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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Software Development Engineer React / Node.Js - **Company:** Launchmetrics - **Location:** Oña, Spain - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Agile Methodology, Artificial Intelligence, Software as a Service, Software Quality, Data Infrastructure, Node.Js, Performance Tuning, Software Engineering, TypeScript, GitHub Copilot, ReactJS, Apache Spark, Backend, Data Lakes, Information Technology, Graphql, Front End Software Development, React Redux, Restful APIs, Code Restructuring, Data Pipelines, Databricks - **Published:** August 11, 2026 - **Apply:** https://www.buscojobs.com.es/full-stack-software-development-engineer-react-node-js-en-ona-ID-366959232 ## About the Role This role offers hands-on ownership, cross-functional collaboration, and the chance to influence product strategy and AI enhancements. Compensaciones / Beneficios * Contribute to new feature development from architecture to market-ready product * Maintain and modernize existing features through refactors to reduce complexity * Serve as a frontend expert (React/Redux) guiding best practices * Design and optimize database schemas for new or updated implementations * Collaborate with PM, designers, and QA to translate requirements into features * Promote code quality with tests and clean, well-structured code * Drive AI-led improvements and support tooling, documentation, and processes * Refactor and optimize for performance and maintainability Responsabilidades * Engineer Degree - Master Degree in Computer Science * Minimum 2 years of full-stack SaaS experience with Agile methodologies * 2+ years of JavaScript/TypeScript experience * Interest or experience in AI-assisted development workflows (e.g., Claude, GitHub Copilot) * Strong expertise with React * Experience building RESTful or GraphQL APIs * Experience with modern data platforms (e.g., Databricks, Spark, Delta Lake) or similar data pipelines * Understanding of data modeling, performance tuning, and schema evolution in large-scale systems * Fast-paced, self-motivated mindset with problem-solving abilities * Fluent English (spoken and written) Requisitos principales * ## Description Experteer Overview As a Software Development Engineer at Launchmetrics, you will shape Discover, our analytics-driven suite for brand monitoring and benchmarking.You'll own end-to-end features within a pod-driven team, impacting AI-powered insights and data trust for top fashion and beauty brands.You'll work with modern frontend and backend tech to deliver scalable, high-performance experiences.This role offers hands-on ownership, cross-functional collaboration, and the chance to influence product strategy and AI enhancements.Compensaciones / Beneficios * Contribute to new feature development from architecture to market-ready product * Maintain and modernize existing features through refactors to reduce complexity * Serve as a frontend expert (React/Redux) guiding best practices * Design and optimize database schemas for new or updated implementations * Collaborate with PM, designers, and QA to translate requirements into features * Promote code quality with tests and clean, well-structured code * Drive AI-led improvements and support tooling, documentation, and processes * Refactor and optimize for performance and maintainability Responsabilidades * Engineer Degree - Master Degree in Computer Science * Minimum 2 years of full-stack SaaS experience with Agile methodologies * 2+ years of JavaScript/TypeScript experience * Interest or experience in AI-assisted development workflows (e.g., Claude, GitHub Copilot) * Strong expertise with React * Experience building RESTful or GraphQL APIs * Experience with modern data platforms (e.g., Databricks, Spark, Delta Lake) or similar data pipelines * Understanding of data modeling, performance tuning, and schema evolution in large-scale systems * Fast-paced, self-motivated mindset with problem-solving abilities * Fluent English (spoken and written) Requisitos principales * ## Related Videos - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [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) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025)