Senior React Native Engineer - Frontend Innovator

Next Frontier Capital; Madrid; Presencial; EUR 50.000 - 80.000; Jornada completa

Descripción de la vacante

J.P. Morgan Personal Investing is seeking a Front-End Engineer to deliver cloud-native, microservices-based web solutions with modern JavaScript/TypeScript and React.

The role involves collaborating with cross-functional teams, designing scalable UI components, and ensuring high quality through testing and best practices. Strong React, React Native, and REST/GraphQL knowledge are required, with a focus on responsive design and performance.

Formación

• Proficiency in React framework.
• Building applications using React Native in TypeScript or JavaScript.
• Native application development across Android / iOS in Kotlin / Swift.
• Understanding of REST APIs and GraphQL.
• Comfortable working with projects partially or fully using TypeScript.
• Using latest React features such as Suspense and Hooks.
• End to end testing applications with Detox / 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.

Responsabilidades

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

Conocimientos

React

React Native

TypeScript

JavaScript

Kotlin

Swift

REST APIs

GraphQL

React Hooks

Playwright

Detox

Appium

WebdriverIO

Responsive design

Performance optimization

Design systems

Component libraries

UI/UX consistency

Herramientas

Detox

Appium

WebdriverIO

Playwright

Descripción del empleo

J.P. Morgan Personal Investing is seeking a Front-End Engineer to deliver cloud-native, microservices-based web solutions with modern JavaScript/TypeScript and React.

The role involves collaborating with cross-functional teams, designing scalable UI components, and ensuring high quality through testing and best practices. Strong React, React Native, and REST/GraphQL knowledge are required, with a focus on responsive design and performance.