Asem Qaffaf
Senior Software Engineer at Rakuten
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolAsem Qaffaf is a Senior Software Engineer based in Tokyo with seven years of experience building high-impact web platforms and developer tooling. He has driven end-to-end quality and performance improvements at Rakuten by introducing Playwright/Cucumber testing, a Storybook visual-regression workflow, and refactoring legacy JS to boost Core Web Vitals. Previously he led teams and full-stack projects at simpleasy and Expedia Group, delivering Server-Driven UI, GraphQL integrations, and ad systems tied to large revenue streams. His background spans real-time media (WebRTC/Mediasoup), scalable AWS services for eSIM distribution, and cross-platform mobile using React Native, reflecting a hands-on, product-focused engineering style. Asem pairs strong implementation skills with systems thinking—often tackling both CI/QA pipelines and frontend performance—to reduce regressions and improve retention. His GitHub bio’s motto, “Keizoku wa chikara nari,” hints at a disciplined, continuous-improvement approach that informs his leadership and technical craft.
6 years of coding experience
11 years of employment as a software developer
Bachelor's degree, Information Technology, Bachelor's degree, Information Technology at Al-Zaytoonah University of JordanMaster's degree, Computer Science, Master's degree, Computer Science at Maharishi International UniversityMicrosoft Certified Azure Artificial Intelligence National ICT, Artificial Intelligence, 100%, Microsoft Certified Azure Artificial Intelligence National ICT, Artificial Intelligence, 100% at Al Hussein Technical University (HTU)Full-Stack Web Development certified, Information Technology, 94.3%, Full-Stack Web Development certified, Information Technology, 94.3% at Simplon.co Grand Ouest
Github Skills (38)
zero-configuration10
javascript10
typescript10
user-interface10
otp10
compile10
declarative10
build-tools10
frontend10
developer-tools10
create-react-app10
react10
erlang9
gleam9
elixir8
Programming languages (7)
Github contributions (5)
asemqaffaf/asemqaffaf.github.io
Jan 2024 - Feb 2024
Contributions:18 PRs, 86 pushes, 11 branches in 1 month
asemqaffaf/3ard-w-talab-NEW
Dec 2019 - May 2021
Contributions:1 PR, 2 pushes, 1 branch in 1 year 5 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.