Asem Qaffaf
Senior Software Engineer, Front-End Core Architect at Rakuten
Tokyo, Japan
Summary
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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.
7 years of coding experience
11 years of employment as a software developer
Bachelor of Science Management Information Systems, Bachelor of Science Management Information Systems 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, Microsoft Certified Azure Artificial Intelligence National ICT Artificial Intelligence at Al Hussein Technical University (HTU)Full-Stack Web Development certified Information Technology, Full-Stack Web Development certified Information Technology at Simplon Grand Ouest
Github Skills (35)
zero-configuration10
javascript10
user-interface10
compile10
build-tools10
frontend10
create-react-app10
developer-tools10
react10
typescript9
mern9
declarative9
amazon-ion8
erlang8
github-copilot8
Programming languages (7)
Github contributions (5)
asemqaffaf/asemqaffaf.github.io
Jan 2024 - Nov 2025
Contributions:18 PRs, 94 pushes, 11 branches in 1 year 10 months
asemqaffaf/html
Jun 2019 - Nov 2025
Contributions:3 pushes, 1 branch in 6 years 5 months
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