# Xing Xie

> Staff Software Engineer at Coupang

Location: Sunnyvale, California, United States
Profile: https://flows.cv/xingxie

1. Hands-on engineering experience including J2EE framework, RESTful APIs, big data analytics platform developments with Spark/Hadoop/NoSQL DB and cloud technologies
2. Advanced research on database design, big data processing, security access control
3. Strong leadership, can-do attitude and fast learner

Language: Java, Scala, Python, C/C++, Shell scripts, JavaScript
Big Data: Spark, Kafka, Cassandra, MongoDB, Solr/Elastic Search, Hadoop
Dev Tools: J2EE, Spring/Hibernate/Maven, AWS/GCP, Nginx, MySQL, Postgres, Oracle DB, RabbitMQ, Git, Swagger UI, Junit, Tomcat, React

PhD Research: Real-time Data Stream Management System with Access Control

1.     Integrate real time, sensitive data streams from multiple domains
2.	Process streaming input data with Multilevel Security/Chinese Wall policy control
3.	Optimize query execution and scheduling strategies
4.	Extend security-enhanced service to cloud/distributed application

## Work Experience
### Staff Software Engineer @ Coupang
Jan 2020 – Present | Mountain View, California, United States
Search Infrastructure development, Fraud Detection System, Big Data Pipeline, Data Analytics. Spark/Flink/Kafka/Hadoop/HBase/AWS, Solr/Elastic Search.

### Member Of Technical Staff @ eBay
Jan 2018 – Jan 2020 | San Jose, California
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

### Senior Software Engineer @ Apple
Jan 2016 – Jan 2018 | Sunnyvale, California
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.

### Software Engineer @ Sysomos
Jan 2015 – Jan 2016 | Sunnyvale, California
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.

### Software Engineer @ Fuhu, Inc
Jan 2013 – Jan 2015 | Milpitas, California
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

### Teacher Assistant for Database Systems @ Colorado State University
Jan 2008 – Jan 2012 | CSU, Fort Collins, Colorado
Design projects/homeworks and direct labs for students learning computer science principles and software.

### Developer @ Colorado State University
Jan 2012 – Jan 2012
•	Redesign the Key-Card system for registered students in different majors 
access CS Dept. lab with ID, using MS Access 2010
•	Develop modules as redundancy prevention and secure authorization

### Research Assistant @ Colorado State University
Jan 2009 – Jan 2009 | CSU, Fort Collins, Colorado
Designing effecting algorithms on complex workflow satisfactory problem under Role-based access control and user-oriented constraints

### Master Thesis: Improve Design Patterns by Aspect-Oriented Technology @ East China Universtiy of Science and Technology
Jan 2006 – Jan 2007 | Shanghai
Improve 19 design patterns by integrating AOP elements with demo

### Bachelor Thesis: Transform Legacy data to XML data @ East China Universtiy of Science and Technology
Jan 2004 – Jan 2005 | Shanghai
Extract useful data from legacy systems and perform XML transformation

### Developer: Campus IT Lab Management System Development @ East China Universtiy of Science and Technology
Jan 2004 – Jan 2005 | Shanghai
Help requirement analysis and business logic implementation


## Education
### PhD in Computer Science
Colorado State University

### Master in Computer Software and Theory
East China University of Science and Technology

### Bachelor in Computer Science and Technology
East China University of Science and Technology


## Contact & Social
- LinkedIn: https://linkedin.com/in/xing-xie-1a332030
- Portfolio: http://www.cs.colostate.edu/~xing

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Source: https://flows.cv/xingxie
JSON Resume: https://flows.cv/xingxie/resume.json
Last updated: 2026-04-12