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JavaScript developer (E-Commerce)

Wiraa

Salary not specified
Sep 15, 2025
Remote, US
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Endereço is a German SaaS company that needs to solve address-related challenges for online retailers worldwide by providing an innovative JavaScript SDK for front-end integrations to ensure accurate and efficient address validation.

Requirements

  • Minimum of 3+ years of intensive experience in Vanilla JavaScript (ES6+)
  • Proficiency with modern JavaScript tooling such as Webpack, Rollup, or Vite
  • Deep understanding of browser APIs and cross-browser development
  • Experience with asynchronous programming using Async/Await and Promises
  • Strong skills in DOM manipulation and performance optimization
  • Knowledge of module systems (ES6, CommonJS, UMD)
  • Experience in SDK or library development, including architecture and API design

Responsibilities

  • Further develop and optimize the JavaScript SDK, focusing on performance, features, and developer experience
  • Ensure cross-browser compatibility, including support for IE11 to modern browsers
  • Optimize bundle size through techniques like tree-shaking and code splitting
  • Integrate and synchronize the SDK with backend APIs for seamless data flow
  • Lead the migration to TypeScript to enhance developer experience and code safety
  • Design and implement integration workflows for various e-commerce platforms
  • Expand and simplify configuration APIs for easier plugin development

Other

  • Excellent communication skills in German or English
  • Collaborative mindset with a focus on performance, user experience, and code quality
  • Performance bonuses based on SDK adoption and performance metrics
  • Flexible remote working arrangements with the team located in Randersacker (near Würzburg)
  • Collaborative and innovative work culture emphasizing performance, quality, and user-centric design