# yousong Z.

> Leading Projects Aligned with My Passion

Location: San Francisco, California, United States
Profile: https://flows.cv/yousong

Focus on Linux  Backend Dev
PHP   7 years     Senior Level
C++   3 years     Senior Level 
Node.js 3 years     Senior Level

## Work Experience
### Senior Software Engineer @ TetraScience
Jan 2022 – Jan 2023
Working on TDP connector projects heavily  using Node.js

### Full Stack Engineer @ IDbyDNA
Jan 2020 – Jan 2022
Frontend : Built data visualization website with React, D3 as data analytical tool.
Backend : Developed API with NestJS and GraphQL
Related Tech : React, D3.js, Node.js, TypeScript, GraphQL, MongDB/DocumentDB, Selenium

### Software Engineer @ Ankr Network
Jan 2018 – Jan 2019 | San Francisco Bay Area
Design and implement micro-services for Ankr distributed cloud computing platform.
Rewrite a simple and robust framework for micro service to replace micro/micro-go framework
Tech related:
Golang,  MongDB,  K8s, Google Protocol Buffers, RabbitMQ

### Senior Backend Engineer @ Beijing Blue whale technology company
Jan 2015 – Jan 2016 | Beijing City, China
Worked on video chat app Chacha (renamed Holla), ranked 40th in Apple Store of Social Networking in the US.
- Developed API in PHP for both Android and iOS apps.
- Deployed and maintained Amazon AWS server systems
- Managed a team of 10 app developers and conducted code reviews

### Senior Backend Engineer @ Chuanty
Jan 2013 – Jan 2015 | Beijing City, China
Worked on the app for making online doctor's appointments that allows users to search for and book available appointments with their preferred doctor.
- Developed API using PHP; 
- managed a team of 8 developers to develop apps for Android and iOS.

### Software Engineer @ Dragon Soft
Jan 2009 – Jan 2013 | Shanghai City, China
Worked on financial trading tools for Deutsche Bank Tokyo branch in C++.  
Developed two services:
- Automatic order submission system
- Trading system that connects to OSE Market, sends and manages orders

The system used shared memory technology, motif(Sun Linux), multi-threading, event-driven model and Smart Pointer.

### Software Engineer @ Ucloo Tech
Jan 2006 – Jan 2009 | Shanghai City, China
Technology Applied: Perl, PHP, Oracle DB. 
Ucloo is a search engine company specialized in Deep Search of People. 
- developed a platform that ran web crawling scripts in parallel on more than 30 Linux servers. 
- developed two daemon programs in Perl that allowed for communication among different machines, access to the database, retrieval of Linux system information and assignment of tasks and so on. 
I developed shell scripts to manage the cache files.


## Education
### Master's degree in Computer Science
University of San Francisco

### bachelor in biology
Zhengzhou University


## Contact & Social
- LinkedIn: https://linkedin.com/in/yousong-z-605b072b
- Portfolio: http://www.99sns.com

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Source: https://flows.cv/yousong
JSON Resume: https://flows.cv/yousong/resume.json
Last updated: 2026-03-29