years building software at Amazon
Software engineer · Vancouver, BC
Building systems that make complex work clearer.
I’m Kexin Zhao, a software engineer focused on scalable backend services, data workflows, and tools for financial decision-making.
faster large-scale data workflows
records handled per negotiation round
01 / Experience
Systems work,
measured in outcomes.
Software Development Engineer
AmazonBuilt internal platforms that help retail teams model vendor negotiations, understand financial outcomes, and move faster with reliable data.
- Reduced processing time for 10K+ record negotiation rounds from roughly 48 hours to under 12 through query optimization, pre-filtering, and batching.
- Designed Java services on AWS and React interfaces for entering financial terms and calculating detailed metric breakdowns.
- Developed ETL pipelines that enabled downstream reporting and analytics for financial teams.
02 / Technical focus
A practical
engineering stack.
Languages
Java
SQL
Python
JavaScript
Systems
AWS
Backend services
Data pipelines
Data modeling
Interface
React
Node.js
Full-stack development
Financial tooling
03 / Background
I care about the details that make software dependable.
My work brings together backend engineering, data accuracy, and thoughtful product collaboration. I hold a B.A. in Computer Science from the University of British Columbia and am based in Vancouver.
04 / Contact