# Allen Shen

> Staff Software Engineer(Ads Quality) at Coupang

Location: San Jose, California, United States
Profile: https://flows.cv/allenshen

## Work Experience
### Staff Software Engineer @ Coupang
Jan 2022 – Present | Mountain View, California, United States

### Senior Software Engineer @ Coupang
Jan 2020 – Jan 2022 | Mountain View, California, United States
- Own the Machine Learning-driven ads bidding end-to-end
- Develop new features and improve tree and DNN models to improve click-through rate and conversion rate 
- Built new bidding products (target ROAS/Spend/Acquisition etc) on search ads, video ads, and offsite ads.
- Drive bidding optimization improvements through Feedback/ROAS Model/Selective Serving etc

### Senior Software Engineer @ 5Miles LLC
Jan 2015 – Jan 2018 | Beijing City, China
- Increased daily traffic and revenue by 21% and 8%, respectively, by implementing recommendation engine to individualize user home feed, item notification, weekly digest, and targeted campaigns.
- Reduced processing time of machine learning-based fraud detection system from 35 mins to 15 secs to discover scam and content abuse by training decision tree and logistic regression models.
- Processed 5 million daily requests with less than 200 ms average latency from marketing campaigns and in-app advertising by delivering user profile, more than 200 user segments, and 3500 popular tags.
- Acquired 1.3 million new users by performing A/B testing, friend invitations, and gamified referral bonuses.

### Senior Software Engineer @ LightInTheBox
Jan 2014 – Jan 2015 | Beijing City, China
- Improved 7% of weekly orders by applying collaborative filtering and Apriori algorithms to recommend products on homepage, cart and checkout pages.
- Increased 13.7% of daily page views by utilizing click-through rate prediction to Women’s Clothing, Shoes and Bags, Wedding and Events, and Consumer Electronics categories.
- Compressed ETL and report generation time from 90 mins to 5 mins by building a distributed streaming data pipeline on AWS to replace local on-premise Hadoop clusters.

### Software Engineer @ IBM
Jan 2012 – Jan 2014 | Suzhou, Jiangsu, China
- Developed map-reduce jobs to process terabytes of data on Hadoop clusters for financial customers.
- Migrated jobs from mainframes onto Hadoop clusters to save customers 30% of annual cost.


## Education
### Master's degree in Computer Science
University of Southern California

### Business/Commerce in General
Y Combinator

### Bachelor of Science (B.Sc.) in Information and Computing Science
University of Liverpool

### Bachelor of Science (B.Sc.) in Information and Computing Science
Xi'an Jiaotong Liverpool University


## Contact & Social
- LinkedIn: https://linkedin.com/in/shenzhun
- Portfolio: https://allenshen.com

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