Senior JavaScript Developer

Join Monterosa as a Senior JavaScript Developer, where you will be responsible for developing innovative and engaging user interfaces for our digital products. You will utilize your expertise in front-end technologies, responsive design, and advanced tooling to create high-quality, user-centric experiences. Your role will involve user interface development, integration with backend services, performance optimization, code quality and maintenance, and continuous learning and innovation. You should have a strong eye for detail, a passion for building high-performance web applications, and experience with testing frameworks, CI/CD pipelines, and containerization with Docker.

• Conception et développement d'interfaces utilisateur intuitives et réactives en utilisant React et d'autres technologies front-end.
• Collaboration avec les ingénieurs backend pour intégrer les interfaces front-end avec les API backend pour la communication des données.
• Mise en œuvre de techniques d'optimisation des performances pour améliorer la vitesse et l'efficacité des applications front-end.
• You have a strong eye for detail and a passion for building high-performance, scalable, and maintainable web applications
• You enjoy collaborating with designers, backend developers, and stakeholders to bring seamless digital experiences to life
• You have experience with testing frameworks like Jest, React Testing Library, or Cypress, ensuring code quality and stability
• Knowledge of CI/CD pipelines, Git workflows, and containerisation with Docker is a plus
• You are a seasoned Frontend Developer with expertise in React.js, TypeScript, and modern frontend technologies to join our team
• You are passionate about frontend development and staying up to date with the latest technologies,
• Strong understanding of React fundamentals, including JSX, Virtual DOM, and component-based architecture
• Proficiency in HTML5, CSS3 (Flexbox, Grid), and modern CSS frameworks (e.g. Tailwind CSS, Styled Components, Material UI)
• Experience with responsive design techniques and tools to ensure optimal user experiences across different devices
• Mastery of advanced JavaScript (ES6+) concepts, including async/await, promises, closures, and functional programming
• Hands-on experience with TypeScript for type safety and scalable frontend architecture
• Experience integrating and handling RESTful APIs and GraphQL, including authentication, error handling, and security considerations
• Deep knowledge of React state management solutions like Redux, Redux-Saga, Zustand, or React Query
• Familiarity with Webpack, ESLint, Prettier, Vite, or ESBuild to enhance development workflows
• Understanding of browser security constraints, accessibility (WCAG standards), and best practices for frontend security (XSS, CSRF, CORS, SQL Injection protection)
• Expertise in frontend performance optimisation techniques, including code splitting, lazy loading, memoisation, and caching
• Ability to diagnose and resolve frontend performance bottlenecks efficiently
• Advanced experience with browser developer tools, Chrome DevTools, Lighthouse, and performance monitoring tools to analyse memory usage, CPU performance, and network activity