# Jason D.

> Software Engineer at Amazon, ex-Googler

Location: Berkeley, California, United States
Profile: https://flows.cv/jasond

## Work Experience
### Software Engineer @ Amazon
Jan 2022 – Jan 2025 | Palo Alto, California, United States
Amazon Ads

### Software Engineer @ Google
Jan 2019 – Jan 2022 | MountainView
Search and Youtube remarketing ads, targeting audience

### Software Enginner Intern @ Indeed.com
Jan 2018 – Jan 2018 | San Francisco Bay Area
• In dev and prod, designed and implemented data storage shift from AWS S3 to Mongodb and all ETL end points. Halved UI render time to 480ms and enabled more functionalities development due to flexible data storage. Migrated all data using multi-threading with zero failure. Used Java, Spring Framework, MongoDB and AWS S3/Batch/SQS.
• Refactored current code and added tests, and increased test coverage from 42% to 80%.
• For over 20 Sklearn, XGBoost and LightGBM machine learning models supported, implemented automatic hyperparameter value verification and incorporated into both the WebApp and DS library. Used Python and Jython.
• Created new admin pages to monitor various ML build and resource usage statistics. Implemented backend logics, controller end points and admin authentication. Used React, Redux and Java.
• Built prototype of Alexa extension for Indeed, and won 2nd Place and ‘Most Likely to Succeed’ award in hackathon

### Technology Consultant @ Dubai Chamber of Commerce & Industry
Jan 2015 – Jan 2017 | Dubai, United Arab Emirates
Consulting Project Megasourcing 2020, a Dubai Chamber - Alibaba Group joint project

### Intern NLP Engineer @ SAS Research and Development Co., Beijing
Jan 2013 – Jan 2013 | Beijing
Project: Developing Arabic Version of commercial software SAS “Sentiment Analysis”
• Designed Python algorithms to tokenize 3 million+ Arabic text data, e.g. sentence segmentation and POS tagging
• Implemented Naïve Bayes classifier and Turney Algorithm to perform Arabic NLP tasks including sentiment lexicon bootstrap, feature extraction, Tf-idf marking and sentence polarity analysis
• Created Arabic Sentiment Analysis Models (linguistic and statistical patterns), as core of relevance prediction
• Conducted evaluation and benchmarking of software alpha version, improved recognition accuracy by 67%


## Education
### Master of Science - MS in Information Management and Systems - Software Engineering concentration
University of California, Berkeley
Jan 2017 – Jan 2019

### Master of Arts (M.A.) in Arabic Language and Middle Eastern Studies
Peking University
Jan 2012 – Jan 2015

### B.A in Double Major in Economics and Arabic
Peking University
Jan 2008 – Jan 2012

### High School Diploma
NFLS


## Contact & Social
- LinkedIn: https://linkedin.com/in/zhixuan-dai

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Source: https://flows.cv/jasond
JSON Resume: https://flows.cv/jasond/resume.json
Last updated: 2026-03-22