Job Summary: We are looking for a Frontend/Fullstack Developer to build and maintain modern web applications, design and implement APIs, and ensure code quality within a collaborative work environment. Key Highlights: 1. Leading company in digital transformation and at the forefront of technology 2. Focus on innovation, sustainable development, and delivering value to customers 3. Responsible, flexible team with expertise and passion for technology We are knowmad mood! We are a leading digital transformation company, constantly evolving and at the forefront of technology. We were founded to drive real change through innovation and sustainable development, with the mission of delivering value to our clients and empowering our talent. Comprising over 3,000 creative, digital, and innovative individuals connected by purpose and capable of building connections with people worldwide. A responsible, flexible team with high adaptability to our clients’ and 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?** At least 4 years’ experience as a Frontend/Fullstack Developer with: * Solid experience in **React** and **Next.js**. * Advanced **TypeScript**. * State management using **Redux, Zustand, Context API**, or similar solutions. * Consumption and integration of **REST APIs**. * Knowledge of **HTML5, CSS3**, and responsive design. * Experience with UI frameworks such as **MUI, Ant Design**, or **Tailwind**. * Experience with **Node.js** and **NestJS**. * Knowledge of **E2E testing with Playwright**. * Ability to collaborate effectively within teams and communicate clearly with clients and multidisciplinary teams. **What would your responsibilities be?** * **Frontend and Fullstack Development:** Build and maintain modern web applications using **React** and **Next.js**, applying sound development practices. * **API Design and Implementation:** Develop and maintain **REST** and/or **GraphQL** APIs using **NestJS**, ensuring efficient integration with frontend and external services. * **Testing and Code Quality:** Write and maintain **end-to-end tests** using **Playwright**; apply **Clean Code**, **SOLID principles**, and design patterns. * **Integration of External Services:** Connect applications with third-party APIs and internal services, ensuring data efficiency and security. * **Multidisciplinary Collaboration:** Work alongside designers, developers, and product managers to translate requirements into functional, scalable solutions. * **UI/UX and Optimization:** Implement attractive, responsive interfaces using modern UI frameworks and best practices for accessibility and performance. **Additionally, we highly value experience and/or knowledge in:** * Prior experience with **testing and automation frameworks**. * Experience in **hybrid or remote projects**. * Knowledge of **agile development methodologies**. * Experience in **DevOps and cloud deployments** (AWS, Azure, or similar). And with us, you can enjoy: **Permanent Contract** **Hybrid model in Palma de Mallorca**: 2 days in office, 3 days from home **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) **Brand Ambassadorship**, via our referral program Refer your friends and earn a bonus! **Events, meetups, tech days, talks… and much more!** *At ***knowmad mood***, we are committed to equal opportunities and respect for diversity. We implement our Equality Plan and the principle of non-discrimination across all our recruitment processes.* Stay updated on our news by following us here → knowmad mood