Jingyi Dai

Software Engineer

San Francisco, California, United States12 yrs 7 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in designing distributed web application backends.
Proficient in RESTful APIs and large-scale data processing.
Strong focus on machine learning and algorithms.

Stackforce AI infers this person is a Backend-heavy Software Engineer with expertise in SaaS and large-scale distributed systems.

Contact

Skills

Core Skills

JavaDistributed SystemsRestful ApisSoftware Development Life Cycle (sdlc)

Other Skills

RESTful WebServicesAlgorithmsHBaseRedisApache TikaJSONLuceneImageIOApache PdfboxAsyncApache SanselanC++OOP designWeb ApplicationsMultithreading

About

A Senior Software Design Engineer with an extensive experience in designing and developing Distributed Web Application Backend and Infrastructure in Java. Current Interest and Focus: • Machine Learning • Search, Relevance, and Ranking Algorithms

Experience

12 yrs 7 mos

Total Experience

4 yrs 2 mos

Average Tenure

7 yrs 10 mos

Current Experience

Netflix

Senior Software Engineer - Original Content Promotion Personalization

Jul 2018 – Present · 7 yrs 10 mos · Los Gatos, California

Recommendation - Original Content Promotion Personalization

JavaRESTful WebServicesDistributed SystemsAlgorithms

Yahoo

Senior Software Engineer, Yahoo Mail Backend

Mar 2016 – Jul 2018 · 2 yrs 4 mos · Sunnyvale, California

Build and support next generation YahooMail Backend with RESTful APIs for large distributed web applications.
In-Sync Attachment Text Extraction using Apache Tika
Design, build, and roll out the next-generation Yahoo search data generation system. Resolve the out-of-sync issue for search metadata and other mail metadata generation. Create new RESTful API for single and batch text extraction requests
Extract search related text data from multiple attachments in parallel using async threads and save the extracted search metadata to HBase
Scales to more than 500 million requests per day
Use open source Apache Tika and pdfbox library. Fix some issues in Tika and pdfbox during development and rollout process
Mail Content Extraction and Analysis for Coupon Clipping Feature
Design, develop, and roll out JSON schemaOrg and Lucene query based mail content detection and analysis feature
Support saving and marking user favorited coupons in email
Categorize and mark emails based on sender domain and mail content with Redis cache system
Thumbnail Generation for Image Attachments
Design, develop, and roll out the Yahoo next-generation thumbnail generation system. Retired hundreds of old thumbnail servers. Create new RESTful API for single and batch thumbnail generation requests
Scales to more than 50 million requests per day
Generate thumbnail in JPEG, BMP, GIF, TIFF, and PNG formats using Apache Sanselan and ImageIO, handle images with Alpha channel and CMYK color space
Generate PDF previews using Apache pdfbox
Data Migration in HBase from Blob-based Storage to Row-based Storage
Design HBase schema and migrate mailbox metadata from blob-based to row-based storage for millions of Yahoo Mail users
Create better data sharding and smaller payload for read/write mailbox metadata requests

RESTful APIsHBaseRedisApache TikaJSONLucene+4

Oracle

Software Engineer

Sep 2013 – Feb 2016 · 2 yrs 5 mos · Santa Clara, California

Design and Develop Data Processing Platform
Implement data processing and optimization algorithms using C++
Apply OOP design principals to better structure and organize millions of data node

C++OOP designSoftware Development Life Cycle (SDLC)