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.

Experience

2020 — NowEarnInSenior Software Engineer

2020 — Now

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.

2017 — 2020AVTECH Global ConsultingSoftware Developer (Front-end and Back-end)

2017 — 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

2013 — 2017

Stony Brook University

Doctor of Philosophy - PhD

2013 — 2017

2011 — 2013

Stony Brook University

Master's degree

2011 — 2013

2005 — 2009

Beijing Institute of Technology

Bachelor's degree

2005 — 2009