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# Full Stack Developer

- **Company:** Agileengine
- **Location:** Spain
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Automation of Tests, Unit Testing, Program Optimization, Data Security, Software Design Patterns, Web Development, Node.Js, TypeScript, Web Platforms, Test-Driven Development (TDD), ReactJS, Backend, React Redux, React Testing Library, Mocha
- **Published:** August 6, 2026
- **Apply:** https://www.jobleads.com/es/job/ed680d5027f60cf3e34955d3db70146c1

## About the Role

If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!, * 4+ years of professional web application development experience ;

 * Expert-level knowledge of Node.js, React, and modern JavaScript/TypeScript ;
 * Broad knowledge of web platforms, browser APIs, state management using Redux or Context, and styling strategies ;
 * Superior analytical and problem-solving ability;
 * Experience with automated unit testing and test-driven development using Jest, React Testing Library, and Mocha/Chai ;
 * Robust understanding of performance issues, computational complexity, and full-stack code optimization ;
 * Familiarity with industry-standard algorithms, component-driven design patterns, and secure data handling ;
 * Effective communication skills to work with different teams across an international company;
 * Upper-intermediate English level.

## Description

We are looking for a Senior Full Stack Developer to build user-facing features in React and maintain robust Node.js backend services for an international product team. You will architect and implement full-stack solutions with expert-level JavaScript and TypeScript, optimize performance across web platforms, implement automated testing with Jest and React Testing Library, and collaborate closely with cross-functional teams to deliver production-ready features. The role requires strong state management experience and a thorough understanding of component-driven design patterns and secure data handling., * Develop user-facing features using modern React workflows while building and maintaining robust Node.js backend services;

 * Architect and implement full-stack solutions, ensuring seamless integration between the front-end UI and back-end APIs;
 * Optimize components for maximum performance across a wide range of web-capable devices and browsers;
 * Collaborate with cross-functional teams to define, design, and ship new features.


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