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# Software Engineer - Front-End Engineer

- **Company:** J.p. Morgan Personal Investing
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Apple IOS, Mobile Application Development, Web Development, Performance Tuning, Responsive Web Design, TypeScript, Enterprise Software Applications, Appium, Material UI, Playwright, Graphql, Es2015, Selenium Webdriver
- **Published:** August 31, 2026
- **Apply:** https://www.jobleads.com/es/job/e369462e9c3b1d8b96fa6682bba52adc0

## About the Role

* Create and maintain clean, efficient, and reusable codebase.
 * Formal training or certification on JavaScript concepts and proficient advanced experience
 * Strong knowledge of JavaScript, TypeScript, and ES6+ syntax
 * Ability to write testable, clean JavaScript code, * Proficiency in React framework
 * Building applications usingReact Nativein TypeScript or JavaScript
 * Native application development across Android / iOS inKotlin/Swift
 * Understanding of REST APIsand GraphQL
 * Comfortable working with projects partially or fully usingTypeScript
 * Using latestReact featuressuch as Suspense and Hooks
 * End to end testing applications withDetox/Appium / WebdriverIO /Playwright
 * Extensive experience in modern web development, including responsive design and performance optimization
 * Hands-on experience with design systems, component libraries, and implementing consistent UI/UX across large-scale applications

## Description

* Collaborate with cross-functional teams to define, design, and ship new features.


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