# Zheng Zhi

> Senior Software Engineer | Platform & Architecture

Location: Milpitas, California, United States
Profile: https://flows.cv/zhengzhi

Senior Software Engineer operating at Staff level across platform-critical backend systems. Transitioned into engineering after a PhD in a non-CS field, and developed deep expertise in system re-architecture, domain modeling, and distributed design.

Known for pragmatic execution, long-term ownership, and cross-domain leadership in high-stakes environments.

Skilled in DDD, event-driven architecture, and scaling systems to millions of users.

## Work Experience
### Senior Software Engineer @ EarnIn
Jan 2020 – Present | Mountain View, California, United States
Led re-architecture of backend systems across Payroll and Earnings domains, powering the company’s most critical financial workflows:

• Rebuilt the Earnings system supporting the Ledger platform, cutting code by 90%, eliminating outbound dependencies, and achieving zero incidents post-launch.

• Migrated Payroll from monolith to microservices; introduced core models (Payroll Setup, Payroll Active) still used across all income-driven products.

• Integrated ML signals, fallback logic, and real-time processors to improve accuracy, reduce latency, and support high-volume operations.

• Championed Domain-Driven and Event-Driven Architecture across the company; mentored engineers and established reusable patterns.

• Recognized with the company-wide Leadership & Ownership Award (2024) and “Exceeds Expectations” performance rating.

### Software Developer (Front-end and Back-end) @ AVTECH Global Consulting
Jan 2017 – Jan 2020 | San Joes, CA
Working on a Single Page Application/Company Website (in Lumissil Microsystems): The project is to develop a modern, responsive, and powerful single-page application/company website. The application needs to implement sophisticated filtering and internal search functions while providing a good user experience

Project of Android Device Automatic Test Platform (in Google): The purpose of this project was to develop a full-featured, automated and intelligent software to test Android devices. The software can detect and simulate any human operation on the android device, test multiple devices with different Android versions at the same time.

Project of Trader Easy: This project was developed for the users to track and record their daily trading activities in the stock market. It offers a lot of functions that include generating detailed trade activity records, accessing their trading history and analyzing charts to find better opportunities.

Project of Student Applying Assistant System: This system was designed for Edueliteusa LLC. It consists of authentication, authorization business modules, together with multiple RESTful APIs and microservice APIs.


## Education
### Doctor of Philosophy - PhD in Materials Science
Stony Brook University
Jan 2013 – Jan 2017

### Master's degree in Materials Science
Stony Brook University
Jan 2011 – Jan 2013

### Bachelor's degree in Materials Science
Beijing Institute of Technology
Jan 2005 – Jan 2009


## Contact & Social
- LinkedIn: https://linkedin.com/in/zhizheng2010

---
Source: https://flows.cv/zhengzhi
JSON Resume: https://flows.cv/zhengzhi/resume.json
Last updated: 2026-03-23