Himalayas logo
JH
Looking for a job

Jacky Han

@jackyhan

Senior software engineer specializing in scalable cross-border payments platforms.

United States
Message

What I'm looking for

I am seeking senior engineering roles focused on scalable payments or platform systems, collaborative teams, strong CI/CD, and opportunities to drive performance, reliability, and international product expansion.

I am a senior software engineer with deep experience building scalable, secure payment platforms and customer-facing applications. I have led cross-functional initiatives that connect global wallets and partner payment services using React, TypeScript, Java, Node.js, and GraphQL.

At PayPal I architected a cross-border payments platform that expanded access to billions of wallet users, improved international checkout completions by double digits, and processed millions of cross-network transactions daily with low added latency. I emphasize performance, reliability, and security, implementing optimizations like code-splitting, GraphQL batching, OAuth2 flows, and comprehensive test coverage.

Previously I delivered global ticketing and mobile-first experiences at StubHub, increasing mobile engagement and improving multilingual buyer conversion through responsive UI, scalable APIs, and improved event discovery. I have a track record of shortening partner integration time, reducing defects, and accelerating CI/CD pipelines with Docker and Kubernetes.

I value collaboration with product and UX teams to deliver localized, compliant experiences across international markets, and I bring a pragmatic, metrics-driven approach to building resilient distributed systems and developer-friendly integrations.

Experience

Work history, roles, and key accomplishments

PayPal logoPA
Current

Senior Software Engineer

Jan 2020 - Present (5 years 8 months)

Architected a cross-border payments platform connecting PayPal, Venmo, UPI, and WeChat Pay, expanding access to 2B+ global wallet users and raising international checkout completions by double digits through localized checkout flows.

Education

Degrees, certifications, and relevant coursework

Dickinson College logoDC

Dickinson College

Bachelor of Science, Computer Science

2013 - 2017

Completed a Bachelor of Computer Science program covering core topics in computing from 2013 to 2017.

Interested in hiring Jacky?

You can contact Jacky and 90k+ other talented remote workers on Himalayas.

Message Jacky

People also viewed

View all talent

Find your dream job

Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!

Sign up
Himalayas profile for an example user named Frankie Sullivan
Jacky Han - Senior Software Engineer - PayPal | Himalayas