ReactJs Front End Developer with testing

UI / React Developer (ReactJS) with Cypress testing Location: Montreal, Canada (Hybrid 3 days) Duration: Contract Experience: 10+ Years Key requires skills: Expertise in React JS, Cypress for testing D3.js for complex graph and data visualization. Job Overview We are seeking a highly experienced UI / React Developer with strong expertise in building modern, scalable, and high-performance web applications using ReactJS. The ideal candidate will have extensive experience developing complex user interfaces, interactive data visualizations, and micro frontend architectures while following modern development and testing best practices. Required Skills • 10+ years of overall software development experience. • Strong hands-on experience with ReactJS and modern JavaScript (ES6+). • Experience building highly interactive and responsive web applications. • Expertise in D3.js for complex graph and data visualization. • Strong understanding of HTML5, CSS3, and responsive UI development. • Experience with Micro Frontend Architecture and component-based application design. • Hands-on experience with automated UI testing using Cypress and/or Selenium. • Experience consuming REST APIs and integrating backend services. • Familiarity with Git, Agile/Scrum methodologies, and CI/CD pipelines. • Strong problem-solving, debugging, and communication skills. Preferred Qualifications • Experience optimizing UI performance and scalability. • Knowledge of reusable component libraries and design systems. • Experience working in enterprise-scale application development environments. • Exposure to cloud platforms and DevOps practices is a plus. Key Responsibilities • Design, develop, and maintain modern ReactJS applications. • Build complex, interactive dashboards and graph visualizations using D3.js. • Develop scalable applications using Micro Frontend architecture. • Create reusable UI components and ensure responsive user experiences. • Develop and maintain automated UI test suites using Cypress or Selenium. • Collaborate with UX designers, product owners, and backend developers to deliver high-quality solutions