> Markdown version of [/jobs/ext/1927792-full-stack-web-developer](https://www.wearedevelopers.com/jobs/ext/1927792-full-stack-web-developer). 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). --- # Full-Stack Web Developer - **Company:** BlueSnap, Inc - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Data Analysis, Server Applications, Automation of Tests, Biometrics, Databases, Relational Databases, Github, PostgreSQL, Machine Learning, MongoDB, Node.Js, TypeScript, ReactJS, Snowflake, Software Application Programming, Backend, Figma, Front End Software Development, NestJS, Web Api - **Published:** August 5, 2026 - **Apply:** https://www.buscojobs.com.es/full-stack-web-developer-en-madrid-ID-365488138 ## About the Role 8 years of experience working with server-side applications and building web APIs. 8 years of experience in developing front-end applications. At least 5 years of experience in designing and developing applications using ReactJS. Hands-on experience with MongoDB, PostgreSQL, or Snowflake. Experience working with QA Automation/Tests. Advantages: Experience with StoryBook. Experience with Zustand. Experience working with Figma. Experience working with ArgoCD/Helm Personal Attributes: Innovative and open-minded with a strong passion for technology. Eagerness to learn new things and keep up with industry trends. #J-*****-Ljbffr ## Description BioCatch is the leader in Behavioral Biometrics, a technology that leverages machine learning to analyze an online user's physical and cognitive digital behavior to protect individuals online.BioCatch's mission is to unlock the power of behavior and deliver actionable insights to create a digital world where identity, trust, and ease coexist.Today, 34 of the world's largest 100 banks and 210 total financial institutions rely on BioCatch Connect to combat fraud, facilitate digital transformation, and grow customer relationships..BioCatch's Client Innovation Board, an industry-led initiative including American Express, Barclays, Citi Ventures, and National Australia Bank, helps BioCatch identify creative and cutting-edge ways to leverage the unique attributes of behavior for fraud prevention.With over a decade of data analysis, more than 80 registered patents, and unparalleled experience, BioCatch continues to innovate to solve tomorrow's problems.For more information, please visit .We seek a Full-Stack Web Developer to design, implement, and maintain full-stack web and server applications.The ideal candidate will create testable and maintainable software solutions using front-end and back-end (50%, 50%) technologies, contribute innovative ideas, and recommend software improvements to existing applications.Collaboration with product managers to transform product and user requirements into technical tasks is essential.Location:Barcelona.Hybrid schedule: 2-3 days in the office per week.Responsibilities:Design, implement, and maintain full-stack web and server applications.Create testable and maintainable software solutions using front-end and back-end technologies.Generate innovative ideas and recommend software improvements to existing applications.Work closely with product managers to translate product and user requirements into technical tasks.Required Tech Stack:TypeScriptNodeJS/NestJSDocument-Based Databases (e.g., MongoDB)Relational Databases (e.g., PostgreSQL, Snowflake)GitHub actionsRequirements8 years of experience working with server-side applications and building web APIs.8 years of experience in developing front-end applications.At least 5 years of experience in designing and developing applications using ReactJS.Hands-on experience with MongoDB, PostgreSQL, or Snowflake.Experience working with QA Automation/Tests.Advantages:Experience with StoryBook.Experience with Zustand.Experience working with Figma.Experience working with ArgoCD/HelmPersonal Attributes:Innovative and open-minded with a strong passion for technology.Eagerness to learn new things and keep up with industry trends.#J-*****-Ljbffr ## Related Videos - [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) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [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) - [Boost Productivity with AI: Figma & Playwright MCP Workflows - Aris Markogiannakis](https://www.wearedevelopers.com/videos/1768-boost-productivity-with-ai-figma-playwright-mcp-workflows-aris-markogiannakis) - [Next, Nest, Nuxt… Nust?](https://www.wearedevelopers.com/videos/421-next-nest-nuxt-nust) - [Bringing AI Model Testing and Prompt Management to Your Codebase with GitHub Models](https://www.wearedevelopers.com/videos/1536-bringing-ai-model-testing-and-prompt-management-to-your-codebase-with-github-models) ## Related Articles - [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) - [Dev Digest 139 - Soft and hard queries](https://www.wearedevelopers.com/magazine/487-dev-digest-139-soft-and-hard-queries) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Dev Digest 131 - AI'm not sure about OSS](https://www.wearedevelopers.com/magazine/472-dev-digest-131-ai-m-not-sure-about-oss) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front)