party customer management synchronization.

J2EE/Spring Boot/Kafka/Hadoop/Elastic Search/GCP/React/Javascript

3. Member of 3rd Party Feeds data pipeline design and implementation. Make sure daily millions goods sync/update to Facebook, Google Ads under SLA.

Kafka/Spark/Hadoop/Scala/Java

Backend Dev Lead: a self-service load-balancer and web security platform provides fault-tolerance, high-availability, advanced security features to handle millions of Apple business transactions per second.

Fully involved in application and infrastructure development. Continuously apply strong security enforcement on the real-timetransactions,including reliable dashboard framework enhancement, web request validation and machine learning algorithms.

Java/J2EE, Maven, Restful API, Swagger, Sprint Boot, Nginx, Ansible.

1. Grid Engineer member responsible for Real Time Social Analytic Product Backend Server Development, TBs data per day. Be responsible for code refactoring, new feature delivery, and performance optimization. Using Restful APIs, J2EE, Maven, Solr, Hbase, Hadoop, Cloudera CDH.

2. Research Data Scientist for Nature Language Processing (NLP) on Big Data: be the major person who designs the project framework, implements machine learning algorithms and ETL/deployment/testing code. Using Spark/Spark-Streaming/Java/Scala, projects include:

• Sentiment Analysis on human’s opinions on specific products/events with different aspects. Mainly focus on negation detection and Pointwise Mutual Information (PMI) computations.

• Trend Prediction: early identification of real time emerging hot spots/keywords against social media such as Twitter, Facebook, etc.

• Keyword extraction from news, articles, papers.

1. Member of key education product development: new feature delivery, trouble shooting and maintenance on backend servers and database cluster.

Involved in whole software development cycle:

• Development using J2EE/Maven/Spring/Hibernate/Test-Driven/Github

• NoSQL database design using Cassandra/MongoDB Cluster

• Big data analysis using Spark, Scala

• Unit Testing by Junit, Load Test by JMeter/Blazemeter

• Deployment on EC2/Ngnix

2. Company Analytic and Report System:

• Participated in user behavior research, big data analysis, server cluster framework design. Reports to architect, marketing department and founder.

• Cloudera CDH, Kafka, Flume, Hadoop, Scala, Spark, Cassandra, Weka