Summary
Overview
Work History
Education
Skills
Career Hiatus
Languages
Certification
Timeline
Generic
YING-WEN CHEN

YING-WEN CHEN

Belmont,CA

Summary

Detail-oriented engineer who designs, develops and maintains highly scalable, secure and reliable data pipeline. Responsive expert experienced in monitoring data processing performance, troubleshooting issues and optimizing distributed environment. Possesses strong analytical skills, excellent problem-solving abilities, and deep understanding of big data technologies and systems. Looking for a job that work closely with machine learning teams and focuses on architecture design.

Overview

15
15
years of professional experience
1
1
Certification

Work History

Staff Data Engineer

Visa Inc.
04.2019 - 02.2022
  • Analyzed complex data and identified anomalies to provide solid strategies to save 30% of disk space in clusters and improve performance.
  • Contributed to internal activities for the data platform efficiencies and availabilities by creating a validation mechanism which reduced maintenance window by hours.
  • Prepared documentation, analytic reports, delivering summarized results, analysis and conclusions to business teams. Working with over 100+ data analysts and data scientists among USA, UK and Singapore.
  • Planned and installed upgrades of Spark framework to enhance performance as Spark Subject Matter Expert.
  • Planned and implemented applications to test Spark performance on Hadoop and Kubernetes.

Staff Data Engineer

Visa Inc.
04.2016 - 03.2019
  • Reviewed project specifications and designed technology solutions that replaced a legacy ETL system using Spark, Scala and Hive in Hadoop eco system to met or exceeded performance expectations. This project cut down $500K budget yearly for licenses and shorten the output generation time.
  • Analyzed proposed technical solutions based on customer requirements by POC.
  • Worked with software development and testing team members to design and develop robust solutions to meet client requirements for functionality, scalability, and performance.
  • Provided guidance and mentored less-experienced staff members.
  • Collaborated with business, data platform and infrastructure partners regarding software application deployment and maintenance plan.


Senior Software Engineer

Populous Group
06.2015 - 04.2016
  • Offered experience with Scala and Python.
  • Updated old code bases to modern development standards, improving functionality.
  • Developed Referential integrity check to detect suspicious credit card usages.

Senior Java/ Big data Developer

Uni-President Enterprise Corp
05.2011 - 07.2012
  • Regulate the data access flow which obeyed Personal Information ACT
  • Developed and enhanced search programs with features such as Apache Solr, HDFS and MapReduce.
  • Create BI system for the e-commerce website to map out sales strategy
  • Directed the planning and design of a recommender system on e-commerce website

Application Architect

GPS Star Inc
09.2009 - 04.2011
  • Create a POI (point of interested) recommender system for car owners by analyzing their footprint on multi-devices.
  • Researched materials to determine appropriate selection for projects.
  • Adhered to timelines to meet quality assurance targets.
  • Conducted technical evaluations of engineering designs and test results.

Senior Java Developer

Syspower
03.2007 - 05.2008
  • Wrote, modified and maintained software documentation and specifications.
  • Designed a full-stack membership application.
  • Collaborated in team-based, Agile environment to accomplish objectives by deadlines.
  • Built a billing system using J2EE framework.

Education

Master of Science - Computer Science

California Lutheran University
Thousand Oaks, CA
10.2014

Skills

  • Apache Spark with Scala and Python
  • Data visualization with Tableau
  • Apache Hive
  • Hadoop Eco System
  • Jupyter Notebook
  • Presto
  • User Access Management
  • Data Lakes
  • CI/CD

Career Hiatus

Take time off to raise an one-year old kid

Obtain 5 certificates in 2022 -2023

Languages

Chinese (Mandarin)
Native or Bilingual
English
Full Professional

Certification


  • Machine Learning Specialization
  • Supervised Machine Learning: Regression and Classification
  • Advanced Learning Algorithms
  • Introduction to Data Science in Python

Timeline

Staff Data Engineer

Visa Inc.
04.2019 - 02.2022

Staff Data Engineer

Visa Inc.
04.2016 - 03.2019

Senior Software Engineer

Populous Group
06.2015 - 04.2016

Senior Java/ Big data Developer

Uni-President Enterprise Corp
05.2011 - 07.2012

Application Architect

GPS Star Inc
09.2009 - 04.2011

Senior Java Developer

Syspower
03.2007 - 05.2008

Master of Science - Computer Science

California Lutheran University

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YING-WEN CHEN