Full-Stack Engineer (React + Node | AI-native)

Description

Job Summary: We are seeking a Full-Stack candidate with a frontend-first focus, expert in React + TypeScript and Node.js, to build high-quality, autonomous end-to-end digital products using AI tools. Key Highlights: 1. Full-Stack role with frontend-first focus and expertise in React + TypeScript. 2. End-to-end development with Node.js and an API-First approach. 3. AI-native mindset and strong emphasis on software quality. We are knowmad mood! We are a leading digital transformation company, continuously evolving and at the forefront of technology. We were founded to drive real change through innovation and sustainable development, with a mission to deliver value to our clients and empower our talent. Comprising over 3\.000 creative, digital, and innovative people connected to a shared purpose and capable of building connections with individuals worldwide. A responsible, flexible team with high adaptability to our clients’ and the market’s needs, while consistently delivering value, vision, creativity, expertise, professionalism, and passion for technology in every project. The values guiding us toward excellence are collaboration, innovation, commitment, fun, and trust. **What do we value?** * **Full\-Stack profile with frontend\-first focus**, with expert-level proficiency in React \+ TypeScript and experience with modern architectures such as microfrontends. * Ability to develop **end\-to\-end solutions with Node.js**, working under an API\-First approach and within event\-driven environments. * **AI\-native mindset**, critically and productively leveraging AI tools (Copilot, agents, etc.), including experience in Spec\-Driven Development. * Strong focus on **software quality**, with experience in testing, CI/CD, and engineering best practices. * Ability to **autonomously build products from start to finish**, collaborating with multidisciplinary teams. * Interest in the technology ecosystem and participation in **Open Source** is a plus. **What would your responsibilities be?** * **Advanced Frontend Development:** Build modern interfaces with React and TypeScript, ensuring performance, scalability, and consistency by leveraging the Design System. * **Microfrontend Architecture:** Participate in distributed architectures, developing and consuming federated modules across multi\-team environments. * **Backend Development (Node.js):** Design and implement backend services enabling full end\-to\-end closure without external dependencies. * **API Design and Consumption:** Work under an API\-First approach, defining OpenAPI contracts and closely collaborating with backend and frontend teams from early stages. * **Event\-Driven Systems:** Implement event-based and asynchronous messaging solutions to integrate real-time systems. * **AI\-Assisted Development:** Use AI tools such as copilots during development, define workflows with agents, and critically validate generated code. * **Spec\-Driven Development:** Create and evolve technical specifications that guide both manual and AI-driven automated development. * **Quality Assurance:** Implement comprehensive testing strategies (unit, integration, and e2e) and integrate quality controls into CI/CD pipelines. * **End\-to\-End Product Development:** Design, build, validate, and evolve digital products autonomously, with a focus on tangible impact. * **Multidisciplinary Collaboration:** Work alongside product, design, and technology teams to transform requirements into functional solutions. **Additionally, we highly value experience and/or knowledge in:** * Additional full\-stack development with **Java (Spring)** or **Python (FastAPI)**. * Experience beyond Node.js in complex backend environments. * Advanced knowledge of modern, scalable architectures. * Experience with advanced AI tools and workflows applied to development. * Active participation in tech communities or Open Source projects. * Experience in agile development environments. **And with us, you can enjoy:** Permanent Contract **100% REMOTE** Internal training and access to certifications. Check our calendar here: https://www.knowmadmood.com/es/talento/formacion Flexible compensation plan (health insurance, transportation, childcare vouchers, meal vouchers) Become a brand ambassador through our friend referral program. Refer your friends and earn a bonus! Events, meetups, tech days, talks… and much more! 26 days of leave (22 vacation days, 2 discretionary days, and December 24 and 31 are statutory holidays) Working hours: 8\.30–18:00 (flexible) Monday–Thursday; Friday 8:00–15:00; Summer Intensive Schedule (July & August): 8:00–15:00 Stay updated on our news by following us here \-\> knowmad mood *At* ***knowmad mood*** *we are committed to equal opportunities and respect for diversity. We apply our Equality Plan and the principle of non-discrimination across all our recruitment processes.*