Middle Frontend Developer

Google Chrome Microsoft Edge Apple Safari Mozilla Firefox Middle Frontend DeveloperFull-timeCompany DescriptionDo you enjoy building sleek, high-performance web applications? We are looking for a Middle Frontend Developer to join our Front-end Development Team. This is a full-time remote opportunity based in Brasília, Federal District, Brazil, with flexibility to work from anywhere.At Sigma Software, we partner with global innovators to deliver cutting-edge solutions across industries. In this role, you will work on modern web applications using React.js and GraphQL, collaborating with talented designers, backend developers, and QA engineers to create seamless user experiences.Why join us? You’ll benefit from remote work flexibility, professional growth opportunities, and the chance to work on international projects with a supportive, skilled team.CUSTOMER Our customer is a technology-driven organization delivering modern web solutions to global clients. They focus on creating scalable, high-performance applications with intuitive user interfaces, leveraging cutting-edge frameworks and tools. Their teams work across diverse industries, ensuring each product meets the highest standards of usability, performance, and security.PROJECT The project involves developing and maintaining advanced web applications using React.js and GraphQL. The goal is to deliver seamless, responsive, and user-friendly experiences for end users while ensuring scalability and performance. You will collaborate closely with backend developers, designers, and QA engineers to build robust solutions. Job Description Develop and maintain web applications using React.js and GraphQLCollaborate with designers and backend developers to build scalable, high-performance applicationsWrite clean, maintainable, and efficient code following best practicesImplement responsive and user-friendly UI componentsOptimize applications for performance and scalabilityDebug and troubleshoot issues across multiple browsers and devicesParticipate in code reviews and contribute to team knowledge-sharing(Optional) Write and maintain end-to-end tests using PlaywrightQualifications2+ years of experience in front-end development with React.jsStrong understanding of JavaScript (ES6+), HTML5, and CSS3Hands-on experience with GraphQL (Apollo Client or similar)Familiarity with React Hooks, Context API, Redux (optional)Experience with RESTful APIs and third-party integrationsUnderstanding of component-based architecture and state managementKnowledge of performance optimization and debugging techniquesUpper-Intermediate English levelBachelor’s degree in Computer Science or related fieldWILL BE A PLUSExperience with Playwright or other automated testing frameworksFamiliarity with CI/CD pipelines and DevOps practices Additional InformationPERSONAL PROFILEDetail-oriented developer with a passion for creating seamless user experiencesStrong problem-solving skills and ability to work in a collaborative environmentProactive in identifying performance improvements and UI enhancements By clicking the link above or any third-party link within this posting, you are leaving this site and going to a third-party website where the third-party website's terms and privacy policy applyI'm interestedI'm interestedI'm interestedRefer a friendshare this jobShare to WeChat×Copy the link and open WeChat to share.Copy to clipboardOpen WeChatShare to WeChat×Use Scan QR Code in WeChat and click ··· to share.