Software Engineer · Problem Solver

Hi, I'm Zongyao.

I build reliable, scalable software and love turning complex problems into simple, elegant solutions.

📍 Location: Singapore💼 Focus: Backend / Data

About

I'm a Software Engineer specializing in large-scale systems, search infrastructure, and technical strategy. Over the past decade, I've built end-to-end architectures across Meta, Amazon, Walmart/Jet.com, and Microsoft, designing platforms that power mission-critical experiences used by millions of users worldwide.

Skills

Distributed SystemsLarge-Scale Search & RetrievalEnterprise Search PlatformsReal-Time & Low-Latency SystemsRAG (Retrieval-Augmented Generation)Data Lakes & BI PlatformsPrivacy & Compliance InfrastructureTelemetry & Feature Gating SystemsTechnical Strategy & North-Star ArchitectureCross-Org Alignment & Systems IntegrationStaff+ MentorshipDesign Reviews & Technical Decision-MakingFinTech SystemsSupply Chain & Logistics PlatformsProductivity & Communication SystemsAI/ML-Driven Search SystemsC++JavaC#PythonSQLAWSAzure

Experience

Engineering Manager · Meta

Dec 2021 – Now

Software Development Manager · Amazon

May 2020 – Dec 2021

Associate Director of Engineering · Walmart / Jet.com

Jan 2018 – May 2020

Senior Technical Lead · Microsoft

Sep 2011 – Jan 2018

Projects

http-helpers-ts

A TypeScript library of common HTTP magic strings and numbers that you can reference. Values compiled from the IANA registry to ensure only officially supported values are included. The library also supports tree-shaking, so you can import just the values you need and minimize the bundle size.

Math Drills

A speed math exercise I built for my kids to practice addition, subtraction, and multiplication. My record stands at ~14s — they haven't beaten it yet!