> Markdown version of [/jobs/ext/2757156-software-engineer-iii-react-native-madrid](https://www.wearedevelopers.com/jobs/ext/2757156-software-engineer-iii-react-native-madrid). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer Iii- React Native- Madrid - **Company:** JPMorgan Chase & Co. - **Location:** Valencia, Spain - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Apple IOS, Mobile Application Development, Web Development, Design of User Interfaces, Performance Tuning, Systems Development Life Cycle, Responsive Web Design, Software Engineering, TypeScript, Enterprise Software Applications, Appium, Software Application Programming, Material UI, Playwright, Codebase, Graphql, React Native, Es2015, Selenium Webdriver - **Published:** September 6, 2026 - **Apply:** https://www.buscojobs.com.es/software-engineer-iii-react-native-madrid-en-valencia-ID-369711324 ## 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 Preferred qualifications, capabilities and skills: 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 #ICBCareers #ICBEngineering #J-*****-Ljbffr ## Description Behind every investment is a person with ambitions, motivations and values.While we know that every client is unique, they come to J.P. Morgan Personal Investing for the same reason: our straightforward and transparent approach to investing, and the trust that 150 years of J.P. Morgan heritage brings.J.P. Morgan Personal Investing offers award-winning investments, products and digital wealth management services to over 275,000 investors in the UK.We built the business withinnovation as a core part of our ethos to give consumers the confidence and clarity to make informed investment decisions and achieve their financial goals.As a Software Engineer - Front-End Engineer at J.P. Morgan Personal Investing, you will be a part of a flat-structure organization.Your responsibilities are to deliver end-to-end cutting-edge solutions in the form of cloud-native microservices architecture applications leveraging the latest technologies and the best industry practices.You are expected to be involved in the design and architecture of the solutions while also focusing on the entire SDLC lifecycle stages.Job responsibilities: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 experienceStrong knowledge of JavaScript, TypeScript, and ES6+ syntaxAbility to write testable, clean JavaScript codePreferred qualifications, capabilities and skills:Proficiency in React frameworkBuilding applications usingReact Nativein TypeScript or JavaScriptNative application development across Android / iOS inKotlin/SwiftUnderstanding of REST APIsand GraphQLComfortable working with projects partially or fully usingTypeScriptUsing latestReact featuressuch as Suspense and HooksEnd to end testing applications withDetox/Appium / WebdriverIO /PlaywrightExtensive experience in modern web development, including responsive design and performance optimizationHands-on experience with design systems, component libraries, and implementing consistent UI/UX across large-scale applications#ICBCareers #ICBEngineering#J-*****-Ljbffr ## Related Videos - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [Building Better Apps with React Native](https://www.wearedevelopers.com/videos/1466-building-better-apps-with-react-native) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [There's an app for that - on the role of cross platform development in the app development ecosystem](https://www.wearedevelopers.com/videos/278-there-s-an-app-for-that-on-the-role-of-cross-platform-development-in-the-app-development-ecosystem) - [Unleash your web skills on native!](https://www.wearedevelopers.com/videos/122-unleash-your-web-skills-on-native) - [Event based cache invalidation in GraphQL](https://www.wearedevelopers.com/videos/433-event-based-cache-invalidation-in-graphql) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Cross Platform Mobile Development Frameworks to Use in 2025](https://www.wearedevelopers.com/magazine/404-cross-platform-mobile-development-frameworks-to-use-in-2025) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)