> Markdown version of [/jobs/ext/1668398-frontend-web-developer](https://www.wearedevelopers.com/jobs/ext/1668398-frontend-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). --- # Frontend Web Developer - **Company:** Air Apps - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Web Interfaces, HTML, JavaScript (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Browser Compatibility, Cascading Style Sheets (CSS), Software Debugging, Design of User Interfaces, Preprocessor, Responsive Web Design, Data Streaming, Web Applications, Web Application Frameworks, Web Performance Optimization, ReactJS, Git, Vue.js, Syntactically Awesome Style Sheets (SASS), Webpack, AngularJS, Optimization Algorithms, Build Tools, Graphql, Front End Software Development, React Redux, Restful APIs, Software Version Control - **Published:** July 23, 2026 - **Apply:** https://www.buscojobs.com.es/frontend-web-developer-en-madrid-ID-364440670 ## About the Role state management libraries (e.g., Redux, Vuex, or Zustand). Strong understanding of responsive design, accessibility, and cross-browser compatibility . Knowledge of CSS pre-processors (SASS, LESS) and front-end build tools (Webpack, Vite). Familiarity with RESTful APIs, GraphQL, and front-end performance optimization techniques . Experience with version control systems like Git . Strong problem-solving skills and attention to detail. Ability to work in an agile environment and collaborate effectively with cross-functional teams. ## Description About Air AppsAt Air Apps, we believe in thinking bigger-and moving faster. We're a family-founded company on a mission to create the world's first AI-powered Personal & Entrepreneurial Resource Planner (PRP), and we need your passion and ambition to help us change how people plan, work, and live. Born in Lisbon, Portugal, in ****-and now with offices in both Lisbon and San Francisco-we've remained self-funded while reaching over 100 million downloads worldwide.Our long-term focus drives us to challenge the status quo every day, pushing the boundaries of AI-driven solutions that truly make a difference. Here, you'll be a creative force, shaping products that empower people across the globe.Join us on this journey to redefine resource management-and change lives along the way.The RoleAs aFront-End Web Developerat Air Apps, you will be responsible for crafting seamless, high-performance, and visually engaging web experiences. You will work closely with designers, product managers, and back-end developers to build and optimize user interfaces using modern web technologies. Your work will directly impact millions of users, ensuring intuitive and efficient interactions with our AI-powered platform.This is afully onsite position, based at our office in Lisbon, where you will collaborate closely with cross-functional teams in person and contribute to a dynamic and fast-paced environment.We are open to support with relocation efforts.ResponsibilitiesDevelop and maintain responsive, user-friendly web applications usingHTML, CSS, and JavaScript frameworkssuch asReact, Vue, or Angular.Collaborate with UI/UX designers to translate design concepts into interactive and accessible web interfaces.Optimize applications for performance, scalability, and cross-browser compatibility.Implement reusable components and maintainable front-end architectures.Work closely with back-end developers to integrate APIs and ensure seamless data flow.Stay up-to-date with emerging front-end technologies, trends, and best practices.Debug and resolve front-end issues to ensure a smooth user experience.RequirementsAround3+ yearsof experience in front-end web development.Proficiency inHTML, CSS, JavaScript, and modern frameworkssuch asReact, Vue, or Angular.Experience withstate management libraries(e.g., Redux, Vuex, or Zustand).Strong understanding ofresponsive design, accessibility, and cross-browser compatibility.Knowledge ofCSS pre-processors(SASS, LESS) and front-end build tools (Webpack, Vite).Familiarity withRESTful APIs, GraphQL, and front-end performance optimization techniques.Experience with version control systems likeGit.Strong problem-solving skills and attention to detail.Ability to work in an agile environment and collaborate effectively with cross-functional teams.What benefits do we offer?Apple hardwareecosystem for work.Annual BonusTop-tier Health and Life Insurancefor peace of mind.Transportation Budgetto support your commute needs.Coverflexbenefits package for meal allowances, well-being, and more.Childcaresupport.Air Conference- an opportunity to meet the team, collaborate, and grow together.Pension Fundto support your long-term financial planning.Urban Sports Clubmembership to keep you active.Meals 100% freeat the hub.Diversity & InclusionAt Air Apps, we are committed to fostering a diverse, inclusive, and equitable workplace. We enthusiastically welcome applicants from all backgrounds, experiences, and perspectives. We celebrate diversity in all its forms and believe that varied voices and experiences make us stronger.Application DisclaimerAt Air Apps, we value transparency and integrity in our hiring process. Applicants must submit their own work without any AI-generated assistance. 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