Danny Moerkerke is a Principal Member of Technical Staff and seasoned JavaScript/TypeScript engineer with 11+ years building PWAs and Web Components, currently shaping the APEX PWA roadmap at Oracle. He created the reference site What PWA Can Do Today and contributes to notable open-source projects like ING’s lion library, improving accessibility and focus handling in complex UI components. Comfortable across frameworks (Lit, Stencil, Vue, Polymer, React) and vanilla web platform APIs, he designs frontend architectures that leverage modern techniques such as import maps and Material Web Components. A pragmatic problem-solver and clear communicator, he’s regularly invited to speak at meetups and writes about modern web practices. He combines enterprise experience—shipping banking and telecom frontends—with freelance startup work, bringing both product-minded thinking and hands-on implementation skills. Based in Amsterdam, he pairs deep browser-level expertise with a track record of improving developer tooling and component quality in production systems.
11 years of coding experience
15 years of employment as a software developer
Electronica, Electronica at MTS Alkmaar
HAVO Wiskunde Natuurkunde Engels Nederlands Frans Duits, HAVO Wiskunde Natuurkunde Engels Nederlands Frans Duits at Huygenwaard (Havo)
Fundamental white label web component features for your design system.
Role in this project:
Front-end Developer
Contributions:39 reviews, 48 commits, 42 PRs in 8 months
Contributions summary:Danny primarily contributed to the `lion` web component library, focusing on improving the functionality and accessibility of UI components like the accordion. They fixed focus handling issues, ensuring proper tab order and navigation. The user also addressed and fixed failing tests, indicating a commitment to maintaining the quality of the components. Their work demonstrates a strong understanding of web component development and testing.
Contributions:2 reviews, 58 commits, 32 pushes in 3 years 4 months
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Danny Moerkerke - Principal Member Of Technical Staff at Defie Inc.